=== Generating (published_papers) ===
=== Generating (research_interests) ===
=== Generating (teaching_experience) ===
=== Generating (education) ===
=== Generating (research_experience) ===
=== Generating (misc) ===
=== Generating (research_projects) ===
=== Generating (books_etc) ===
=== Generating (awards) ===
=== Generating (association_memberships) ===
=== Generating (presentations) ===
==== begin registerFile(/WWW/pub2/data/ERD/person/10759/researchmap/published_papers.jsonl) ====
line:1, {"insert":{"user_id":"1000039003","type":"published_papers","id":"44178934"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=404184","label":"url"}],"paper_title":{"en":"Stabilization of laminars in chaos intermittency","ja":"Stabilization of laminars in chaos intermittency"},"authors":{"en":[{"name":"Katayama, Michiru"},{"name":"Ikeda Kenji"},{"name":"Ueta Tetsushi"}],"ja":[{"name":"片山 充二"},{"name":"池田 建司"},{"name":"上田 哲史"}]},"description":{"en":"Chaos intermittency is composed of a laminar regime, which exhibits almost periodic motion, and a burst regime, which exhibits chaotic motion; it is known that in chaos intermittency, switching between these regimes occurs irregularly. In the laminar regime of chaos intermittency, the periodic solution before the saddle node bifurcation is closely related to its generation, and its behavior becomes periodic in a short time; the laminar is not, however, a periodic solution, and there are no unstable periodic solutions nearby. Most chaos control methods cannot be applied to the problem of stabilizing a laminar response to a periodic solution since they refer to information about unstable periodic orbits. In this paper, we demonstrate a control method that can be applied to the control target that laminar phase of a dynamical system exhibiting chaos intermittency. This method records the time series of a periodic solution prior to the saddle node bifurcation as a pseudo-periodic orbit and feeds it to the control target back. We report that when this control method is applied to a circuit model, laminar motion can be stabilized to a periodic solution via control inputs of very small magnitude, and robust control can be obtained.","ja":"Chaos intermittency is composed of a laminar regime, which exhibits almost periodic motion, and a burst regime, which exhibits chaotic motion; it is known that in chaos intermittency, switching between these regimes occurs irregularly. In the laminar regime of chaos intermittency, the periodic solution before the saddle node bifurcation is closely related to its generation, and its behavior becomes periodic in a short time; the laminar is not, however, a periodic solution, and there are no unstable periodic solutions nearby. Most chaos control methods cannot be applied to the problem of stabilizing a laminar response to a periodic solution since they refer to information about unstable periodic orbits. In this paper, we demonstrate a control method that can be applied to the control target that laminar phase of a dynamical system exhibiting chaos intermittency. This method records the time series of a periodic solution prior to the saddle node bifurcation as a pseudo-periodic orbit and feeds it to the control target back. We report that when this control method is applied to a circuit model, laminar motion can be stabilized to a periodic solution via control inputs of very small magnitude, and robust control can be obtained."},"publication_date":"2024-02","publication_name":{"en":"International Journal of Bifurcation and Chaos","ja":"International Journal of Bifurcation and Chaos"},"volume":"Vol.34","number":"No.2","starting_page":"2450024-1","ending_page":"2450024-14","languages":["eng"],"referee":true,"invited":true,"identifiers":{"doi":["10.1142/S021812742450024X"],"issn":["0218-1274"]},"published_paper_type":"scientific_journal"},"priority":"input_data"}
line:2, {"insert":{"user_id":"1000039003","type":"published_papers","id":"30376365"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=338039","label":"url"}],"paper_title":{"en":"Investigation of effects of phosphor particles on optimal design of surface-mount-device light-emitting diode packaging using ray-tracing simulation","ja":"Investigation of effects of phosphor particles on optimal design of surface-mount-device light-emitting diode packaging using ray-tracing simulation"},"authors":{"en":[{"name":"Kashiwao Tomoaki"},{"name":"Hiura Mayu"},{"name":"Ikeda Kenji"},{"name":"Deguchi Mikio"},{"name":"Alireza Bahadori"}],"ja":[{"name":"Kashiwao Tomoaki"},{"name":"Hiura Mayu"},{"name":"池田 建司"},{"name":"Deguchi Mikio"},{"name":"Alireza Bahadori"}]},"description":{"en":"This study presents investigation of effects of phosphor particles on optimal structure and optical design of surfacemount-device (SMD) light-emitting diode (LED) packaging (PKG) using ray-tracing simulation. In the authors'previous study, effects of the reflection properties of the PKG resin and the lead-frame silver plating on the light extraction efficiency was investigated, and the optimisation method of the cavity angle composing the light reflector of the PKG was proposed. In this study, the optimal cavity angle and reflection properties under the condition of phosphor particles present in mould resin of the top-view PKG are investigated. In addition, the better conditions of the reflection properties under the conditions in which the phosphor is contained and not contained in the mould resin are confirmed. Finally, an optical design method of the SMD LED PKG with the mould resin containing a phosphor is proposed on the basis of the simulation results.","ja":"本研究は光線追跡法を用いて表面実装型LEDパッケージングの最適構造と光設計に与える蛍光粒子の影響について調査する．筆者らの以前の研究では，パッケージの樹脂とリードフレーム銀板の反射性能が光放射効率に与える影響について調査し，パッケージの反射板を構成する空洞角の最適設計を提案した．本研究では，上面パッケージのモールド樹脂に蛍光粒子が存在するという条件のもと，最適な空洞角と反射性能について調査する．さらに，蛍光体がモールド樹脂に含まれている場合と含まれていない場合について，より良い反射性能の条件を確認した．最後に，蛍光体を含むモールド樹脂をもつ表面実装LEDパッケージの光設計法をシミュレーション結果に基づいて提案する．"},"publication_date":"2018-04","publication_name":{"en":"IET Optoelectronics","ja":"IET Optoelectronics"},"volume":"Vol.12","number":"No.2","starting_page":"86","ending_page":"93","languages":["eng"],"referee":true,"identifiers":{"doi":["10.1049/iet-opt.2017.0051"],"issn":["1751-8768"]},"published_paper_type":"scientific_journal"},"priority":"input_data"}
line:3, {"insert":{"user_id":"1000039003","type":"published_papers","id":"30376366"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=331055","label":"url"}],"paper_title":{"en":"A neural network-based local rainfall prediction system using meteorological data on the Internet --- A case study using data from the Japan Meteorological Agency","ja":"A neural network-based local rainfall prediction system using meteorological data on the Internet --- A case study using data from the Japan Meteorological Agency"},"authors":{"en":[{"name":"Kashiwao Tomoaki"},{"name":"Nakayama Koichi"},{"name":"Ando Shin"},{"name":"Ikeda Kenji"},{"name":"Lee Moonyong"},{"name":"Bahadori Alireza"}],"ja":[{"name":"Kashiwao Tomoaki"},{"name":"Nakayama Koichi"},{"name":"Ando Shin"},{"name":"池田 建司"},{"name":"Lee Moonyong"},{"name":"Bahadori Alireza"}]},"description":{"en":"In this study, we develop and test a local rainfall (precipitation) prediction system based on arti cial neural networks (ANNs). Our system can automatically obtain meteorological data used for rainfall prediction from the Internet. Meteorological data from equipment installed at a local point is also shared among users in our system. The final goal of the study was the practical use of ``big data'' on the Internet as well as the sharing of data among users for accurate rainfall prediction. We predicted local rainfall in regions of Japan using data from the Japan Meteorological Agency (JMA). As neural network (NN) models for the system, we used a multi-layer perceptron (MLP) with a hybrid algorithm composed of back-propagation (BP) and random optimization (RO) methods, and radial basis function network (RBFN) with a least squares method (LSM), and compared the prediction performance of the two models. Precipitation (total amount of rainfall above 0.5 mm between 12:00 and 24:00 JST (Japan standard time))at Matsuyama, Sapporo, and Naha in 2012 was predicted by NNs using meteorological data for each city from 2011. The volume of precipitation was also predicted (total amount above 1.0 mm between 17:00 and 24:00 JST) at 16 points in Japan and compared with predictions by the JMA in order to verify the universality of the proposed system. The experimental results showed that precipitation in Japan can be predicted by the proposed method, and that the prediction performance of the MLP model was superior to that of the RBFN model for the rainfall prediction problem. However, the results were not better than those generated by the JMA. Finally, heavy rainfall (above 10 mm/h) in summer (Jun. Sep.) afternoons(12:00 24:00 JST) in Tokyo in 2011 and 2012 was predicted using data for Tokyo between 2000 and 2010.The results showed that the volume of precipitation could be accurately predicted and the caching rate of heavy rainfall was high. This suggests that the proposed system can predict unexpected local heavy rainfalls as ``guerrilla rainstorms.\"","ja":"本研究では，人口ニューラルネットワーク(ANN)に基づいて局地的な降雨(降水量)予測システムを構築し検証する．我々のシステムは降雨予測に用いられる気象データをインターネットから自動で取得する．我々のシステムでは，局所的な地点にインストールされた装置から得られる気象データはユーザーの間で共有される．本研究の最終的な目標は，インターネット上の\"ビッグデータ\"を活用することと，正確な降雨予測のためにユーザー間でデータを共有することである．我々は，日本の気象庁(JMA)のデータを用いて日本のいくつかの地域の降雨量を予測した．ニューラルネットワークモデルとしてバックプロパゲーションとランダム最適化からなるハイブリッドアルゴリズムを用いた多層パーセプトロン(MLP)と最小二乗法を用いたRBFN (radial basis function network)を用い，これら二つのモデルの予測性能を比較した．松山，札幌，那覇の2012年の降水量を2011年の各市の気象データに基づきニューラルネットワークにより予測した．提案手法の一般性を検証するために日本の16地点での降水量も予測し，JMAの予測と比較した．実験により日本における降水量は提案手法により予測可能であること，RBFNモデルよりもMLPモデルの方が予測性能が良いことがわかった．しかしながら，予測性能はJMAのものよりも良くはなかった．最後に東京における2011年と2012年の夏の大雨を2000年∼2010年のデータをもとに推定した．大雨の降水量は精度よく予測された．これより提案手法は不意なゲリラ豪雨を予測できるのではないかと期待される．"},"publication_date":"2017-03-15","publication_name":{"en":"Applied Soft Computing","ja":"Applied Soft Computing"},"volume":"Vol.56","starting_page":"317","ending_page":"330","languages":["eng"],"referee":true,"identifiers":{"doi":["10.1016/j.asoc.2017.03.015"],"issn":["1568-4946"]},"published_paper_type":"scientific_journal"},"priority":"input_data"}
line:4, {"insert":{"user_id":"1000039003","type":"published_papers","id":"30376367"},"force":{"see_also":[{"@id":"https://repo.lib.tokushima-u.ac.jp/ja/115676","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=317126","label":"url"}],"paper_title":{"en":"Optimization of surface-mount-device light-emitting diode packaging --- investigation of effects of component optical properties on light extraction efficiency","ja":"Optimization of surface-mount-device light-emitting diode packaging --- investigation of effects of component optical properties on light extraction efficiency"},"authors":{"en":[{"name":"Kashiwao Tomoaki"},{"name":"Hiura Mayu"},{"name":"Lim Yee Yan"},{"name":"Bahadori Alireza"},{"name":"Ikeda Kenji"},{"name":"Deguchi Mikio"}],"ja":[{"name":"柏尾 知明"},{"name":"樋浦 真悠"},{"name":"Lim Yee Yan"},{"name":"Bahadori Alireza"},{"name":"池田 建司"},{"name":"出口 幹雄"}]},"description":{"en":"An investigation of the effects of the optical properties of surface-mount-device (SMD) light-emitting diode (LED) (side-view and top-view LEDs) packaging (PKG) components on the light extraction efficiency ηPKG using ray-tracing simulations is presented. In particular, it is found that the optical properties of the PKG resin and the lead-frame (L/F) silver-plating significantly affect ηPKG. Thus, the effects of the surface reflection methods of these components are investigated in order to optimize the optical design of the LED PKG. It is shown that there exists peak extraction efficiency for each PKG, and the cavity angle formed by the cavity wall is important to the optical design. In addition, the effect of phosphor present in the mold resin is examined using a Mie scattering simulation. Finally, an SMD LED PKG optical design method is proposed on the basis of the simulation results.","ja":"レイトレーシング法を用いた表面実装LEDパッケージングの成分の光特性が光放射効率に与える影響を調査する．特に，パッケージの樹脂とリードフレームの銀板の光特性が光放射効率に大きく影響することがわかった．よって，LEDパッケージの光特性を最適化するため，これらの成分の表面反射の影響を調査する．各パッケージングには放射効率のピークが存在し，空洞の壁が作る空洞角が光設計に重要であることが示される．さらに，モールド樹脂に存在する蛍光体の影響もミー散乱シミュレーションを用いて検査する．最後に表面実装LEDパッケージングの光設計手法をシミュレーション結果に基づいて提案する．"},"publication_date":"2016-02","publication_name":{"en":"Optical Engineering","ja":"Optical Engineering"},"volume":"Vol.55","number":"No.2","starting_page":"025101-1","ending_page":"025101-11","languages":["eng"],"referee":true,"identifiers":{"doi":["10.1117/1.OE.55.2.025101"],"issn":["0091-3286"]},"published_paper_type":"scientific_journal"},"priority":"input_data"}
line:5, {"insert":{"user_id":"1000039003","type":"published_papers","id":"30376368"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=282243","label":"url"}],"paper_title":{"en":"Distribution and Sharing of E-Learning Courseware by Weighted Keywords","ja":"Distribution and Sharing of E-Learning Courseware by Weighted Keywords"},"authors":{"en":[{"name":"Shimomura Takao"},{"name":"Ikeda Kenji"},{"name":"Adriano Montanaro"}],"ja":[{"name":"下村 隆夫"},{"name":"池田 建司"},{"name":"Adriano Montanaro"}]},"description":{"en":"Web-based training is popular around the world, where a large number of people can study at the same time through the Internet anytime and anywhere. The major issue of current e-learning is courseware distribution between different platforms. SCORM (sharable content object reference model) is one of the solutions for courseware sharing. However, to make SCORM-conformable courseware, some knowledge about HTML and JavaScript is required. We have developed a SWF (Sharable Web Fragment)-based e-learning system, where courseware is created with sharable Web fragments such as Web pages, images and other resources, and the courseware can be distributed to another platform by export and import facilities. The exported meta-information is architecture-independent and provides a model of courseware distribution. This paper presents how to promote the distribution and sharing of Web-based e-learning courseware, where courseware can be easily retrieved by weighted keywords.","ja":"Web-based training is popular around the world, where a large number of people can study at the same time through the Internet anytime and anywhere. The major issue of current e-learning is courseware distribution between different platforms. SCORM (sharable content object reference model) is one of the solutions for courseware sharing. However, to make SCORM-conformable courseware, some knowledge about HTML and JavaScript is required. We have developed a SWF (Sharable Web Fragment)-based e-learning system, where courseware is created with sharable Web fragments such as Web pages, images and other resources, and the courseware can be distributed to another platform by export and import facilities. The exported meta-information is architecture-independent and provides a model of courseware distribution. This paper presents how to promote the distribution and sharing of Web-based e-learning courseware, where courseware can be easily retrieved by weighted keywords."},"publication_date":"2014-08","publication_name":{"en":"International Journal of Information and Education Technology (IJIET)","ja":"International Journal of Information and Education Technology (IJIET)"},"volume":"Vol.5","number":"No.9","starting_page":"698","ending_page":"703","languages":["eng"],"referee":true,"identifiers":{"doi":["10.7763/IJIET.2015.V5.595"],"issn":["2010-3689"]},"published_paper_type":"scientific_journal"},"priority":"input_data"}
line:6, {"insert":{"user_id":"1000039003","type":"published_papers","id":"30376369"},"force":{"see_also":[{"@id":"https://www.scopus.com/record/display.url?eid=2-s2.0-84958530569&origin=inward","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=274182","label":"url"}],"paper_title":{"en":"Two Types of Deadlock Detection: Cyclic and Acyclic","ja":"Two Types of Deadlock Detection: Cyclic and Acyclic"},"authors":{"en":[{"name":"Shimomura Takao"},{"name":"Ikeda Kenji"}],"ja":[{"name":"下村 隆夫"},{"name":"池田 建司"}]},"description":{"en":"Concurrent programs are difficult to test and debug due to their non-deterministic execution. For deadlocks, traditional deadlock detection algorithms depend on finding cycles in lock graphs created from application programs. This paper first introduces three kinds of blocked relations, lock-blocked, wait-blocked, and join-blocked for Java multi-threaded programs. Previous work does not consider the wait-blocked relations, nor the influence of thread interruption. The paper then proposes two types of deadlocks based on these blocked relations, that is, block-cycle type deadlocks and waiting-block type deadlocks which are acyclic. It also presents an example of implementation to detect these types of deadlocks, and addresses future directions.","ja":"Concurrent programs are difficult to test and debug due to their non-deterministic execution. For deadlocks, traditional deadlock detection algorithms depend on finding cycles in lock graphs created from application programs. This paper first introduces three kinds of blocked relations, lock-blocked, wait-blocked, and join-blocked for Java multi-threaded programs. Previous work does not consider the wait-blocked relations, nor the influence of thread interruption. The paper then proposes two types of deadlocks based on these blocked relations, that is, block-cycle type deadlocks and waiting-block type deadlocks which are acyclic. It also presents an example of implementation to detect these types of deadlocks, and addresses future directions."},"publication_date":"2014-01-08","publication_name":{"en":"Intelligent Systems for Science and Information, Studies in Computational Intelligence","ja":"Intelligent Systems for Science and Information, Studies in Computational Intelligence"},"volume":"Vol.542","starting_page":"233","ending_page":"259","languages":["eng"],"referee":true,"identifiers":{"doi":["10.1007/978-3-319-04702-7_14"]},"published_paper_type":"scientific_journal"},"priority":"input_data"}
line:7, {"insert":{"user_id":"1000039003","type":"published_papers","id":"30376370"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=283466","label":"url"}],"paper_title":{"en":"Estimation of Transition Times of a Hopping Machine Based on Wavelet Analysis","ja":"Estimation of Transition Times of a Hopping Machine Based on Wavelet Analysis"},"authors":{"en":[{"name":"Kashiwao Tomoaki"},{"name":"Ikeda Kenji"},{"name":"Shimomura Takao"}],"ja":[{"name":"柏尾 知明"},{"name":"池田 建司"},{"name":"下村 隆夫"}]},"description":{"en":"The transition time of a hopping machine (HM) as a piecewise linear (PWL) system is estimated by using a wavelet analysis method proposed in previous papers. The HM is a nonlinear system because its equation of motion has a nonlinear drag coefficient term owing to air resistance. The effectiveness of the proposed method for real (nonlinear) systems is verified through instrumental experiments performed on the HM. First, the effect of nonlinearity on the estimation of a transition time is examined. The HM has a discrete transition caused by the nonlinearity in a real system. In addition, two types of discrete transitions are detected from the output data: one caused by the change between discrete free-fall and spring-mass states and the other caused by inversion of the sign of the nonlinear term owing to a change in the velocity of the mass. These transition times are estimated using the proposed method. Finally, the proposed method is compared with a conventional method based on a clustering technique.","ja":"ホッピングマシンを区分線系システムとしてとらえ，その離散状態の遷移時刻を 先に提案したWavelet解析に基づく手法で推定した．実機によるデータから，2種類の離散状態の遷移を推定することができた．1つは，自由落下とバネ・マス・ダンパ系の切り替えであり，もう1つは自由落下時の頂点における速度の向きの変化による空気抵抗の向きの変化である．最後に従来手法であるクラスタリングを用いる手法との比較を行った．"},"publication_date":"2013-11","publication_name":{"en":"SICE Journal of Control, Measurement, and System Integration","ja":"SICE Journal of Control, Measurement, and System Integration"},"volume":"Vol.6","number":"No.6","starting_page":"396","ending_page":"402","languages":["eng"],"referee":true,"identifiers":{"doi":["10.9746/jcmsi.6.396"],"issn":["1884-9970"]},"published_paper_type":"scientific_journal"},"priority":"input_data"}
line:8, {"insert":{"user_id":"1000039003","type":"published_papers","id":"30376371"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=246846","label":"url"}],"paper_title":{"en":"BCLS Method for Stationary Systems in Closed Loop Environment","ja":"BCLS Method for Stationary Systems in Closed Loop Environment"},"authors":{"en":[{"name":"Ikeda Kenji"},{"name":"Mogami Yoshio"},{"name":"Shimomura Takao"}],"ja":[{"name":"池田 建司"},{"name":"最上 義夫"},{"name":"下村 隆夫"}]},"description":{"en":"This paper proposes a bias-compensated least squares (BCLS) method in closed loop environment when the noise is assumed to be stationary. The feedback controller is assumed to be linear time invariant discrete-time system and the feedback system is assumed to be asymptotically stable. The convergence of the proposed algorithm is analyzed and it is shown that a kind of persistent excitation (PE) condition on the reference input is required.","ja":"本論文は，定常雑音の仮定の下，閉ループ環境におけるバイアス補償型最小二乗法を提案する．フィードバック補償器は線形時不変な離散時間系であり，フィードバック系は漸近安定と仮定する．提案手法の収束性を解析し，参照入力のPE(persistent excitation)条件が必要であることを示す．"},"publication_date":"2012-03","publication_name":{"en":"SICE Journal of Control, Measurement, and System Integration","ja":"SICE Journal of Control, Measurement, and System Integration"},"volume":"Vol.5","number":"No.2","starting_page":"78","ending_page":"84","languages":["eng"],"referee":true,"identifiers":{"doi":["10.9746/jcmsi.5.78"],"issn":["1884-9970"]},"published_paper_type":"scientific_journal"},"priority":"input_data"}
line:9, {"insert":{"user_id":"1000039003","type":"published_papers","id":"30376372"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=228426","label":"url"}],"paper_title":{"en":"Functional Web Component Generation for Visual Web Application Programming","ja":"Functional Web Component Generation for Visual Web Application Programming"},"authors":{"en":[{"name":"Shimomura Takao"},{"name":"Ikeda Kenji"},{"name":"Muneo Takahashi"}],"ja":[{"name":"下村 隆夫"},{"name":"池田 建司"},{"name":"Muneo Takahashi"}]},"publication_date":"2011-05","publication_name":{"en":"International Journal of Computers and Applications","ja":"International Journal of Computers and Applications"},"volume":"Vol.33","number":"No.2","starting_page":"167","ending_page":"174","languages":["eng"],"referee":true,"identifiers":{"doi":["10.2316/Journal.202.2011.2.202-2730"],"issn":["1206-212X"]},"published_paper_type":"scientific_journal"},"priority":"input_data"}
line:10, {"insert":{"user_id":"1000039003","type":"published_papers","id":"30376373"},"force":{"see_also":[{"@id":"https://ci.nii.ac.jp/naid/10031140023/","label":"url"},{"@id":"https://cir.nii.ac.jp/crid/1573105975976153216/","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=240396","label":"url"}],"paper_title":{"en":"Estimation of Continuous-Time Nonlinear Systems by Using the Unscented Kalman Filter","ja":"Estimation of Continuous-Time Nonlinear Systems by Using the Unscented Kalman Filter"},"authors":{"en":[{"name":"Zheng Min"},{"name":"Ikeda Kenji"},{"name":"Shimomura Takao"}],"ja":[{"name":"Zheng Min"},{"name":"池田 建司"},{"name":"下村 隆夫"}]},"description":{"en":"This paper proposes a continuous-time model estimation method by using the Unscented Kalman Filter (UKF) from sampled I/O data, in which plant parameters as well as the initial state are estimated. The initial state is estimated based on a backward system of the plant, and the parameters are estimated by using an iterated UKF, which repeats the estimation of the forward system and the backward system alternately. In order to demonstrate the effectiveness of the proposed method, a rotary pendulum is considered to estimate the parameters of a continuous-time nonlinear system.","ja":"本論文は，UKF(Unscented Kalman Filter)を用いてサンプル値データから連続時間モデルを推定する手法を提案する．提案手法では，対象のパラメータと初期状態も同時に推定される．初期状態は対象のバックワードシステムを用いて推定され，パラメータはフォワードシステムとバックワードシステムの推定を交互に繰り返す繰り返し型のUKFにより推定される．提案手法の有効性を示すため回転型振子のパラメータ推定を行う．"},"publication_date":"2010-09-30","publication_name":{"en":"SICE Journal of Control, Measurement, and System Integration","ja":"SICE Journal of Control, Measurement, and System Integration"},"volume":"Vol.3","number":"No.5","starting_page":"324","ending_page":"329","languages":["eng"],"referee":true,"identifiers":{"doi":["10.9746/jcmsi.3.324"],"issn":["1882-4889"]},"published_paper_type":"scientific_journal"},"priority":"input_data"}
line:11, {"insert":{"user_id":"1000039003","type":"published_papers","id":"30376374"},"force":{"see_also":[{"@id":"http://ci.nii.ac.jp/naid/10025090303/","label":"url"},{"@id":"https://cir.nii.ac.jp/crid/1390001204504071424/","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=194093","label":"url"}],"paper_title":{"en":"Estimation of the transition time of piecewise linear systems by using wavelet analysis","ja":"ウェーブレット解析を用いた区分的線形システムのトランジションタイムの推定"},"authors":{"en":[{"name":"Kashiwao Tomoaki"},{"name":"Ikeda Kenji"},{"name":"Shimomura Takao"}],"ja":[{"name":"柏尾 知明"},{"name":"池田 建司"},{"name":"下村 隆夫"}]},"description":{"en":"This paper proposes an estimation method of the transition time of hybrid systems in piecewise linear (PWL) form by using wavelet analysis. If each transition time is known, the continuous dynamics between adjacent discrete transitions will be identified by conventional identification method for continuous systems. The discrete transition is represented as a switching of differential equations or a jump of continous states. These changes can be detected as characteristic patterns in wavelet transform of an output signal. First, detectability of the discrete transition is defined and its necessary and sufficient condition is derived. Under the assumption of the detectability of th ediscrete transition, an output signal is represented by using Taylor expansion around the transition time. In addition, the characteristic patterns in the wavelet transform of an output signal are analyzed. An estimation method of the transition time based on the analyzed pattern is proposed. Finally, the effectiveness of the proposed method is illustrated by numerical examples.","ja":"ウェーブレット解析を用いた，区分線系システムにおける離散状態の遷移時刻の推定方法を提案した．離散状態の遷移の可検出性を定義し，その必要十分条件を与えた．また，対象が可検出の場合，遷移時刻における出力のテイラー展開を解析し，その特徴をウェーブレット解析によってとらえる手法を提案した．"},"publication_date":"2009-07","publication_name":{"en":"Transactions of the Society of Instrument and Control Engineers","ja":"計測自動制御学会論文集"},"volume":"Vol.45","number":"No.7","starting_page":"349","ending_page":"355","languages":["jpn"],"referee":true,"identifiers":{"doi":["10.9746/sicetr.45.349"],"issn":["0453-4654"]},"published_paper_type":"scientific_journal"},"priority":"input_data"}
line:12, {"insert":{"user_id":"1000039003","type":"published_papers","id":"30376375"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=187394","label":"url"}],"paper_title":{"en":"Bias Compensation of Recursive Least Squares Estimate in Closed Loop Environment","ja":"Bias Compensation of Recursive Least Squares Estimate in Closed Loop Environment"},"authors":{"en":[{"name":"Ikeda Kenji"},{"name":"Mogami Yoshio"},{"name":"Shimomura Takao"}],"ja":[{"name":"池田 建司"},{"name":"最上 義夫"},{"name":"下村 隆夫"}]},"description":{"en":"In this paper, an asymptotic bias of the recursive least squares (RLS) estimate in the closed loop environment is analyzed and its compensation method is proposed under the assumption that the noise is white. Namely, a bias compensated RLS method in the closed loop environment based on output error (OE) model is proposed. A posteriori error is also analyzed for the estimation of the noise variance.","ja":"本論文は，雑音は白色雑音であるという仮定のもと，閉ループ環境における逐次最小二乗法(RLS)の漸近バイアスを解析し，それを補償する手法を提案する．すなわち出力誤差(OE)モデルに基づく閉ループ環境のバイアス補償型逐次最小二乗法を提案する．雑音分散の推定のため，事後誤差についても解析する．"},"publication_date":"2008-09","publication_name":{"en":"SICE Journal of Control, Measurement, and System Integration","ja":"SICE Journal of Control, Measurement, and System Integration"},"volume":"Vol.1","number":"No.5","starting_page":"400","ending_page":"405","languages":["eng"],"referee":true,"identifiers":{"doi":["10.9746/jcmsi.1.400"],"issn":["1882-4889"]},"published_paper_type":"scientific_journal"},"priority":"input_data"}
line:13, {"insert":{"user_id":"1000039003","type":"published_papers","id":"30376376"},"force":{"see_also":[{"@id":"https://www.scopus.com/record/display.url?eid=2-s2.0-42149099519&origin=inward","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=172585","label":"url"}],"paper_title":{"en":"Context-Dependent Extensible Syntax-Oriented Verifier with Recursive Verification","ja":"Context-Dependent Extensible Syntax-Oriented Verifier with Recursive Verification"},"authors":{"en":[{"name":"Shimomura Takao"},{"name":"Nhor Sok Lang"},{"name":"Quan Liang Chen"},{"name":"Ikeda Kenji"}],"ja":[{"name":"下村 隆夫"},{"name":"Nhor Sok Lang"},{"name":"Quan Liang Chen"},{"name":"池田 建司"}]},"publication_date":"2008-02","publication_name":{"en":"WSEAS Transactions on Information Science and Applications","ja":"WSEAS Transactions on Information Science and Applications"},"volume":"Vol.5","number":"No.2","starting_page":"44","ending_page":"53","languages":["eng"],"referee":true,"identifiers":{"issn":["1790-0832"]},"published_paper_type":"scientific_journal"},"priority":"input_data"}
line:14, {"insert":{"user_id":"1000039003","type":"published_papers","id":"30376377"},"force":{"see_also":[{"@id":"http://ci.nii.ac.jp/naid/10020028442/","label":"url"},{"@id":"https://cir.nii.ac.jp/crid/1520853832639592448/","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=173422","label":"url"}],"paper_title":{"en":"Bias-compensated Least Squares Method in Closed Loop Environment","ja":"閉ループ環境におけるバイアス補償型最小二乗法"},"authors":{"en":[{"name":"Ikeda Kenji"},{"name":"Mogami Yoshio"},{"name":"Shimomura Takao"}],"ja":[{"name":"池田 建司"},{"name":"最上 義夫"},{"name":"下村 隆夫"}]},"description":{"en":"In this paper, a bias-compensated least squares method in the closed loop environment is proposed. It is assumed that the observation noise is a white gaussian signal while there are no process noises. It is also assumed that the plant is controlled by a linear time invariant controller and that the closed loop system is asymptotically stable. It is shown that the asymptotic bias of the least squares estimate in the closed loop environment is represented as a difference between the parameter of the prefilter and that of an \"optimal prefilter\" and that the proposed bias-compensated least squares estimate is consistent.","ja":"本論文では閉ループ環境におけるバイアス補償型部分空間同定法を提案している．プロセス雑音はなく観測雑音はガウス性白色雑音と仮定している．また同定対象は線形時不変な補償器で制御されており，閉ループ系は漸近安定であると仮定する．閉ループ環境における最小二乗推定量の漸近バイアスは，プレフィルタのパラメータと\"最適なプレフィルタ \"のパラメータとの差としてあらわされることが示された．また，提案手法は一致推定量であることが示された．"},"publication_date":"2007-12","publication_name":{"en":"Transactions of the Society of Instrument and Control Engineers","ja":"計測自動制御学会論文集"},"volume":"Vol.43","number":"No.12","starting_page":"1097","ending_page":"1102","languages":["jpn"],"referee":true,"identifiers":{"issn":["0453-4654"]},"published_paper_type":"scientific_journal"},"priority":"input_data"}
line:15, {"insert":{"user_id":"1000039003","type":"published_papers","id":"30376378"},"force":{"see_also":[{"@id":"https://www.scopus.com/record/display.url?eid=2-s2.0-41149166085&origin=inward","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=173384","label":"url"}],"paper_title":{"en":"Web-based Laboratory Network Management System that Integrates Multiple Servers","ja":"Web-based Laboratory Network Management System that Integrates Multiple Servers"},"authors":{"en":[{"name":"Shimomura Takao"},{"name":"Quan Liang Chen"},{"name":"Nhor Sok Lang"},{"name":"Ikeda Kenji"}],"ja":[{"name":"下村 隆夫"},{"name":"Quan Liang Chen"},{"name":"Nhor Sok Lang"},{"name":"池田 建司"}]},"publication_date":"2007-12","publication_name":{"en":"WSEAS Transactions on Information Science and Applications","ja":"WSEAS Transactions on Information Science and Applications"},"volume":"Vol.4","number":"No.12","starting_page":"1422","ending_page":"1430","languages":["eng"],"referee":true,"identifiers":{"issn":["1790-0832"]},"published_paper_type":"scientific_journal"},"priority":"input_data"}
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line:19, {"insert":{"user_id":"1000039003","type":"published_papers","id":"30376382"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=173125","label":"url"}],"paper_title":{"en":"Easy enjoyable effective automated practice and test system","ja":"Easy enjoyable effective automated practice and test system"},"authors":{"en":[{"name":"Shimomura Takao"},{"name":"Muneo Takahashi"},{"name":"Quan Liang Chen"},{"name":"Nhor Sok Lang"},{"name":"Ikeda Kenji"}],"ja":[{"name":"下村 隆夫"},{"name":"Muneo Takahashi"},{"name":"Quan Liang Chen"},{"name":"Nhor Sok Lang"},{"name":"池田 建司"}]},"publication_date":"2007","publication_name":{"en":"INTERNATIONAL JOURNAL of EDUCATION AND INFORMATION TECHNOLOGIES","ja":"INTERNATIONAL JOURNAL of EDUCATION AND INFORMATION TECHNOLOGIES"},"volume":"Vol.1","number":"No.1","starting_page":"1","ending_page":"7","languages":["eng"],"referee":true,"published_paper_type":"scientific_journal"},"priority":"input_data"}
line:20, {"insert":{"user_id":"1000039003","type":"published_papers","id":"30376383"},"force":{"see_also":[{"@id":"http://ci.nii.ac.jp/naid/10013391164/","label":"url"},{"@id":"https://cir.nii.ac.jp/crid/1390001205164812928/","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=115743","label":"url"}],"paper_title":{"en":"Design of Robust I-PD Controller by Using Pareto-Optimality","ja":"パレート最適性を考慮したロバストI-PD制御系設計法"},"authors":{"en":[{"name":"Tagami Takanori"},{"name":"Ikeda Kenji"},{"name":"Kawabe Tohru"}],"ja":[{"name":"田上 隆徳"},{"name":"池田 建司"},{"name":"河辺 徹"}]},"description":{"en":"先の論文では, 速応性と振動抑制性の2目的最適化問題を, 閉ループ系の極の実部の最大値の最小化, および, 原点から見た虚軸からの角度の最大値の最小化という2つの最小化問題に置き換えて, 2目的問題を解いた. 一方, 筆者の一人は出力誤差の2乗積分の最小化, および, 出力誤差の微分値の2乗積分の最小化という最適化問題を解く方法を提案している. そこで, 本論文では, 二つの手法の特徴を実際の磁気浮上系を例題にとり, 比較·検討した.","ja":"先の論文では, 速応性と振動抑制性の2目的最適化問題を, 閉ループ系の極の実部の最大値の最小化, および, 原点から見た虚軸からの角度の最大値の最小化という2つの最小化問題に置き換えて, 2目的問題を解いた. 一方, 筆者の一人は出力誤差の2乗積分の最小化, および, 出力誤差の微分値の2乗積分の最小化という最適化問題を解く方法を提案している. そこで, 本論文では, 二つの手法の特徴を実際の磁気浮上系を例題にとり, 比較·検討した."},"publication_date":"2004-09-15","publication_name":{"en":"Transactions of the Institute of Systems, Control and Information Engineers","ja":"システム制御情報学会論文誌"},"volume":"Vol.17","number":"No.9","starting_page":"363","ending_page":"370","languages":["jpn"],"referee":true,"identifiers":{"doi":["10.5687/iscie.17.363"],"issn":["1342-5668"]},"published_paper_type":"scientific_journal"},"priority":"input_data"}
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line:24, {"insert":{"user_id":"1000039003","type":"published_papers","id":"30376387"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=70680","label":"url"}],"paper_title":{"en":"Web application generator by image-oriented design","ja":"Web application generator by image-oriented design"},"authors":{"en":[{"name":"Shimomura Takao"},{"name":"Takahashi Muneo"},{"name":"Ikeda Kenji"},{"name":"Mogami Yoshio"}],"ja":[{"name":"下村 隆夫"},{"name":"Takahashi Muneo"},{"name":"池田 建司"},{"name":"最上 義夫"}]},"description":{"en":"Webアプリケーションの開発において，開発者が頭の中で描いたイメージに従ってソフトウェアを開発することを可能とする，グラフィックスを用いたイメージ指向プログラミング技法を提案する．本論分では，ビジュアルなWebコンポーネントやWebページの遷移に基づいて実行されるビジネスロジックを組み合わせて，Webアプリケーションプログラムを合成するためのアプリケーション自動生成方式について述べる．","ja":"Webアプリケーションの開発において，開発者が頭の中で描いたイメージに従ってソフトウェアを開発することを可能とする，グラフィックスを用いたイメージ指向プログラミング技法を提案する．本論分では，ビジュアルなWebコンポーネントやWebページの遷移に基づいて実行されるビジネスロジックを組み合わせて，Webアプリケーションプログラムを合成するためのアプリケーション自動生成方式について述べる．"},"publication_date":"2003-03","publication_name":{"en":"ACM SIGSOFT Software Engineering Notes","ja":"ACM SIGSOFT Software Engineering Notes"},"volume":"Vol.28","number":"No.2","starting_page":"14","ending_page":"19","languages":["eng"],"referee":true,"identifiers":{"issn":["0163-5948"]},"published_paper_type":"scientific_journal"},"priority":"input_data"}
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line:5, {"insert":{"user_id":"1000039003","type":"misc","id":"12908843"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=17569","label":"url"}],"paper_title":{"en":"Adaptive control using logic-based switching","ja":"切り替え型適応制御"},"authors":{"en":[{"name":"Ikeda Kenji"}],"ja":[{"name":"池田 建司"}]},"description":{"en":"従来のパラメータ適応制御の問題点である, 事前情報に関する制約を緩和すべく, 切り替え型の適応制御が提案されている. この分野の第一人者である A. S. Morse教授の解説記事に基づき, pre-routed switching, hysteresis switching, dwell-time switching などの手法の説明や安定性の原理について解説した.","ja":"従来のパラメータ適応制御の問題点である, 事前情報に関する制約を緩和すべく, 切り替え型の適応制御が提案されている. この分野の第一人者である A. S. Morse教授の解説記事に基づき, pre-routed switching, hysteresis switching, dwell-time switching などの手法の説明や安定性の原理について解説した."},"publication_date":"1999-03-01","publication_name":{"en":"Journal of the Society of Instrument and Control Engineers","ja":"計測と制御"},"volume":"Vol.38","number":"No.3","starting_page":"182","ending_page":"188","languages":["jpn"],"identifiers":{"issn":["0453-4662"]},"misc_type":"introduction_scientific_journal"},"priority":"input_data"}
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line:7, {"insert":{"user_id":"1000039003","type":"misc","id":"12908849"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=117728","label":"url"}],"paper_title":{"en":"A design of MRACS for linear plants with unknown relative degrees","ja":"相対次数に依存しない連続時間MRACSの構成"},"authors":{"en":[{"name":"Ikeda Kenji"},{"name":"Toshiyuki Kitamori"}],"ja":[{"name":"池田 建司"},{"name":"北森 俊行"}]},"description":{"en":"制御対象の相対次数は入力から出力までの位相遅れの最大値を表す指標である. モデル規範型適応制御においてパラメータ調整を行う場合, 入力から出力までの位相遅れを補正して, 線形部を正実化しなければ安定性を保証することができない. 拡張誤差信号を用いる手法に代表される正実化手法は, 基本的には制御対象の相対次数という事前情報が必要であった. 本論文では, その制約を緩和して, 相対次数の上限がわかっているという仮定の下, モデル規範型適応制御系の提案と, パラメータの有界性と出力誤差の0への収束性を示した.","ja":"制御対象の相対次数は入力から出力までの位相遅れの最大値を表す指標である. モデル規範型適応制御においてパラメータ調整を行う場合, 入力から出力までの位相遅れを補正して, 線形部を正実化しなければ安定性を保証することができない. 拡張誤差信号を用いる手法に代表される正実化手法は, 基本的には制御対象の相対次数という事前情報が必要であった. 本論文では, その制約を緩和して, 相対次数の上限がわかっているという仮定の下, モデル規範型適応制御系の提案と, パラメータの有界性と出力誤差の0への収束性を示した."},"publication_date":"1991-01","publication_name":{"en":"Transactions of the Society of Instrument and Control Engineers","ja":"計測自動制御学会論文集"},"volume":"Vol.27","number":"No.1","starting_page":"49","ending_page":"55","languages":["jpn"],"referee":true,"identifiers":{"issn":["0453-4654"]}},"priority":"input_data"}
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line:1, {"insert":{"user_id":"1000039003","type":"presentations","id":"43866782"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=403597","label":"url"}],"presentation_title":{"en":"Laminar stabilization control in chaos intermittency","ja":"Laminar stabilization control in chaos intermittency"},"presenters":{"en":[{"name":"Katayama, Michiru"},{"name":"Ikeda Kenji"},{"name":"Ueta Tetsushi"}],"ja":[{"name":"片山 充二"},{"name":"池田 建司"},{"name":"上田 哲史"}]},"event":{"en":"Proc. NOLTA2023","ja":"Proc. NOLTA2023"},"publication_date":"2023-09-26","languages":["eng"],"promoter":{"en":"Institute of Electronics, Information and Communication Engineers","ja":"Institute of Electronics, Information and Communication Engineers"},"location":{"en":"Catania","ja":"Catania"},"description":{"en":"Intermittency gives the irregular switching of almost periodic (laminar) and chaotic (burst) motions, and can be confirmed in every physical system within a certain parameter range. In this paper, by utilizing a method stabilizing a periodic motion which have been vanished by a saddle node bifurcation, a laminar motion in the intermittency is stabilized by a tiny control input. Apseudo periodic orbit composed by the vanished orbit or laminar motion is applied as a reference for the linear feedback control. We demonstrate the control for a circuit model and show robust stabilization responses.","ja":"Intermittency gives the irregular switching of almost periodic (laminar) and chaotic (burst) motions, and can be confirmed in every physical system within a certain parameter range. In this paper, by utilizing a method stabilizing a periodic motion which have been vanished by a saddle node bifurcation, a laminar motion in the intermittency is stabilized by a tiny control input. Apseudo periodic orbit composed by the vanished orbit or laminar motion is applied as a reference for the linear feedback control. We demonstrate the control for a circuit model and show robust stabilization responses."},"is_international_presentation":true},"priority":"input_data"}
line:2, {"insert":{"user_id":"1000039003","type":"presentations","id":"43070560"},"force":{"see_also":[{"@id":"https://www.scopus.com/record/display.url?eid=2-s2.0-85144594809&origin=inward","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=400350","label":"url"}],"presentation_title":{"en":"Numerical Analysis of the Estimate of Noise Covariance by using Best Linear Unbiased Estimate","ja":"Numerical Analysis of the Estimate of Noise Covariance by using Best Linear Unbiased Estimate"},"presenters":{"en":[{"name":"Ikeda Kenji"},{"name":"Tanaka HIdeyuki"}],"ja":[{"name":"池田 建司"},{"name":"田中 秀幸"}]},"event":{"en":"2022 IEEE Conference on Control Technology and Applications","ja":"2022 IEEE Conference on Control Technology and Applications"},"publication_date":"2022-08-23","languages":["eng"],"promoter":{"en":"IEEE","ja":"IEEE"},"location":{"en":"Trieste","ja":"Trieste"},"description":{"en":"This paper derives a BLUE (best linear unbiased estimate) for the estimation of noise covariance matrix in the framework of subspace identification. An estimation method of the noise covariance with a CCA (canonical correlation analysis) weighting matrix was previously proposed by the authors. The newly derived BLUE is compared with the previously proposed method numerically and it is shown that the previously proposed method gives a good performance.","ja":"This paper derives a BLUE (best linear unbiased estimate) for the estimation of noise covariance matrix in the framework of subspace identification. An estimation method of the noise covariance with a CCA (canonical correlation analysis) weighting matrix was previously proposed by the authors. The newly derived BLUE is compared with the previously proposed method numerically and it is shown that the previously proposed method gives a good performance."},"is_international_presentation":true},"priority":"input_data"}
line:3, {"insert":{"user_id":"1000039003","type":"presentations","id":"38690548"},"force":{"see_also":[{"@id":"https://www.scopus.com/record/display.url?eid=2-s2.0-85118103938&origin=inward","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=386346","label":"url"}],"presentation_title":{"en":"An Introduction of a CCA Weighting Matrix to a Closed-Loop Subspace Identification Method","ja":"An Introduction of a CCA Weighting Matrix to a Closed-Loop Subspace Identification Method"},"presenters":{"en":[{"name":"Ikeda Kenji"},{"name":"Tanaka Hideyuki"}],"ja":[{"name":"池田 建司"},{"name":"田中 秀幸"}]},"event":{"en":"Preprints of the 19th IFAC Symposium on System Identification","ja":"Preprints of the 19th IFAC Symposium on System Identification"},"publication_date":"2021-07-16","languages":["eng"],"location":{"en":"(Virtual) Padova","ja":"(Virtual) Padova"},"description":{"en":"This paper introduces a CCA (canonical correlation analysis) weighting matrix to an estimation method of the innovations model previously proposed by the authors. A numerical simulation illustrates that the CCA weighting reduces the covariance of the estimate and that the proposed method gives similar or better performance compared to Closed-Loop MOESP and PBSID. Especially, the design parameter called \"past horizon\" in the proposed method can be set small compared to Closed-Loop MOESP and PBSID. It is also analyzed how the bias of the estimate is reduced.","ja":"This paper introduces a CCA (canonical correlation analysis) weighting matrix to an estimation method of the innovations model previously proposed by the authors. A numerical simulation illustrates that the CCA weighting reduces the covariance of the estimate and that the proposed method gives similar or better performance compared to Closed-Loop MOESP and PBSID. Especially, the design parameter called \"past horizon\" in the proposed method can be set small compared to Closed-Loop MOESP and PBSID. It is also analyzed how the bias of the estimate is reduced."},"is_international_presentation":true},"priority":"input_data"}
line:4, {"insert":{"user_id":"1000039003","type":"presentations","id":"38690549"},"force":{"see_also":[{"@id":"https://www.scopus.com/record/display.url?eid=2-s2.0-85118112201&origin=inward","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=386345","label":"url"}],"presentation_title":{"en":"On consistency of output-error closed-loop subspace model identification for systems compensated by general LTI controllers","ja":"On consistency of output-error closed-loop subspace model identification for systems compensated by general LTI controllers"},"presenters":{"en":[{"name":"Oku Hiroshi"},{"name":"Ikeda Kenji"}],"ja":[{"name":"奥 宏史"},{"name":"池田 建司"}]},"event":{"en":"Preprints of the 19th IFAC Symposium on System Identification","ja":"Preprints of the 19th IFAC Symposium on System Identification"},"publication_date":"2021-07-16","languages":["eng"],"location":{"en":"(Virtual) Padova","ja":"(Virtual) Padova"},"description":{"en":"This paper deals with consistency analysis of a closed-loop subspace model identification method for systems compensated by general linear time-invariant feedback controllers. The results presented here are a straightforward extension from the authors' recent work for systems compensated with constant gain feedback controllers. It is shown that the estimate of the extended observability matrix, which is obtained from our closed-loop subspace model identification method, is consistent up to a similarity transformation","ja":"This paper deals with consistency analysis of a closed-loop subspace model identification method for systems compensated by general linear time-invariant feedback controllers. The results presented here are a straightforward extension from the authors' recent work for systems compensated with constant gain feedback controllers. It is shown that the estimate of the extended observability matrix, which is obtained from our closed-loop subspace model identification method, is consistent up to a similarity transformation"},"is_international_presentation":true},"priority":"input_data"}
line:5, {"insert":{"user_id":"1000039003","type":"presentations","id":"38690550"},"force":{"see_also":[{"@id":"https://www.scopus.com/record/display.url?eid=2-s2.0-85118136466&origin=inward","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=386344","label":"url"}],"presentation_title":{"en":"Minimal realization of an unstable plant under feedback","ja":"Minimal realization of an unstable plant under feedback"},"presenters":{"en":[{"name":"Tanaka Hideyuki"},{"name":"Ikeda Kenji"}],"ja":[{"name":"田中 秀幸"},{"name":"池田 建司"}]},"event":{"en":"Preprints of the 19th IFAC Symposium on System Identification","ja":"Preprints of the 19th IFAC Symposium on System Identification"},"publication_date":"2021-07-16","languages":["eng"],"location":{"en":"(Virtual) Padova","ja":"(Virtual) Padova"},"description":{"en":"This paper formulates a problem of finding a minimal realization of an unstable plant under feedback, given an infinite string of input-output data of the plant. It is assumed that the plant and noise models have non-common state matrices and that the plant is stabilized by a strictly proper linear-time-invariant controller of the finite order. A minimal realization of the innovation form has been estimated using closed-loop subspace identification algorithms, whereas that of the plant is determined in this paper. A matrix is proposed to avoid a numerical problem of a traditional algorithm applied to an unstable plant.","ja":"This paper formulates a problem of finding a minimal realization of an unstable plant under feedback, given an infinite string of input-output data of the plant. It is assumed that the plant and noise models have non-common state matrices and that the plant is stabilized by a strictly proper linear-time-invariant controller of the finite order. A minimal realization of the innovation form has been estimated using closed-loop subspace identification algorithms, whereas that of the plant is determined in this paper. A matrix is proposed to avoid a numerical problem of a traditional algorithm applied to an unstable plant."},"is_international_presentation":true},"priority":"input_data"}
line:6, {"insert":{"user_id":"1000039003","type":"presentations","id":"43070561"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=400351","label":"url"}],"presentation_title":{"en":"On error analysis of a closed-loop subspace model identification method","ja":"On error analysis of a closed-loop subspace model identification method"},"presenters":{"en":[{"name":"Oku Hiroshi"},{"name":"Ikeda Kenji"}],"ja":[{"name":"奥 宏史"},{"name":"池田 建司"}]},"event":{"en":"24th International Symposium on Mathematical Theory of Networks and Systems","ja":"24th International Symposium on Mathematical Theory of Networks and Systems"},"publication_date":"2020-08","languages":["eng"],"location":{"en":"Cambridge","ja":"Cambridge"},"description":{"en":"This paper studies error analysis and asymptotic variance of a closed-loop subspace model identification method for a system described with the output-error state-space representation. For details, since the procedure of the identification method includes the QR factorization of stacked data Hankel matrices, this study investigates asymptotic properties of block elements of the triangular matrix obtained from the QR factorization. The set of the block elements is separated into two components, namely, the signal-based component and the noise-based component. The contributions are to derive asymptotic properties of both components and to obtain the asymptotic covariance matrix of the vectorization of the noise-based component.","ja":"This paper studies error analysis and asymptotic variance of a closed-loop subspace model identification method for a system described with the output-error state-space representation. For details, since the procedure of the identification method includes the QR factorization of stacked data Hankel matrices, this study investigates asymptotic properties of block elements of the triangular matrix obtained from the QR factorization. The set of the block elements is separated into two components, namely, the signal-based component and the noise-based component. The contributions are to derive asymptotic properties of both components and to obtain the asymptotic covariance matrix of the vectorization of the noise-based component."},"is_international_presentation":true},"priority":"input_data"}
line:7, {"insert":{"user_id":"1000039003","type":"presentations","id":"33183633"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=377161","label":"url"}],"presentation_title":{"en":"Consistency analysis of the extended observability matrix of output-error closed-loop subspace model identification","ja":"Consistency analysis of the extended observability matrix of output-error closed-loop subspace model identification"},"presenters":{"en":[{"name":"Oku Hiroshi"},{"name":"Ikeda Kenji"}],"ja":[{"name":"奥 宏史"},{"name":"池田 建司"}]},"event":{"en":"Preprints of the 21st IFAC World Congress","ja":"Preprints of the 21st IFAC World Congress"},"publication_date":"2020-07-11","languages":["eng"],"location":{"en":"Berlin","ja":"Berlin"},"description":{"en":"This paper studies statistical properties of a closed-loop subspace model identification method for a system described with the output-error state-space representation. For details, the limit value of the matrix to be singular-value-decomposed to estimate the extended observability matrix is investigated. The contribution is to ensure that the estimate of the extended observability matrix is consistent up to a similarity transform.","ja":"This paper studies statistical properties of a closed-loop subspace model identification method for a system described with the output-error state-space representation. For details, the limit value of the matrix to be singular-value-decomposed to estimate the extended observability matrix is investigated. The contribution is to ensure that the estimate of the extended observability matrix is consistent up to a similarity transform."},"is_international_presentation":true},"priority":"input_data"}
line:8, {"insert":{"user_id":"1000039003","type":"presentations","id":"33183634"},"force":{"see_also":[{"@id":"https://www.scopus.com/record/display.url?eid=2-s2.0-85105064752&origin=inward","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=377160","label":"url"}],"presentation_title":{"en":"Subspace identification algorithm for stochastic systems equipped with zeros close to unit circle","ja":"Subspace identification algorithm for stochastic systems equipped with zeros close to unit circle"},"presenters":{"en":[{"name":"Tanaka Hideyuki"},{"name":"Ikeda Kenji"}],"ja":[{"name":"田中 秀幸"},{"name":"池田 建司"}]},"event":{"en":"Preprints of the 21st IFAC World Congress","ja":"Preprints of the 21st IFAC World Congress"},"publication_date":"2020-07-11","languages":["eng"],"location":{"en":"Berlin","ja":"Berlin"},"description":{"en":"In identifying a stochastic system possessing zeros close to the unit circle, the effect of the initial state appears in the estimates. This paper derives a stochastic subspace identification algorithm for such a system. A new stochastic realization algorithm is developed based on the covariance matrices of the state and the white-noise input, by taking the initial state and positive realness into account. A subspace identification algorithm is obtained by applying the realization algorithm to a finite string of data. Numerical simulation results show that the proposed algorithm provides favorable results compared with the conventional ones.","ja":"In identifying a stochastic system possessing zeros close to the unit circle, the effect of the initial state appears in the estimates. This paper derives a stochastic subspace identification algorithm for such a system. A new stochastic realization algorithm is developed based on the covariance matrices of the state and the white-noise input, by taking the initial state and positive realness into account. A subspace identification algorithm is obtained by applying the realization algorithm to a finite string of data. Numerical simulation results show that the proposed algorithm provides favorable results compared with the conventional ones."},"is_international_presentation":true},"priority":"input_data"}
line:9, {"insert":{"user_id":"1000039003","type":"presentations","id":"33183635"},"force":{"see_also":[{"@id":"https://www.scopus.com/record/display.url?eid=2-s2.0-85107612968&origin=inward","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=377159","label":"url"}],"presentation_title":{"en":"An Estimation Method of Innovations Model in Closed-Loop Environment with Lower Horizons","ja":"An Estimation Method of Innovations Model in Closed-Loop Environment with Lower Horizons"},"presenters":{"en":[{"name":"Ikeda Kenji"},{"name":"Tanaka Hideyuki"}],"ja":[{"name":"池田 建司"},{"name":"田中 秀幸"}]},"event":{"en":"Preprints of the 21st IFAC World Congress","ja":"Preprints of the 21st IFAC World Congress"},"publication_date":"2020-07-11","languages":["eng"],"location":{"en":"Berlin","ja":"Berlin"},"description":{"en":"This paper proposes an estimation method of the innovations model in closed loop environment by using the estimate of the innovations process. The estimate of the innovations process from the finite interval of data has a bias, so are the estimate of the proposed method. However, it is analyzed that the bias can be reduced. The Kalman gain and the covariance of the innovations process are estimated by using a semi-definite programming problem previously proposed by the authors. Numerical simulation illustrates the proposed method gives better performance than Closed-Loop MOESP and PBSID when the data length is large and the past horizon is selected low.","ja":"This paper proposes an estimation method of the innovations model in closed loop environment by using the estimate of the innovations process. The estimate of the innovations process from the finite interval of data has a bias, so are the estimate of the proposed method. However, it is analyzed that the bias can be reduced. The Kalman gain and the covariance of the innovations process are estimated by using a semi-definite programming problem previously proposed by the authors. Numerical simulation illustrates the proposed method gives better performance than Closed-Loop MOESP and PBSID when the data length is large and the past horizon is selected low."},"is_international_presentation":true},"priority":"input_data"}
line:10, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378641"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=364194","label":"url"}],"presentation_title":{"en":"Modeling of parameter dependent systems using the impulse response and the kernel method","ja":"Modeling of parameter dependent systems using the impulse response and the kernel method"},"presenters":{"en":[{"name":"Tanaka Hideyuki"},{"name":"Ikeda Kenji"}],"ja":[{"name":"田中 秀幸"},{"name":"池田 建司"}]},"event":{"en":"Proceedings of SICE Annual Conference 2019","ja":"Proceedings of SICE Annual Conference 2019"},"publication_date":"2019-09-11","languages":["eng"],"promoter":{"en":"The Society of Instrument and Control Engineers","ja":"The Society of Instrument and Control Engineers"},"location":{"en":"Hiroshima","ja":"Hiroshima"},"description":{"en":"This paper analyzes the covariance of the estimated system matrices in PO-MOESP method and applies the result to the calculation of the covariance of the coefficient of the transfer function obtained from the estimated system matrices. In the analysis of the covariance of the system matrices, consistent estimates of Kalman gain and the covariance of the innovations process are utilized. Unscented transformation is applied to calculate the covariance of the coefficient of the transfer function. A numerical simulation is shown to illustrate the validity of the analysis.","ja":"This paper analyzes the covariance of the estimated system matrices in PO-MOESP method and applies the result to the calculation of the covariance of the coefficient of the transfer function obtained from the estimated system matrices. In the analysis of the covariance of the system matrices, consistent estimates of Kalman gain and the covariance of the innovations process are utilized. Unscented transformation is applied to calculate the covariance of the coefficient of the transfer function. A numerical simulation is shown to illustrate the validity of the analysis."},"is_international_presentation":true},"priority":"input_data"}
line:11, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378642"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=364193","label":"url"}],"presentation_title":{"en":"Covariance of the Coefficient of the Transfer Function Estimated via PO-MOESP Method","ja":"Covariance of the Coefficient of the Transfer Function Estimated via PO-MOESP Method"},"presenters":{"en":[{"name":"Ikeda Kenji"},{"name":"Tanaka Hideyuki"}],"ja":[{"name":"池田 建司"},{"name":"田中 秀幸"}]},"event":{"en":"Proceedings of SICE Annual Conference 2019","ja":"Proceedings of SICE Annual Conference 2019"},"publication_date":"2019-09-11","languages":["eng"],"promoter":{"en":"The Society of Instrument and Control Engineers","ja":"The Society of Instrument and Control Engineers"},"location":{"en":"Hiroshima","ja":"Hiroshima"},"description":{"en":"This paper analyzes the covariance of the estimated system matrices in PO-MOESP method and applies the result to the calculation of the covariance of the coefficient of the transfer function obtained from the estimated system matrices. In the analysis of the covariance of the system matrices, consistent estimates of Kalman gain and the covariance of the innovations process are utilized. Unscented transformation is applied to calculate the covariance of the coefficient of the transfer function. A numerical simulation is shown to illustrate the validity of the analysis.","ja":"This paper analyzes the covariance of the estimated system matrices in PO-MOESP method and applies the result to the calculation of the covariance of the coefficient of the transfer function obtained from the estimated system matrices. In the analysis of the covariance of the system matrices, consistent estimates of Kalman gain and the covariance of the innovations process are utilized. Unscented transformation is applied to calculate the covariance of the coefficient of the transfer function. A numerical simulation is shown to illustrate the validity of the analysis."},"is_international_presentation":true},"priority":"input_data"}
line:12, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378643"},"force":{"see_also":[{"@id":"https://www.scopus.com/record/display.url?eid=2-s2.0-85069893382&origin=inward","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=356100","label":"url"}],"presentation_title":{"en":"On the Uniqueness of the Estimate of Innovations Model","ja":"On the Uniqueness of the Estimate of Innovations Model"},"presenters":{"en":[{"name":"Ikeda Kenji"},{"name":"Tanaka Hideyuki"}],"ja":[{"name":"池田 建司"},{"name":"田中 秀幸"}]},"event":{"en":"Proceedings of the ASCC2019","ja":"Proceedings of the ASCC2019"},"publication_date":"2019-06-11","languages":["eng"],"promoter":{"en":"Japan Society of Mechanical Engineers","ja":"Japan Society of Mechanical Engineers"},"location":{"en":"Kitakyushu","ja":"Kitakyushu"},"description":{"en":"In this paper, a sufficient condition for identifying the Kalman gain and the covariance matrix of the innovations process is derived. Under the condition, the innovations model can uniquely be estimated in a generic sense by solving a semidefinite programming problem proposed in the previous work of one of the authors. A numerical simulation illustrates the consistency of the proposed estimate.","ja":"In this paper, a sufficient condition for identifying the Kalman gain and the covariance matrix of the innovations process is derived. Under the condition, the innovations model can uniquely be estimated in a generic sense by solving a semidefinite programming problem proposed in the previous work of one of the authors. A numerical simulation illustrates the consistency of the proposed estimate."},"is_international_presentation":true},"priority":"input_data"}
line:13, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378644"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=348260","label":"url"}],"presentation_title":{"en":"On the Uniqueness of Spectral Density Function in an SDP Problem for the Estimation of Innovations Model","ja":"On the Uniqueness of Spectral Density Function in an SDP Problem for the Estimation of Innovations Model"},"presenters":{"en":[{"name":"Ikeda Kenji"},{"name":"Tanaka Hideyuki"}],"ja":[{"name":"池田 建司"},{"name":"田中 秀幸"}]},"event":{"en":"Proceedings of SICE Annual Conference 2018","ja":"Proceedings of SICE Annual Conference 2018"},"publication_date":"2018-09-14","languages":["eng"],"promoter":{"en":"The Society of Instrument and Control Engineers","ja":"The Society of Instrument and Control Engineers"},"location":{"en":"Nara","ja":"Nara"},"description":{"en":"The authors proposed an SDP (Semi-definite programming) formulation for the identification of the Kalman gain and the covariance matrix of the innovations process, aiming at a consistent estimation. However, the rank of a coefficient matrix of the variables does not have a column full rank, so that the uniqueness of the solution is not clear. In this paper, it shown that the Kalman gain and the covariance of the innovation can be uniquely estimated under a certain condition.","ja":"The authors proposed an SDP (Semi-definite programming) formulation for the identification of the Kalman gain and the covariance matrix of the innovations process, aiming at a consistent estimation. However, the rank of a coefficient matrix of the variables does not have a column full rank, so that the uniqueness of the solution is not clear. In this paper, it shown that the Kalman gain and the covariance of the innovation can be uniquely estimated under a certain condition."},"is_international_presentation":true},"priority":"input_data"}
line:14, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378645"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=348263","label":"url"}],"presentation_title":{"en":"Closed-loop subspace identification algorithm based on finite-interval realization","ja":"Closed-loop subspace identification algorithm based on finite-interval realization"},"presenters":{"en":[{"name":"Tanaka Hideyuki"},{"name":"Ikeda Kenji"}],"ja":[{"name":"田中 秀幸"},{"name":"池田 建司"}]},"event":{"en":"Proceedings of SICE Annual Conference 2018","ja":"Proceedings of SICE Annual Conference 2018"},"publication_date":"2018-09-09","languages":["eng"],"promoter":{"en":"International Federation of Automatic Control","ja":"International Federation of Automatic Control"},"location":{"en":"Nara","ja":"Nara"},"description":{"en":"A closed-loop subspace identification method is developed based on the realization of finite-interval data. By making a new assumption, it is shown that the proposed method shorten the period required for the one developed earlier by the authors. Numerical simulation shows effectiveness of the proposed method.","ja":"A closed-loop subspace identification method is developed based on the realization of finite-interval data. By making a new assumption, it is shown that the proposed method shorten the period required for the one developed earlier by the authors. Numerical simulation shows effectiveness of the proposed method."},"is_international_presentation":true},"priority":"input_data"}
line:15, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378646"},"force":{"see_also":[{"@id":"https://www.scopus.com/record/display.url?eid=2-s2.0-85054430235&origin=inward","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=348259","label":"url"}],"presentation_title":{"en":"Closed-loop subspace identification taking initial state into account","ja":"Closed-loop subspace identification taking initial state into account"},"presenters":{"en":[{"name":"Tanaka Hideyuki"},{"name":"Ikeda Kenji"}],"ja":[{"name":"田中 秀幸"},{"name":"池田 建司"}]},"event":{"en":"18th IFAC Sympotium on System Identification (SYSID 2018)","ja":"18th IFAC Sympotium on System Identification (SYSID 2018)"},"publication_date":"2018-07-09","languages":["eng"],"promoter":{"en":"International Federation of Automatic Control","ja":"International Federation of Automatic Control"},"location":{"en":"Stockholm","ja":"Stockholm"},"description":{"en":"This paper develops a closed-loop subspace identification algorithm for the systems with the stochastic part possessing zeros close to the unit circle. The proposed algorithm estimates the system under the feedback loop, taking the effect of the initial state into account. A nonlinear optimization technique is applied for computing the Kalman gain and the covariance of the innovation. Numerical simulation shows that the proposed algorithm successfully provides models by taking the initial effect.","ja":"This paper develops a closed-loop subspace identification algorithm for the systems with the stochastic part possessing zeros close to the unit circle. The proposed algorithm estimates the system under the feedback loop, taking the effect of the initial state into account. A nonlinear optimization technique is applied for computing the Kalman gain and the covariance of the innovation. Numerical simulation shows that the proposed algorithm successfully provides models by taking the initial effect."},"is_international_presentation":true},"priority":"input_data"}
line:16, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378647"},"force":{"see_also":[{"@id":"https://www.scopus.com/record/display.url?eid=2-s2.0-85047485746&origin=inward","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=338033","label":"url"}],"presentation_title":{"en":"An SDP Formulation for Consistent Estimate of Innovations Model","ja":"An SDP Formulation for Consistent Estimate of Innovations Model"},"presenters":{"en":[{"name":"Ikeda Kenji"},{"name":"Tanaka Hideyuki"}],"ja":[{"name":"池田 建司"},{"name":"田中 秀幸"}]},"event":{"en":"The 2017 Asian Control Conference","ja":"The 2017 Asian Control Conference"},"publication_date":"2017-12-20","languages":["eng"],"location":{"en":"Gold Coast","ja":"Gold Coast"},"description":{"en":"This paper proposes an SDP (Semi Definite Programming) problem formulation aiming at consistently estimating Kalman gain and the covariance of the innovations process. In the previous papers, the problem of estimating these parameters was formulated as a nonlinear optimization problem. It is shown that the problem can be reformulated as an SDP by extending the variables. A numerical example illustrates the consistency of the estimates.","ja":"This paper proposes an SDP (Semi Definite Programming) problem formulation aiming at consistently estimating Kalman gain and the covariance of the innovations process. In the previous papers, the problem of estimating these parameters was formulated as a nonlinear optimization problem. It is shown that the problem can be reformulated as an SDP by extending the variables. A numerical example illustrates the consistency of the estimates."},"is_international_presentation":true},"priority":"input_data"}
line:17, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378648"},"force":{"see_also":[{"@id":"https://www.scopus.com/record/display.url?eid=2-s2.0-85044213594&origin=inward","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=338032","label":"url"}],"presentation_title":{"en":"An LMI Problem for Consistent Estimate of Innovations Model","ja":"An LMI Problem for Consistent Estimate of Innovations Model"},"presenters":{"en":[{"name":"Ikeda Kenji"}],"ja":[{"name":"池田 建司"}]},"event":{"en":"Proceedings of SICE Annual Conference 2017","ja":"Proceedings of SICE Annual Conference 2017"},"publication_date":"2017-09-20","languages":["eng"],"location":{"en":"Kanazawa","ja":"Kanazawa"},"description":{"en":"This paper proposes an LMI problem for consistently estimating Kalman gain and the covariance of the innovations process. In the previous papers, the problem of estimating Kalman gain and covariance consistently is formulated as a nonlinear optimization problem. It is shown that the problem can be reformulated as an LMI problem by extending the variables and that the solution gives consistent estimates. It is also shown a sufficient condition for the existence of a consistent estimate.","ja":"This paper proposes an LMI problem for consistently estimating Kalman gain and the covariance of the innovations process. In the previous papers, the problem of estimating Kalman gain and covariance consistently is formulated as a nonlinear optimization problem. It is shown that the problem can be reformulated as an LMI problem by extending the variables and that the solution gives consistent estimates. It is also shown a sufficient condition for the existence of a consistent estimate."},"is_international_presentation":true},"priority":"input_data"}
line:18, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378649"},"force":{"see_also":[{"@id":"https://www.scopus.com/record/display.url?eid=2-s2.0-85044142976&origin=inward","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=338031","label":"url"}],"presentation_title":{"en":"Identification of Linear Stochastic Systems Taking Initial State into Account","ja":"Identification of Linear Stochastic Systems Taking Initial State into Account"},"presenters":{"en":[{"name":"Tanaka Hideyuki"},{"name":"Ikeda Kenji"}],"ja":[{"name":"田中 秀幸"},{"name":"池田 建司"}]},"event":{"en":"Proceedings of SICE Annual Conference 2017","ja":"Proceedings of SICE Annual Conference 2017"},"publication_date":"2017-09-20","languages":["eng"],"location":{"en":"Kanazawa","ja":"Kanazawa"},"description":{"en":"This paper derives an algorithm for identifying linear stochastic systems, by taking the effect of the initial state into account. The proposed algorithm computes coefficients by using the extended observability matrix for deleting the effect. Numerical simulation shows that the proposed method outperforms existence methods.","ja":"This paper derives an algorithm for identifying linear stochastic systems, by taking the effect of the initial state into account. The proposed algorithm computes coefficients by using the extended observability matrix for deleting the effect. Numerical simulation shows that the proposed method outperforms existence methods."},"is_international_presentation":true},"priority":"input_data"}
line:19, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378650"},"force":{"see_also":[{"@id":"https://www.scopus.com/record/display.url?eid=2-s2.0-85042718067&origin=inward","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=338029","label":"url"}],"presentation_title":{"en":"Investigation of Effects of Silica Particles on Light Extraction Efficiency of Light-Emitting Diode Packaging Using Ray-Tracing Simulation","ja":"Investigation of Effects of Silica Particles on Light Extraction Efficiency of Light-Emitting Diode Packaging Using Ray-Tracing Simulation"},"presenters":{"en":[{"name":"Kashiwao Tomoaki"},{"name":"Yoshikawa Yukari"},{"name":"Otsuka Takeshi"},{"name":"Ikeda Kenji"},{"name":"Bahadori Alireza"}],"ja":[{"name":"Kashiwao Tomoaki"},{"name":"Yoshikawa Yukari"},{"name":"Otsuka Takeshi"},{"name":"池田 建司"},{"name":"Bahadori Alireza"}]},"event":{"en":"Proceedings of SICE Annual Conference 2017","ja":"Proceedings of SICE Annual Conference 2017"},"publication_date":"2017-09-20","languages":["eng"],"location":{"en":"Kanazawa","ja":"Kanazawa"},"description":{"en":"This paper reports an investigation of the effects of silica particles contained in mold resin to the light extraction efficiency of light-emitting diode (LED) packaging (PKG) using ray-tracing simulations. The light extraction efficiencies, namely, luminous and radiant flux of the rays emitted from the PKG, are improved with the silica particles. The silica particles cause the scattering of the rays in the mold resin of the LED PKG. If the scattering can be generated properly, the light extraction efficiency can be improved. Varying the volume percentage of the silica particles, its effects to the light extraction efficiency are confirmed. Finally, we could confirm the improvement of luminous higher than 0.5 lm and radiant flux higher than 0.02 W respectively from the simulation results.","ja":"This paper reports an investigation of the effects of silica particles contained in mold resin to the light extraction efficiency of light-emitting diode (LED) packaging (PKG) using ray-tracing simulations. The light extraction efficiencies, namely, luminous and radiant flux of the rays emitted from the PKG, are improved with the silica particles. The silica particles cause the scattering of the rays in the mold resin of the LED PKG. If the scattering can be generated properly, the light extraction efficiency can be improved. Varying the volume percentage of the silica particles, its effects to the light extraction efficiency are confirmed. Finally, we could confirm the improvement of luminous higher than 0.5 lm and radiant flux higher than 0.02 W respectively from the simulation results."},"is_international_presentation":true},"priority":"input_data"}
line:20, {"insert":{"user_id":"1000039003","type":"presentations","id":"30496251"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=338028","label":"url"}],"presentation_title":{"en":"Optimization of a Light Reflector Angle of Surface-mount-devide Light-emitting Diode Packaging Using Ray-tracing Simulation","ja":"Optimization of a Light Reflector Angle of Surface-mount-devide Light-emitting Diode Packaging Using Ray-tracing Simulation"},"presenters":{"en":[{"name":"Kashiwao Tomoaki"},{"name":"Hiura Mayu"},{"name":"Alireza Bahadori"},{"name":"Ikeda Kenji"},{"name":"Shimomura Takao"}],"ja":[{"name":"Kashiwao Tomoaki"},{"name":"Hiura Mayu"},{"name":"Alireza Bahadori"},{"name":"池田 建司"},{"name":"下村 隆夫"}]},"event":{"en":"Proceedings of SICE Annual Conference 2016","ja":"Proceedings of SICE Annual Conference 2016"},"publication_date":"2016-09-21","languages":["eng"],"location":{"en":"Tsukuba","ja":"Tsukuba"},"description":{"en":"This paper presents an investigation of the optimization of the light reflector angle of top-view (TV) packaging (PKG) of a surface-mount-device (SMD) light-emitting diode (LED) using ray-tracing simulations. The light extraction efficiency which is the total relative intensity of the rays emitted from the PKG, is used for the evaluation index of the output performance of the PKG. The cavity angles composing the light reflectors of TV PKG with round and square-shaped cavity are optimized on the basis of the optical design method proposed in our previous study. In addition, the optimal angles under the conditions where the mold resin contains a phosphor affecting the light extraction efficiency intensively, are investigated. Finally, we suggest important factors for designing the light reflector (cavity) angle of TV LED PKG.","ja":"This paper presents an investigation of the optimization of the light reflector angle of top-view (TV) packaging (PKG) of a surface-mount-device (SMD) light-emitting diode (LED) using ray-tracing simulations. The light extraction efficiency which is the total relative intensity of the rays emitted from the PKG, is used for the evaluation index of the output performance of the PKG. The cavity angles composing the light reflectors of TV PKG with round and square-shaped cavity are optimized on the basis of the optical design method proposed in our previous study. In addition, the optimal angles under the conditions where the mold resin contains a phosphor affecting the light extraction efficiency intensively, are investigated. Finally, we suggest important factors for designing the light reflector (cavity) angle of TV LED PKG."},"is_international_presentation":true},"priority":"input_data"}
line:21, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378653"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=338026","label":"url"}],"presentation_title":{"en":"An equation for estimating Kalman gain based on the finite-interval stochastic realization","ja":"An equation for estimating Kalman gain based on the finite-interval stochastic realization"},"presenters":{"en":[{"name":"Tanaka Hideyuki"},{"name":"Ikeda Kenji"}],"ja":[{"name":"田中 秀幸"},{"name":"池田 建司"}]},"event":{"en":"Proceedings of SICE Annual Conference 2016","ja":"Proceedings of SICE Annual Conference 2016"},"publication_date":"2016-09-21","languages":["eng"],"location":{"en":"Tsukuba","ja":"Tsukuba"},"description":{"en":"This paper derives an equation for estimating the Kalman gain based on the finite-interval stochastic realization. It also proposes an algorithm for better estimates for the Kalman gain, by improving the finite-interval realization algorithm. Numerical simulation shows that the proposed algorithm successfully improves estimates of the Kalman gain.","ja":"This paper derives an equation for estimating the Kalman gain based on the finite-interval stochastic realization. It also proposes an algorithm for better estimates for the Kalman gain, by improving the finite-interval realization algorithm. Numerical simulation shows that the proposed algorithm successfully improves estimates of the Kalman gain."},"is_international_presentation":true},"priority":"input_data"}
line:22, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378654"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=324008","label":"url"}],"presentation_title":{"en":"Consistent Estimates of Kalman Gain and the Covariance of the Innovations Process","ja":"Consistent Estimates of Kalman Gain and the Covariance of the Innovations Process"},"presenters":{"en":[{"name":"Ikeda Kenji"}],"ja":[{"name":"池田 建司"}]},"event":{"en":"Proceedings of SICE Annual Conference 2016","ja":"Proceedings of SICE Annual Conference 2016"},"publication_date":"2016-09-21","languages":["eng"],"location":{"en":"Tsukuba","ja":"Tsukuba"},"description":{"en":"A problem of estimating Kalman gain and the covariance of the innovations process consistently was proposed by the author, which is formulated as a BMI problem and an algorithm solving the problem is also proposed. However, a given numerical solution requires computational costs. In this paper, in order to reduce the computational costs, an algorithm by using a Cholesky factor of some positive definite matrix is proposed.","ja":"A problem of estimating Kalman gain and the covariance of the innovations process consistently was proposed by the author, which is formulated as a BMI problem and an algorithm solving the problem is also proposed. However, a given numerical solution requires computational costs. In this paper, in order to reduce the computational costs, an algorithm by using a Cholesky factor of some positive definite matrix is proposed."},"is_international_presentation":true},"priority":"input_data"}
line:23, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378655"},"force":{"see_also":[{"@id":"https://www.scopus.com/record/display.url?eid=2-s2.0-84991043292&origin=inward","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=317138","label":"url"}],"presentation_title":{"en":"Consistent Estimate of Innovations Model","ja":"Consistent Estimate of Innovations Model"},"presenters":{"en":[{"name":"Ikeda Kenji"}],"ja":[{"name":"池田 建司"}]},"event":{"en":"Preprints, 12th IFAC International Workshop on Adaptation and Learning in Control and Signal Processing","ja":"Preprints, 12th IFAC International Workshop on Adaptation and Learning in Control and Signal Processing"},"publication_date":"2016-06-30","languages":["eng"],"promoter":{"en":"International Federation of Automatic Control","ja":"International Federation of Automatic Control"},"location":{"en":"Eindhoven","ja":"Eindhoven"},"description":{"en":"This paper proposes a numerical solution of the consistent estimates of Kalman gain and the covariance of the innovations process in the innovations model. The estimates are given as solutions of some BMI problem, so an iterative algorithm for solving the problem will be required. An algorithm for a class of BMI problems in which the objective function is nonincreasing is applied for solving this problem. Explicit formulations of the estimation error in PO-MOESP method are also derived and shown to be consistent so that the consistent estimate of all the parameters in the innovations model are obtained.","ja":"This paper proposes a numerical solution of the consistent estimates of Kalman gain and the covariance of the innovations process in the innovations model. The estimates are given as solutions of some BMI problem, so an iterative algorithm for solving the problem will be required. An algorithm for a class of BMI problems in which the objective function is nonincreasing is applied for solving this problem. Explicit formulations of the estimation error in PO-MOESP method are also derived and shown to be consistent so that the consistent estimate of all the parameters in the innovations model are obtained."},"is_international_presentation":true},"priority":"input_data"}
line:24, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378656"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=317132","label":"url"}],"presentation_title":{"en":"Frequency Domain Uncertainty in PO-MOESP Method","ja":"Frequency Domain Uncertainty in PO-MOESP Method"},"presenters":{"en":[{"name":"Ikeda Kenji"}],"ja":[{"name":"池田 建司"}]},"event":{"en":"Proceedings of the 47th ISCIE International Symposium on Stochastic Systems Theory and Its Applications","ja":"Proceedings of the 47th ISCIE International Symposium on Stochastic Systems Theory and Its Applications"},"publication_date":"2015-12-06","languages":["eng"],"location":{"en":"Honolulu","ja":"Honolulu"},"description":{"en":"This paper provides an estimation method of the uncertainty of the pulse transfer function from the covariance matrices of the estimates of the vectorized system matrices in PO-MOESP method, in which Kalman gain and the covariance of the innovations process are consistently estimated by using the previously proposed method by the author. In the conventional methods, the estimates of Kalman gain and the covariance of the innovations process are asymptotically consistent, i.e., the estimates converges in probability to the true value as not only the data length but also the past horizon go to infinity. The contribution of the paper is to provide a consistent estimate of the frequency domain uncertainty for fixed past/future horizons.","ja":"This paper provides an estimation method of the uncertainty of the pulse transfer function from the covariance matrices of the estimates of the vectorized system matrices in PO-MOESP method, in which Kalman gain and the covariance of the innovations process are consistently estimated by using the previously proposed method by the author. In the conventional methods, the estimates of Kalman gain and the covariance of the innovations process are asymptotically consistent, i.e., the estimates converges in probability to the true value as not only the data length but also the past horizon go to infinity. The contribution of the paper is to provide a consistent estimate of the frequency domain uncertainty for fixed past/future horizons."},"is_international_presentation":true},"priority":"input_data"}
line:25, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378657"},"force":{"see_also":[{"@id":"https://www.scopus.com/record/display.url?eid=2-s2.0-84964318398&origin=inward","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=308180","label":"url"}],"presentation_title":{"en":"Consistent Estimate of Kalman Gain in Subspace Identification Method","ja":"Consistent Estimate of Kalman Gain in Subspace Identification Method"},"presenters":{"en":[{"name":"Ikeda Kenji"}],"ja":[{"name":"池田 建司"}]},"event":{"en":"The 2015 IEEE Control Systems Society; Multiconference on Systems and Control","ja":"The 2015 IEEE Control Systems Society; Multiconference on Systems and Control"},"publication_date":"2015-09-22","languages":["eng"],"promoter":{"en":"IEEE CSS","ja":"IEEE CSS"},"location":{"en":"Sydney","ja":"Sydney"},"description":{"en":"This paper proposes a consistent estimates of the Kalman gain and the covariance of the innovations in the framework of subspace identification. The estimates of the system matrices in PO-MOESP method are known to be consistent while the estimates of (A,C) matrices in N4SID method are asymptotically consistent, i.e., each estimate converges in probability to the true value if not only the data length but also the past horizon goes to infinity. The conventional estimates of the Kalman gain and the innovations covariance are asymptotically consistent. To consider the gap relating amount, consistent estimates of the Kalman gain and the innovations covariance are obtained.","ja":"This paper proposes a consistent estimates of the Kalman gain and the covariance of the innovations in the framework of subspace identification. The estimates of the system matrices in PO-MOESP method are known to be consistent while the estimates of (A,C) matrices in N4SID method are asymptotically consistent, i.e., each estimate converges in probability to the true value if not only the data length but also the past horizon goes to infinity. The conventional estimates of the Kalman gain and the innovations covariance are asymptotically consistent. To consider the gap relating amount, consistent estimates of the Kalman gain and the innovations covariance are obtained."},"is_international_presentation":true},"priority":"input_data"}
line:26, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378658"},"force":{"see_also":[{"@id":"https://www.scopus.com/record/display.url?eid=2-s2.0-84957629036&origin=inward","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=295180","label":"url"}],"presentation_title":{"en":"Estimation Error Analysis of System Matrices in Some Subspace Identification Methods","ja":"Estimation Error Analysis of System Matrices in Some Subspace Identification Methods"},"presenters":{"en":[{"name":"Ikeda Kenji"},{"name":"Oku Hiroshi"}],"ja":[{"name":"池田 建司"},{"name":"奥 宏史"}]},"event":{"en":"Proceedings of 10th Asian Control Conference","ja":"Proceedings of 10th Asian Control Conference"},"publication_date":"2015-06","languages":["eng"],"location":{"en":"Kota Kinabalu","ja":"Kota Kinabalu"},"description":{"en":"Explicit formulation of dominant parts of the estimation errors of system matrices in PO-MOESP method and a robust N4SID like method are derived based on a proposing lemma on a gap between two singular subspaces. By considering the gap instead of the perturbations of the singular vectors, it is shown that the estimate in PO-MOESP method is unbiased while the estimate in the robust N4SID like method has an asymptotic bias when the past horizon p is finite.","ja":"Explicit formulation of dominant parts of the estimation errors of system matrices in PO-MOESP method and a robust N4SID like method are derived based on a proposing lemma on a gap between two singular subspaces. By considering the gap instead of the perturbations of the singular vectors, it is shown that the estimate in PO-MOESP method is unbiased while the estimate in the robust N4SID like method has an asymptotic bias when the past horizon p is finite."},"is_international_presentation":true},"priority":"input_data"}
line:27, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378659"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=288385","label":"url"}],"presentation_title":{"en":"Effect of Optical Properties of Components for Light Extraction Efficiency of SMD LEDs","ja":"Effect of Optical Properties of Components for Light Extraction Efficiency of SMD LEDs"},"presenters":{"en":[{"name":"Kashiwao Tomoaki"},{"name":"Hiura Mayu"},{"name":"Hara Daigo"},{"name":"Ikeda Kenji"},{"name":"Shimomura Takao"}],"ja":[{"name":"Kashiwao Tomoaki"},{"name":"Hiura Mayu"},{"name":"Hara Daigo"},{"name":"池田 建司"},{"name":"下村 隆夫"}]},"event":{"en":"SICE Annual Conference 2014","ja":"SICE Annual Conference 2014"},"publication_date":"2014-09-12","languages":["eng"],"location":{"en":"Sapporo","ja":"Sapporo"},"description":{"en":"This paper reports effect of optical properties of components for light extraction efficiency of surface mount device (SMD) Light emitting diodes (LEDs). Improvement of light extraction efficiency of SMD LEDs is very important because SMD LEDs are used for various electronic instruments. In particular, side view (SV) LEDs are used for a back light of a liquid crystal display (LCD) widely. A cavity of SV LED packaging (PKG) is narrower and frequency of reflection of light is higher than those of general square SMD LED PKG. Therefore, light extraction efficiency of a SV LED is affected by optical properties of components intensively. In the paper, effect of reflection methods of a PKG resin and silver-plating of a lead frame (L/F) is investigated with using ray tracing simulation. In addition, simulation results of SV LEDs and of square SMD LEDs are compared.","ja":"This paper reports effect of optical properties of components for light extraction efficiency of surface mount device (SMD) Light emitting diodes (LEDs). Improvement of light extraction efficiency of SMD LEDs is very important because SMD LEDs are used for various electronic instruments. In particular, side view (SV) LEDs are used for a back light of a liquid crystal display (LCD) widely. A cavity of SV LED packaging (PKG) is narrower and frequency of reflection of light is higher than those of general square SMD LED PKG. Therefore, light extraction efficiency of a SV LED is affected by optical properties of components intensively. In the paper, effect of reflection methods of a PKG resin and silver-plating of a lead frame (L/F) is investigated with using ray tracing simulation. In addition, simulation results of SV LEDs and of square SMD LEDs are compared."},"is_international_presentation":true},"priority":"input_data"}
line:28, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378660"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=288381","label":"url"}],"presentation_title":{"en":"Error Analysis of State Approaches in Subspace Identification Methods","ja":"Error Analysis of State Approaches in Subspace Identification Methods"},"presenters":{"en":[{"name":"Ikeda Kenji"}],"ja":[{"name":"池田 建司"}]},"event":{"en":"SICE Annual Conference 2014","ja":"SICE Annual Conference 2014"},"publication_date":"2014-09-12","languages":["eng"],"location":{"en":"Sapporo","ja":"Sapporo"},"description":{"en":"Explicit formulation of dominant parts of the estimation errors of A and C matrices in shift invariance approach and state approach are derived based on a proposing lemma on perturbations to the singular subspaces. In the state approach, two methods are considered: one estimates the state from the left singular subspaces of a certain matrix, while the other estimates the state from the right singular subspaces of the same matrix. It is shown that the estimate in the state approach has an asymptotic bias when the past horizon p is finite, while the estimate in the shift invariance approach is unbiased.","ja":"Explicit formulation of dominant parts of the estimation errors of A and C matrices in shift invariance approach and state approach are derived based on a proposing lemma on perturbations to the singular subspaces. In the state approach, two methods are considered: one estimates the state from the left singular subspaces of a certain matrix, while the other estimates the state from the right singular subspaces of the same matrix. It is shown that the estimate in the state approach has an asymptotic bias when the past horizon p is finite, while the estimate in the shift invariance approach is unbiased."},"is_international_presentation":true},"priority":"input_data"}
line:29, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378661"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=288380","label":"url"}],"presentation_title":{"en":"On the precision of the plant estimates in some subspace identification methods","ja":"On the precision of the plant estimates in some subspace identification methods"},"presenters":{"en":[{"name":"Ikeda Kenji"}],"ja":[{"name":"池田 建司"}]},"event":{"en":"Preprints of the 19th World Congress IFAC","ja":"Preprints of the 19th World Congress IFAC"},"publication_date":"2014-08-28","languages":["eng"],"location":{"en":"Cape Town","ja":"Cape Town"},"description":{"en":"Explicit formulae of dominant parts of the estimation errors of plant A matrix in PI-MOESP, PO-MOESP, and one of N4SID methods are derived based on a proposing lemma on perturbations to the singular subspaces. By considereing a gap between the true and a perturbed singular subspaces instead of the perturbation on the subspace, a simple formulae of the estimation error is obtained. The order of the subordinate terms are also analysed.","ja":"Explicit formulae of dominant parts of the estimation errors of plant A matrix in PI-MOESP, PO-MOESP, and one of N4SID methods are derived based on a proposing lemma on perturbations to the singular subspaces. By considereing a gap between the true and a perturbed singular subspaces instead of the perturbation on the subspace, a simple formulae of the estimation error is obtained. The order of the subordinate terms are also analysed."},"is_international_presentation":true},"priority":"input_data"}
line:30, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378662"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=283517","label":"url"}],"presentation_title":{"en":"Error Analysis of PO-MOESP Algorithm","ja":"Error Analysis of PO-MOESP Algorithm"},"presenters":{"en":[{"name":"Ikeda Kenji"}],"ja":[{"name":"池田 建司"}]},"event":{"en":"21th International Symposium on Mathematical Theory of Networks and Systems (MTNS)","ja":"21th International Symposium on Mathematical Theory of Networks and Systems (MTNS)"},"publication_date":"2014-07-08","languages":["eng"],"location":{"en":"Groningen","ja":"Groningen"},"description":{"en":"Explicit formulae of dominant parts of the estimation errors of A and C matrices in PO-MOESP are derived based on a proposing lemma on perturbations to the singular subspaces. The formulae are derived directly from a slightly modified PO-MOESP algorithm. Based on the formulae, the effect of the weighting matrices in the singular value decomposition is analyzed. It is also shown that the original PO-MOESP method is optimal in a sense that singular values of some matrix in the Frobenius norm of the estimation error are minimized.","ja":"Explicit formulae of dominant parts of the estimation errors of A and C matrices in PO-MOESP are derived based on a proposing lemma on perturbations to the singular subspaces. The formulae are derived directly from a slightly modified PO-MOESP algorithm. Based on the formulae, the effect of the weighting matrices in the singular value decomposition is analyzed. It is also shown that the original PO-MOESP method is optimal in a sense that singular values of some matrix in the Frobenius norm of the estimation error are minimized."},"is_international_presentation":true},"priority":"input_data"}
line:31, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378663"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=272659","label":"url"}],"presentation_title":{"en":"Waiting Blocked-Tree Type Deadlock Detection","ja":"Waiting Blocked-Tree Type Deadlock Detection"},"presenters":{"en":[{"name":"Shimomura Takao"},{"name":"Ikeda Kenji"}],"ja":[{"name":"下村 隆夫"},{"name":"池田 建司"}]},"event":{"en":"Proc. of Science and Information Conference 2013 (SAI2013)","ja":"Proc. of Science and Information Conference 2013 (SAI2013)"},"publication_date":"2013-10-07","languages":["eng"],"promoter":{"en":"The Science and Information Organization","ja":"The Science and Information Organization"},"location":{"en":"London","ja":"London"},"is_international_presentation":true},"priority":"input_data"}
line:32, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378664"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=283469","label":"url"}],"presentation_title":{"en":"Identification of a Hopping Machine Based on a Piecewise Affine Model","ja":"Identification of a Hopping Machine Based on a Piecewise Affine Model"},"presenters":{"en":[{"name":"Kashiwao Tomoaki"},{"name":"Ikeda Kenji"},{"name":"Shimomura Takao"}],"ja":[{"name":"Kashiwao Tomoaki"},{"name":"池田 建司"},{"name":"下村 隆夫"}]},"event":{"en":"SICE Annual Conference 2013","ja":"SICE Annual Conference 2013"},"publication_date":"2013-09-15","languages":["eng"],"promoter":{"en":"The Society of Instrument and Control Engineers","ja":"The Society of Instrument and Control Engineers"},"location":{"en":"Nagoya","ja":"Nagoya"},"description":{"en":"In this study, a hopping machine (HM) is identified as a piecewise affine (PWA) system via estimating a transition time. The HM can be modeled as the PWA model with two types of discrete transitions: one caused by the change between discrete free-fall and spring-mass states and the other caused by inversion of the sign of a nonlinear drag coefficient term owing to air resistance. First, the equation of motion for the HM is obtained considering the nonlinear term in order to analyze those discrete transitions. In addition, the transition times are estimated using a wavelet-based method proposed in our previous papers. Finally, the HM is identified as a piecewise affine auto regressive exogenous (PWARX) model on the basis of the analyzed discrete states.","ja":"In this study, a hopping machine (HM) is identified as a piecewise affine (PWA) system via estimating a transition time. The HM can be modeled as the PWA model with two types of discrete transitions: one caused by the change between discrete free-fall and spring-mass states and the other caused by inversion of the sign of a nonlinear drag coefficient term owing to air resistance. First, the equation of motion for the HM is obtained considering the nonlinear term in order to analyze those discrete transitions. In addition, the transition times are estimated using a wavelet-based method proposed in our previous papers. Finally, the HM is identified as a piecewise affine auto regressive exogenous (PWARX) model on the basis of the analyzed discrete states."},"is_international_presentation":true},"priority":"input_data"}
line:33, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378665"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=275449","label":"url"}],"presentation_title":{"en":"Asymptotic Properties of MOESP-type Methods","ja":"Asymptotic Properties of MOESP-type Methods"},"presenters":{"en":[{"name":"Ikeda Kenji"}],"ja":[{"name":"池田 建司"}]},"event":{"en":"Preprints of ALCOSP and PSYCO 2013","ja":"Preprints of ALCOSP and PSYCO 2013"},"publication_date":"2013-07-03","languages":["eng"],"location":{"en":"Caen","ja":"Caen"},"description":{"en":"Precision of the estimated plant model is often the main interest of system identification. In order to take the predictable part of the noise into account, the noise model is estimated together with the plant model by using ARMAX model. In that case, a model reduction procedure will be required in order to obtain the plant model. On the other hand, the plant model can be estimated directly by using output error (OE) model. In this paper, PI-MOESP method and PO-MOESP method are compared by analysing the signal and noise components of the estimated plant model under the assumption that there are no common poles in the plant and the noise models. The magnitude of the noise component in each method is discussed when the past or future horizon varies and it is shown that there is a possibility that PI-MOESP method gives better performance than PO-MOESP method.","ja":"Precision of the estimated plant model is often the main interest of system identification. In order to take the predictable part of the noise into account, the noise model is estimated together with the plant model by using ARMAX model. In that case, a model reduction procedure will be required in order to obtain the plant model. On the other hand, the plant model can be estimated directly by using output error (OE) model. In this paper, PI-MOESP method and PO-MOESP method are compared by analysing the signal and noise components of the estimated plant model under the assumption that there are no common poles in the plant and the noise models. The magnitude of the noise component in each method is discussed when the past or future horizon varies and it is shown that there is a possibility that PI-MOESP method gives better performance than PO-MOESP method."},"is_international_presentation":true},"priority":"input_data"}
line:34, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378666"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=260642","label":"url"}],"presentation_title":{"en":"AUTOMATIC COURSEWARE TRANSFERS BETWEEN DIFFERENT PLATFORMS","ja":"AUTOMATIC COURSEWARE TRANSFERS BETWEEN DIFFERENT PLATFORMS"},"presenters":{"en":[{"name":"Shimomura Takao"},{"name":"Ikeda Kenji"},{"name":"Adriano Montanaro"}],"ja":[{"name":"下村 隆夫"},{"name":"池田 建司"},{"name":"Adriano Montanaro"}]},"event":{"en":"Proc. of 6th International Technology, Education and Development Conference (INTED2013)","ja":"Proc. of 6th International Technology, Education and Development Conference (INTED2013)"},"publication_date":"2013-03","languages":["eng"],"promoter":{"en":"International Association of Technology, Education and Development","ja":"International Association of Technology, Education and Development"},"location":{"en":"Valencia, SPAIN","ja":"Valencia, SPAIN"},"is_international_presentation":true},"priority":"input_data"}
line:35, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378667"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=249888","label":"url"}],"presentation_title":{"en":"Extensible Web-based Learning Architecture","ja":"Extensible Web-based Learning Architecture"},"presenters":{"en":[{"name":"Shimomura Takao"},{"name":"Ikeda Kenji"}],"ja":[{"name":"下村 隆夫"},{"name":"池田 建司"}]},"event":{"en":"Proc. of the 2012 International Conference on Software Engineering Research and Practice (SERP'12)","ja":"Proc. of the 2012 International Conference on Software Engineering Research and Practice (SERP'12)"},"publication_date":"2012-07-16","languages":["eng"],"promoter":{"en":"World Academy of Science","ja":"World Academy of Science"},"location":{"en":"Las Vegas","ja":"Las Vegas"},"is_international_presentation":true},"priority":"input_data"}
line:36, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378668"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=250188","label":"url"}],"presentation_title":{"en":"Asymptotic Properties of BCSS Method in Closed Loop Environment","ja":"Asymptotic Properties of BCSS Method in Closed Loop Environment"},"presenters":{"en":[{"name":"Ikeda Kenji"},{"name":"Hiroshi Oku"}],"ja":[{"name":"池田 建司"},{"name":"奥 宏史"}]},"event":{"en":"Preprints of the 16th IFAC Symposium on System Identification","ja":"Preprints of the 16th IFAC Symposium on System Identification"},"publication_date":"2012-07-12","languages":["eng"],"promoter":{"en":"The International Federation of Automatic Control","ja":"The International Federation of Automatic Control"},"location":{"en":"Brussels","ja":"Brussels"},"description":{"en":"Bias compensated state space model identification method in closed loop environment (CL-BCSS) is introduced. The noise is assumed to be a 0 mean colored noise. It is also assumed that the reference input is a white Gaussian process uncorrelated to the noise. Signal and noise components of a certain matrix in the proposed method and CL-MOESP method are analyzed and compared. It is shown that CL-BCSS method corresponds to CL-MOESP method with infinite past horizon.","ja":"Bias compensated state space model identification method in closed loop environment (CL-BCSS) is introduced. The noise is assumed to be a 0 mean colored noise. It is also assumed that the reference input is a white Gaussian process uncorrelated to the noise. Signal and noise components of a certain matrix in the proposed method and CL-MOESP method are analyzed and compared. It is shown that CL-BCSS method corresponds to CL-MOESP method with infinite past horizon."},"is_international_presentation":true},"priority":"input_data"}
line:37, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378669"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=243332","label":"url"}],"presentation_title":{"en":"GAME-ORIENTED STIMULATING E-LEARNING","ja":"GAME-ORIENTED STIMULATING E-LEARNING"},"presenters":{"en":[{"name":"Shimomura Takao"},{"name":"Ikeda Kenji"},{"name":"Adriano Montanaro"}],"ja":[{"name":"下村 隆夫"},{"name":"池田 建司"},{"name":"Adriano Montanaro"}]},"event":{"en":"Proc. of 6th International Technology, Education and Development Conference (INTED2012)","ja":"Proc. of 6th International Technology, Education and Development Conference (INTED2012)"},"publication_date":"2012-03-05","languages":["eng"],"promoter":{"en":"International Association of Technology, Education and Development","ja":"International Association of Technology, Education and Development"},"location":{"en":"Valencia, Spain","ja":"Valencia, Spain"},"is_international_presentation":true},"priority":"input_data"}
line:38, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378670"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=241926","label":"url"}],"presentation_title":{"en":"Tag Command-based Automatic Trouble Diagnosis for Computer Administration","ja":"Tag Command-based Automatic Trouble Diagnosis for Computer Administration"},"presenters":{"en":[{"name":"Shimomura Takao"},{"name":"Ikeda Kenji"}],"ja":[{"name":"下村 隆夫"},{"name":"池田 建司"}]},"event":{"en":"the 5-th International Conference on New Trends in Information Science and Service Science (NISS2011)","ja":"the 5-th International Conference on New Trends in Information Science and Service Science (NISS2011)"},"publication_date":"2011-10-24","languages":["eng"],"promoter":{"en":"IEEE","ja":"IEEE"},"location":{"en":"Macao","ja":"Macao"},"is_international_presentation":true},"priority":"input_data"}
line:39, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378671"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=240383","label":"url"}],"presentation_title":{"en":"Linear Approximation Model for Snake Robots and its Application","ja":"Linear Approximation Model for Snake Robots and its Application"},"presenters":{"en":[{"name":"Ikeda Kenji"},{"name":"Hatanaka Yoko"},{"name":"Shimomura Takao"}],"ja":[{"name":"池田 建司"},{"name":"畑中 揚子"},{"name":"下村 隆夫"}]},"event":{"en":"Proc. of SICE Annual Conference 2011","ja":"Proc. of SICE Annual Conference 2011"},"publication_date":"2011-09-17","languages":["eng"],"location":{"en":"Tokyo","ja":"Tokyo"},"description":{"en":"This paper proposes a modeling method of snake robots and analyzes the obtained model. Regarding the snake robot as a periodic system, a discrete-time linearized approximation model is obtained based on lifting technique and Fourier series expansion. PI-MOESP type subspace model identification method is applied for obtaining the model. Hankel singular values of the obtained model are analyzed and some remarks are given for the selection of the control input.","ja":"This paper proposes a modeling method of snake robots and analyzes the obtained model. Regarding the snake robot as a periodic system, a discrete-time linearized approximation model is obtained based on lifting technique and Fourier series expansion. PI-MOESP type subspace model identification method is applied for obtaining the model. Hankel singular values of the obtained model are analyzed and some remarks are given for the selection of the control input."},"is_international_presentation":true},"priority":"input_data"}
line:40, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378672"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=240384","label":"url"}],"presentation_title":{"en":"A Design of the Scale Parameter of Wavelet Transformation for the Estimation of Transition Time in PWL Systems","ja":"A Design of the Scale Parameter of Wavelet Transformation for the Estimation of Transition Time in PWL Systems"},"presenters":{"en":[{"name":"Kashiwao Tomoaki"},{"name":"Ikeda Kenji"},{"name":"Shimomura Takao"}],"ja":[{"name":"Kashiwao Tomoaki"},{"name":"池田 建司"},{"name":"下村 隆夫"}]},"event":{"en":"Proc. of SICE Annual Conference 2011","ja":"Proc. of SICE Annual Conference 2011"},"publication_date":"2011-09-14","languages":["eng"],"location":{"en":"Tokyo","ja":"Tokyo"},"description":{"en":"This paper proposes a method to determine an appropriate scale parameter of wavelet transform for the estimation of transition time of the Piecewise Linear (PWL) systems by using wavelet analysis. Precision of the estimation of transition time depends on the scale parameter of wavelet transform under noisy environment. Effect of the noise on the estimation of transition time is shown under the assumption of Gaussian random noise in a numerical example. Appropriate range of the scale parameterof wavelet transform is determined by using quantified effect of the noise and effectiveness of the method is illustrated by numerical experiments.","ja":"This paper proposes a method to determine an appropriate scale parameter of wavelet transform for the estimation of transition time of the Piecewise Linear (PWL) systems by using wavelet analysis. Precision of the estimation of transition time depends on the scale parameter of wavelet transform under noisy environment. Effect of the noise on the estimation of transition time is shown under the assumption of Gaussian random noise in a numerical example. Appropriate range of the scale parameterof wavelet transform is determined by using quantified effect of the noise and effectiveness of the method is illustrated by numerical experiments."},"is_international_presentation":true},"priority":"input_data"}
line:41, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378673"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=238731","label":"url"}],"presentation_title":{"en":"Asymptotic Properties of Bias Compensated State Space Model Identification Method","ja":"Asymptotic Properties of Bias Compensated State Space Model Identification Method"},"presenters":{"en":[{"name":"Ikeda Kenji"},{"name":"Oku Hiroshi"}],"ja":[{"name":"池田 建司"},{"name":"Oku Hiroshi"}]},"event":{"en":"Preprints of the 18th IFAC World Congress","ja":"Preprints of the 18th IFAC World Congress"},"publication_date":"2011-08","languages":["eng"],"location":{"en":"Milan, Italy","ja":"Milan, Italy"},"description":{"en":"The authors proposes a bias-compensated state space model identification (BCSS) method in order to relax the order of the persistent excitation (PE) condition. Most of the subspace identification methods utilize instrumental variable (IV) to obtain an unbiased estimate while the proposed method introduces a bias compensation technique to the Ordinary MOESP type method. In this paper, S/N ratios of certain matrices in the proposed method and the PI-MOESP method are analyzed and compared. It is shown that the S/N ratio in the proposed method is better than that in the PI-MOESP method especially when a pole of the plant is near 1 and the number of the block rows of the IV matrix is small.","ja":"The authors proposes a bias-compensated state space model identification (BCSS) method in order to relax the order of the persistent excitation (PE) condition. Most of the subspace identification methods utilize instrumental variable (IV) to obtain an unbiased estimate while the proposed method introduces a bias compensation technique to the Ordinary MOESP type method. In this paper, S/N ratios of certain matrices in the proposed method and the PI-MOESP method are analyzed and compared. It is shown that the S/N ratio in the proposed method is better than that in the PI-MOESP method especially when a pole of the plant is near 1 and the number of the block rows of the IV matrix is small."},"is_international_presentation":true},"priority":"input_data"}
line:42, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378674"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=214221","label":"url"}],"presentation_title":{"en":"BCLS Method for the Estimation of Continuous-Time Models in Closed Loop Environment","ja":"閉ループ環境における連続時間モデル同定のためのバイアス補償型最小二乗法"},"presenters":{"en":[{"name":"Ikeda Kenji"},{"name":"Mogami Yoshio"},{"name":"Shimomura Takao"}],"ja":[{"name":"池田 建司"},{"name":"最上 義夫"},{"name":"下村 隆夫"}]},"event":{"en":"Proceedings of 2010 IEEE International Conference on Control Applications","ja":"Proceedings of 2010 IEEE International Conference on Control Applications"},"publication_date":"2010-09-09","location":{"en":"Yokohama","ja":"横浜"},"description":{"en":"This paper proposes a bias-compensated least squares (BCLS) method for a continuous-time model estimation in closed loop environment. The feedback controller is assumed to be linear time invariant discrete-time system and the feedback system is assumed to be asymptotically stable. It is also assumed that the control input is a zeroth order hold signal. The aim of the proposed method is to reduce the computational cost which will be required for the conventional method.","ja":"本論文では閉ループ環境における連続時間モデル同定のためのバイアス補償型最小二乗法を提案する．フィードバック補償器は線形時不変な離散時間系で，閉ループ系は漸近安定とする．また，制御入力は0次ホールドされた信号と仮定する．提案手法の目的は，従来法で必要となった数値計算のコストを減らすことである．"},"is_international_presentation":true},"priority":"input_data"}
line:43, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378675"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=213993","label":"url"}],"presentation_title":{"en":"Bias Compensated State Space Identification Method in Closed Loop Environment","ja":"Bias Compensated State Space Identification Method in Closed Loop Environment"},"presenters":{"en":[{"name":"Ikeda Kenji"},{"name":"Mogami Yoshio"},{"name":"Shimomura Takao"}],"ja":[{"name":"池田 建司"},{"name":"最上 義夫"},{"name":"下村 隆夫"}]},"event":{"en":"Proceedings of IFAC ALCOSP 2010","ja":"Proceedings of IFAC ALCOSP 2010"},"publication_date":"2010-08-27","languages":["eng"],"location":{"en":"Antalya, Turkey","ja":"Antalya, Turkey"},"description":{"en":"A method of bias compensation in subspace identification method in closed loop environment is proposed. The noise is assumed to be a 0 mean colored noise and is assumed to be uncorrelated with the reference input. The covariance matrix of the noise is estimated directly from the residuals instead of estimating the noise model. The proposed method becomes an iterative algorithm and it is analyzed that the proposing method achieves 2nd order convergence.","ja":"A method of bias compensation in subspace identification method in closed loop environment is proposed. The noise is assumed to be a 0 mean colored noise and is assumed to be uncorrelated with the reference input. The covariance matrix of the noise is estimated directly from the residuals instead of estimating the noise model. The proposed method becomes an iterative algorithm and it is analyzed that the proposing method achieves 2nd order convergence."},"is_international_presentation":true},"priority":"input_data"}
line:44, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378676"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=213983","label":"url"}],"presentation_title":{"en":"An Approach to GA-driven Automatic Refactoring based on Design Patterns","ja":"An Approach to GA-driven Automatic Refactoring based on Design Patterns"},"presenters":{"en":[{"name":"Shimomura Takao"},{"name":"Ikeda Kenji"},{"name":"Muneo Takahashi"}],"ja":[{"name":"下村 隆夫"},{"name":"池田 建司"},{"name":"Muneo Takahashi"}]},"event":{"en":"2010 Fifth International Conference on Software Engineering Advances","ja":"2010 Fifth International Conference on Software Engineering Advances"},"publication_date":"2010-08-23","languages":["eng"],"promoter":{"en":"International Academy, Research, and Industry Association","ja":"International Academy, Research, and Industry Association"},"location":{"en":"Nice","ja":"Nice"},"is_international_presentation":true},"priority":"input_data"}
line:45, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378677"},"force":{"see_also":[{"@id":"http://www.sice.or.jp/sice2010/","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=213789","label":"url"}],"presentation_title":{"en":"Estimation of Continuous-time Nonlinear Systems by using the Unscented Kalman Filter","ja":"Estimation of Continuous-time Nonlinear Systems by using the Unscented Kalman Filter"},"presenters":{"en":[{"name":"Zheng Min"},{"name":"Ikeda Kenji"},{"name":"Shimomura Takao"}],"ja":[{"name":"鄭 敏"},{"name":"池田 建司"},{"name":"下村 隆夫"}]},"event":{"en":"Proc. of SICE Annual Conference 2010","ja":"Proc. of SICE Annual Conference 2010"},"publication_date":"2010-08-20","languages":["eng"],"location":{"en":"Taipei","ja":"Taipei"},"description":{"en":"This paper proposes a continuous-time model estimation method by using the Unscented Kalman Filter (UKF) from the sampled I/O data, in which the plant parameters as well as the initial state are estimated. The initial state is estimated based on a backward system of the plant, and the parameters are estimated by using the iterated UKF, which repeats the estimation of the forward system and the backward system alternately. In order to demonstrate the effectiveness of the proposed method, the rotary pendulum is provided to estimate the parameters of the continuous-time nonlinear system.","ja":"This paper proposes a continuous-time model estimation method by using the Unscented Kalman Filter (UKF) from the sampled I/O data, in which the plant parameters as well as the initial state are estimated. The initial state is estimated based on a backward system of the plant, and the parameters are estimated by using the iterated UKF, which repeats the estimation of the forward system and the backward system alternately. In order to demonstrate the effectiveness of the proposed method, the rotary pendulum is provided to estimate the parameters of the continuous-time nonlinear system."},"is_international_presentation":true},"priority":"input_data"}
line:46, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378678"},"force":{"see_also":[{"@id":"http://www.sice.or.jp/sice2010/","label":"url"},{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=213788","label":"url"}],"presentation_title":{"en":"Estimation of a Transition Time in Piecewise Linear Systems","ja":"Estimation of a Transition Time in Piecewise Linear Systems"},"presenters":{"en":[{"name":"Ikeda Kenji"},{"name":"Kashiwao Tomoaki"},{"name":"Shimomura Takao"}],"ja":[{"name":"池田 建司"},{"name":"柏尾 知明"},{"name":"下村 隆夫"}]},"event":{"en":"Proc. of SICE Annual Conference 2010","ja":"Proc. of SICE Annual Conference 2010"},"publication_date":"2010-08-19","languages":["eng"],"location":{"en":"Taipei","ja":"Taipei"},"description":{"en":"This paper proposes an estimation method of the transition time of piecewise linear (PWL) systems by using wavelet analysis. A definition of detectability of transitions is proposed in advance and its necessary and sufficient condition is presented which gives an insight how to estimate an transition time. The proposing method does not utilize the parameters of the plant model but utilizes a characteristic pattern of the wavelet transformation of the output signal around the transition time.","ja":"This paper proposes an estimation method of the transition time of piecewise linear (PWL) systems by using wavelet analysis. A definition of detectability of transitions is proposed in advance and its necessary and sufficient condition is presented which gives an insight how to estimate an transition time. The proposing method does not utilize the parameters of the plant model but utilizes a characteristic pattern of the wavelet transformation of the output signal around the transition time."},"is_international_presentation":true},"priority":"input_data"}
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line:69, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378701"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=152600","label":"url"}],"presentation_title":{"en":"Visual Programming for Web Applications that Use HTML Frame Facilities","ja":"Visual Programming for Web Applications that Use HTML Frame Facilities"},"presenters":{"en":[{"name":"Shimomura Takao"},{"name":"Ikeda Kenji"},{"name":"Quan Liang Chen"},{"name":"Nhor Sok Lang"},{"name":"Muneo Takahashi"}],"ja":[{"name":"下村 隆夫"},{"name":"池田 建司"},{"name":"Quan Liang Chen"},{"name":"Nhor Sok Lang"},{"name":"Muneo Takahashi"}]},"event":{"en":"Proceedings of International Conference on Computer Engineering and Applications","ja":"Proceedings of International Conference on Computer Engineering and Applications"},"publication_date":"2007-01-17","invited":true,"languages":["eng"],"promoter":{"en":"World Scientific and Engineering Academy and Society","ja":"World Scientific and Engineering Academy and Society"},"location":{"en":"Gold Coast, Australia","ja":"Gold Coast, Australia"},"is_international_presentation":true},"priority":"input_data"}
line:70, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378702"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=147889","label":"url"}],"presentation_title":{"en":"Parameter estimation of rotary inverted pendulum based on unscented Kalman filter","ja":"Parameter estimation of rotary inverted pendulum based on unscented Kalman filter"},"presenters":{"en":[{"name":"Zheng Min"},{"name":"Ikeda Kenji"},{"name":"Shimomura Takao"}],"ja":[{"name":"Zheng Min"},{"name":"池田 建司"},{"name":"下村 隆夫"}]},"event":{"en":"Proc. of SICE-ICCAS 2006","ja":"Proc. of SICE-ICCAS 2006"},"publication_date":"2006-10-21","languages":["eng"],"location":{"en":"Busan","ja":"Busan"},"description":{"en":"The Unscented Kalman Filter (UKF) is a nonlinear estimation method, and has been widely applied in nonlinear control applications. However, if covariance of the initial value is unknown, the estimated value does not converge to the true value in general. To improve the result of estimation, the iterated UKF is propsed as a method to repeat the estimation by redefining the initial value of the filter. Its effectiveness is demonstrated by using the Rotary Inverted Pendulum(RIP) to estimate the parameters of a continuous-time nonlinear system.","ja":"The Unscented Kalman Filter (UKF) is a nonlinear estimation method, and has been widely applied in nonlinear control applications. However, if covariance of the initial value is unknown, the estimated value does not converge to the true value in general. To improve the result of estimation, the iterated UKF is propsed as a method to repeat the estimation by redefining the initial value of the filter. Its effectiveness is demonstrated by using the Rotary Inverted Pendulum(RIP) to estimate the parameters of a continuous-time nonlinear system."},"is_international_presentation":true},"priority":"input_data"}
line:71, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378703"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=147888","label":"url"}],"presentation_title":{"en":"Continuous-time model identification by using adaptive observer --- Estimation of the initial state","ja":"Continuous-time model identification by using adaptive observer --- Estimation of the initial state"},"presenters":{"en":[{"name":"Ikeda Kenji"},{"name":"Mogami Yoshio"},{"name":"Shimomura Takao"}],"ja":[{"name":"池田 建司"},{"name":"最上 義夫"},{"name":"下村 隆夫"}]},"event":{"en":"Proc. of SICE-ICCAS 2006","ja":"Proc. of SICE-ICCAS 2006"},"publication_date":"2006-10-19","languages":["eng"],"location":{"en":"Busan","ja":"Busan"},"description":{"en":"Importance of the continuous-time model identification is increasing as the computer becomes faster. The main difference between the contiuous-time model identification and the discrete-time identification lies not only in the information loss incurred by sampling but also in that the transient term must be taken into account in the continous-time identification. This paper proposes a continous-time model estimation method from sampled I/O data with the ZOH input assumption. The initial state of the plant is estimated by using a backward system of the plant. An upper bound of the plant degree is assumed to be known. Numerical example shows that the proposed method performs well as the conventional method with an initial state estimation.","ja":"Importance of the continuous-time model identification is increasing as the computer becomes faster. The main difference between the contiuous-time model identification and the discrete-time identification lies not only in the information loss incurred by sampling but also in that the transient term must be taken into account in the continous-time identification. This paper proposes a continous-time model estimation method from sampled I/O data with the ZOH input assumption. The initial state of the plant is estimated by using a backward system of the plant. An upper bound of the plant degree is assumed to be known. Numerical example shows that the proposed method performs well as the conventional method with an initial state estimation."},"is_international_presentation":true},"priority":"input_data"}
line:72, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378704"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=145199","label":"url"}],"presentation_title":{"en":"Parameter convergence of a continuous-time model estimation method by using adaptive observer","ja":"Parameter convergence of a continuous-time model estimation method by using adaptive observer"},"presenters":{"en":[{"name":"Ikeda Kenji"},{"name":"Mogami Yoshio"},{"name":"Shimomura Takao"}],"ja":[{"name":"池田 建司"},{"name":"最上 義夫"},{"name":"下村 隆夫"}]},"event":{"en":"Proceedings of 17th International Symposium onMathematical Theory of Networks and Systems","ja":"Proceedings of 17th International Symposium onMathematical Theory of Networks and Systems"},"publication_date":"2006-07-24","languages":["eng"],"location":{"en":"Kyoto","ja":"Kyoto"},"description":{"en":"In this paper, a continous-time model estimation method by using adaptive observer from sampled I/O data with the ZOH input assumption is considered. The proposed method utilizes modified state variable filters in order to estimate the intersample signals. A sufficient condition for the exponential convergence of the parameter estimate is analyzed.","ja":"In this paper, a continous-time model estimation method by using adaptive observer from sampled I/O data with the ZOH input assumption is considered. The proposed method utilizes modified state variable filters in order to estimate the intersample signals. A sufficient condition for the exponential convergence of the parameter estimate is analyzed."},"is_international_presentation":true},"priority":"input_data"}
line:73, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378705"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=139778","label":"url"}],"presentation_title":{"en":"Discrete-time state variable filters for the estimation of a continuous-time model","ja":"Discrete-time state variable filters for the estimation of a continuous-time model"},"presenters":{"en":[{"name":"Ikeda Kenji"},{"name":"Mogami Yoshio"},{"name":"Shimomura Takao"}],"ja":[{"name":"池田 建司"},{"name":"最上 義夫"},{"name":"下村 隆夫"}]},"event":{"en":"Proceedings of the 14th IFAC Symposium on System Identification","ja":"Proceedings of the 14th IFAC Symposium on System Identification"},"publication_date":"2006-03-30","languages":["eng"],"promoter":{"en":"International Federation of Automatic Control","ja":"International Federation of Automatic Control"},"location":{"en":"Newcastle, Australia","ja":"Newcastle, Australia"},"description":{"en":"This paper proposes a continuous-time model estimation method from sampled I/O data with the ZOH input assumption. State variable filters are modified in order to estimate the intersample signals by using a previously obtained parameter estimate. A sufficient condition for the parameter convergence and the bias of the estimated parameters are analyzed.","ja":"This paper proposes a continuous-time model estimation method from sampled I/O data with the ZOH input assumption. State variable filters are modified in order to estimate the intersample signals by using a previously obtained parameter estimate. A sufficient condition for the parameter convergence and the bias of the estimated parameters are analyzed."},"is_international_presentation":true},"priority":"input_data"}
line:74, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378706"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=123311","label":"url"}],"presentation_title":{"en":"Continuous-Time Model Identification by using Adaptive Observer --- On the reduction of the computational cost","ja":"Continuous-Time Model Identification by using Adaptive Observer --- On the reduction of the computational cost"},"presenters":{"en":[{"name":"Ikeda Kenji"},{"name":"Mogami Yoshio"},{"name":"Shimomura Takao"}],"ja":[{"name":"池田 建司"},{"name":"最上 義夫"},{"name":"下村 隆夫"}]},"event":{"en":"Proceedings of SICE 2005","ja":"Proceedings of SICE 2005"},"publication_date":"2005-08-08","languages":["eng"],"promoter":{"en":"The Society of Instrument and Control Engineers","ja":"The Society of Instrument and Control Engineers"},"location":{"en":"Okayama","ja":"Okayama"},"description":{"en":"The authors have proposed a continuous-time model identification method by using adaptive observer which estimates the intersample output and the initial state of the plant as well as the plant parameters from sampled I/O data. In the previously proposed method, a numerical simulation technique such as Runget-Kutta method is used in order to estimate the intersample signals. However, the continuous-time simulation requires the high computational cost compared to the discrete-time simulation. In this paper, the discrete-time simulation technique is adopted even for the continuous-time state variable filters in order to reduce the computational cost.","ja":"The authors have proposed a continuous-time model identification method by using adaptive observer which estimates the intersample output and the initial state of the plant as well as the plant parameters from sampled I/O data. In the previously proposed method, a numerical simulation technique such as Runget-Kutta method is used in order to estimate the intersample signals. However, the continuous-time simulation requires the high computational cost compared to the discrete-time simulation. In this paper, the discrete-time simulation technique is adopted even for the continuous-time state variable filters in order to reduce the computational cost."},"is_international_presentation":true},"priority":"input_data"}
line:75, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378707"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=121004","label":"url"}],"presentation_title":{"en":"Continuous-Time Model Identification using Adaptive Observers --- On the Selection of State Variable Filters","ja":"Continuous-Time Model Identification using Adaptive Observers --- On the Selection of State Variable Filters"},"presenters":{"en":[{"name":"Ikeda Kenji"},{"name":"Mogami Yoshio"},{"name":"Shimomura Takao"}],"ja":[{"name":"池田 建司"},{"name":"最上 義夫"},{"name":"下村 隆夫"}]},"event":{"en":"Proceedings of the 24th IASTED International Conference Modelling, Identification, and Control","ja":"Proceedings of the 24th IASTED International Conference Modelling, Identification, and Control"},"publication_date":"2005-02-16","languages":["eng"],"location":{"en":"Innsbruck","ja":"Innsbruck"},"is_international_presentation":true},"priority":"input_data"}
line:76, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378708"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=97593","label":"url"}],"presentation_title":{"en":"A sufficient condition for the convergence of adaptive observer in continuous-time model identification","ja":"A sufficient condition for the convergence of adaptive observer in continuous-time model identification"},"presenters":{"en":[{"name":"Ikeda Kenji"},{"name":"Mogami Yoshio"},{"name":"Shimomura Takao"}],"ja":[{"name":"池田 建司"},{"name":"最上 義夫"},{"name":"下村 隆夫"}]},"event":{"en":"Proceedings of IFAC Workshop on Adaptive and Learning in Control and Signal Processing","ja":"Proceedings of IFAC Workshop on Adaptive and Learning in Control and Signal Processing"},"publication_date":"2004-08-30","languages":["eng"],"promoter":{"en":"International Federation of Automatic Control","ja":"International Federation of Automatic Control"},"location":{"en":"Yokohama","ja":"Yokohama"},"description":{"en":"This paper proposes a new method to identify a continuous-time model from sampled I/O data by using an adaptive observer. The boundedness of the parameter estimate and the exponential convergence of the parameter estimation error to 0 under the assumption of Persistently Exciting(PE) signals are guaranteed. In order to identify the plant from a finite number of I/O data, an adaptive observer for a backward system is also proposed. In noise-free cases, the magninude of the parameter estimation error can be made arbitrarily small if the sampling period is smaller than a certain value.","ja":"This paper proposes a new method to identify a continuous-time model from sampled I/O data by using an adaptive observer. The boundedness of the parameter estimate and the exponential convergence of the parameter estimation error to 0 under the assumption of Persistently Exciting(PE) signals are guaranteed. In order to identify the plant from a finite number of I/O data, an adaptive observer for a backward system is also proposed. In noise-free cases, the magninude of the parameter estimation error can be made arbitrarily small if the sampling period is smaller than a certain value."},"is_international_presentation":true},"priority":"input_data"}
line:77, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378709"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=84023","label":"url"}],"presentation_title":{"en":"Continuous-Time Model Identification by using Fast Adaptive Observer","ja":"Continuous-Time Model Identification by using Fast Adaptive Observer"},"presenters":{"en":[{"name":"Ikeda Kenji"},{"name":"Mogami Yoshio"},{"name":"Shimomura Takao"}],"ja":[{"name":"池田 建司"},{"name":"最上 義夫"},{"name":"下村 隆夫"}]},"event":{"en":"Proceedings Sixteenth International Symposium on Mathematical Theory of Networks and Systems","ja":"Proceedings Sixteenth International Symposium on Mathematical Theory of Networks and Systems"},"publication_date":"2004-07-05","languages":["eng"],"location":{"en":"Leuven","ja":"Leuven"},"description":{"en":"This paper introduces a new method to identify a continuous-time model from sampled I/O data by using an adaptive observer. The adaptive algorithm is based on Newton-like method that the convergence of the parameter is considereably improved compared to the steepest descent method. In order to identify the plant from a finite number of I/O data, an adaptive observer for a backward system is also proposed.","ja":"This paper introduces a new method to identify a continuous-time model from sampled I/O data by using an adaptive observer. The adaptive algorithm is based on Newton-like method that the convergence of the parameter is considereably improved compared to the steepest descent method. In order to identify the plant from a finite number of I/O data, an adaptive observer for a backward system is also proposed."},"is_international_presentation":true},"priority":"input_data"}
line:78, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378710"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=80039","label":"url"}],"presentation_title":{"en":"Multi-objective Design Scheme for Robust I-PD Controller","ja":"Multi-objective Design Scheme for Robust I-PD Controller"},"presenters":{"en":[{"name":"Takanori Tagami"},{"name":"Tohru Kawabe"},{"name":"Ikeda Kenji"}],"ja":[{"name":"田上 隆徳"},{"name":"河辺 徹"},{"name":"池田 建司"}]},"event":{"en":"Proc. of the 23rd IASTED International Conference on Modelling, Identification, and Control","ja":"Proc. of the 23rd IASTED International Conference on Modelling, Identification, and Control"},"publication_date":"2004-02-23","languages":["eng"],"location":{"en":"Grindelwald","ja":"Grindelwald"},"description":{"en":"筆者の一人は, 速応性と振動抑制性を考慮して, 一般化ISEに基づく制御系設計手法を提案している. 一般化ISEは, 出力誤差の2乗積分と出力誤差の微分値の2乗積分の和である. それぞれの項は, 速応性と振動抑制性に関係している. ところが, それらの項をどのような割合で足したものが評価関数としてよいのかは, 事前にはわからない. そこで, 本論文では, それぞれの項の最小化する2目的問題として定式化し, 速応性と振動抑制性のトレードオフをとる設計手法を提案している.","ja":"筆者の一人は, 速応性と振動抑制性を考慮して, 一般化ISEに基づく制御系設計手法を提案している. 一般化ISEは, 出力誤差の2乗積分と出力誤差の微分値の2乗積分の和である. それぞれの項は, 速応性と振動抑制性に関係している. ところが, それらの項をどのような割合で足したものが評価関数としてよいのかは, 事前にはわからない. そこで, 本論文では, それぞれの項の最小化する2目的問題として定式化し, 速応性と振動抑制性のトレードオフをとる設計手法を提案している."},"is_international_presentation":true},"priority":"input_data"}
line:79, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378711"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=79972","label":"url"}],"presentation_title":{"en":"Continuous-Time Model Identification By Using Adaptive Observer --- A case of non-uniform sampling","ja":"Continuous-Time Model Identification By Using Adaptive Observer --- A case of non-uniform sampling"},"presenters":{"en":[{"name":"Ikeda Kenji"},{"name":"Mogami Yoshio"},{"name":"Shimomura Takao"}],"ja":[{"name":"池田 建司"},{"name":"最上 義夫"},{"name":"下村 隆夫"}]},"event":{"en":"Proc. of the 23rd IASTED International Conference Modelling, Identification, and Control","ja":"Proc. of the 23rd IASTED International Conference Modelling, Identification, and Control"},"publication_date":"2004-02-23","languages":["eng"],"location":{"en":"Grindelwald","ja":"Grindelwald"},"description":{"en":"This paper proposed a continuous-time model identification from sampled I/O data by using an adaptive observer in which the output is non-uniformly sampled. The boundedness of the parameter estimate error and the exponential convergence of the parameter estimate error to 0 under the PE assumption are guaranteed. In order to identify the plant from a finite number of I/O data, an adaptive observer of a backward system is also proposed.","ja":"This paper proposed a continuous-time model identification from sampled I/O data by using an adaptive observer in which the output is non-uniformly sampled. The boundedness of the parameter estimate error and the exponential convergence of the parameter estimate error to 0 under the PE assumption are guaranteed. In order to identify the plant from a finite number of I/O data, an adaptive observer of a backward system is also proposed."},"is_international_presentation":true},"priority":"input_data"}
line:80, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378712"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=74549","label":"url"}],"presentation_title":{"en":"Continuous-time model identification by using adaptive observer","ja":"Continuous-time model identification by using adaptive observer"},"presenters":{"en":[{"name":"Ikeda Kenji"},{"name":"Mogami Yoshio"},{"name":"Shimomura Takao"}],"ja":[{"name":"池田 建司"},{"name":"最上 義夫"},{"name":"下村 隆夫"}]},"event":{"en":"Preprints of 13th IFAC Symposium on System Identification","ja":"Preprints of 13th IFAC Symposium on System Identification"},"publication_date":"2003-08-27","languages":["eng"],"promoter":{"en":"International Federation of Automatic Control","ja":"International Federation of Automatic Control"},"location":{"en":"Rotterdam","ja":"Rotterdam"},"description":{"en":"This paper proposes a continuous-time model identification from sampled I/O data by using an adaptive observer. The boundedness of the parameter and the exponential convergence of the parameter estimate error to 0 under the PE assumption are guaranteed. In order to identify the plant from a finite number of the I/O data, an adaptive observer of a backward system is also proposed.","ja":"This paper proposes a continuous-time model identification from sampled I/O data by using an adaptive observer. The boundedness of the parameter and the exponential convergence of the parameter estimate error to 0 under the PE assumption are guaranteed. In order to identify the plant from a finite number of the I/O data, an adaptive observer of a backward system is also proposed."},"is_international_presentation":true},"priority":"input_data"}
line:81, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378713"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=74073","label":"url"}],"presentation_title":{"en":"An Approach to Brain-Image Oriented Programming for Web Applications","ja":"An Approach to Brain-Image Oriented Programming for Web Applications"},"presenters":{"en":[{"name":"Shimomura Takao"},{"name":"Takahashi Muneo"},{"name":"Ikeda Kenji"},{"name":"Mogami Yoshio"}],"ja":[{"name":"下村 隆夫"},{"name":"高橋 宗雄"},{"name":"池田 建司"},{"name":"最上 義夫"}]},"event":{"en":"Proc. of 7th World Multiconference on Systemics, Cybernetics and Informatics","ja":"Proc. of 7th World Multiconference on Systemics, Cybernetics and Informatics"},"publication_date":"2003-07","languages":["eng"],"location":{"en":"Orlando","ja":"Orlando"},"description":{"en":"ユーザが頭に描いたイメージを基にして，プログラムを開発でき，プログラムを構成するコンポーネントの完備性や，コンポーネント間の関係の一貫性をユーザが容易に検証でき，___ 設計の途中でも，ユーザがそれまでに設計したコンポーネントの実行結果を容易に確認できるという特徴をもつイメージ指向プログラミング方式について提案し，アプリケーションを対象として本方式を実現したシステムについて述べる．","ja":"ユーザが頭に描いたイメージを基にして，プログラムを開発でき，プログラムを構成するコンポーネントの完備性や，コンポーネント間の関係の一貫性をユーザが容易に検証でき，___ 設計の途中でも，ユーザがそれまでに設計したコンポーネントの実行結果を容易に確認できるという特徴をもつイメージ指向プログラミング方式について提案し，アプリケーションを対象として本方式を実現したシステムについて述べる．"},"is_international_presentation":true},"priority":"input_data"}
line:82, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378714"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=69577","label":"url"}],"presentation_title":{"en":"Design of robust I-PD controller based on Pareto-optimality with generalized ISE","ja":"Design of robust I-PD controller based on Pareto-optimality with generalized ISE"},"presenters":{"en":[{"name":"Tagami Takanori"},{"name":"Ikeda Kenji"},{"name":"Kawabe Tohru"}],"ja":[{"name":"Tagami Takanori"},{"name":"池田 建司"},{"name":"Kawabe Tohru"}]},"event":{"en":"Proceedings of the 22nd IASTED International Conference on MODELLING, IDENTIFICATION, AND CONTROL","ja":"Proceedings of the 22nd IASTED International Conference on MODELLING, IDENTIFICATION, AND CONTROL"},"publication_date":"2003-02","languages":["eng"],"location":{"en":"Innsbruck","ja":"Innsbruck"},"description":{"en":"先の論文では, 速応性と振動抑制性の2目的最適化問題を, 閉ループ系の極の実部の最大値の最小化, および, 原点から見た虚軸からの角度の最大値の最小化という2つの最小化問題に置き換えて, 2目的問題を解いた. 一方, 筆者の一人はロバスト性を考慮した上で, 速応性と振動抑制性の両方を考慮した制御系設計手法として一般化ISEという評価指標に基づく手法を提案している. そこで, 本論文では, 二つの手法の特徴を実際の磁気浮上系を例題にとり, 比較·検討した.","ja":"先の論文では, 速応性と振動抑制性の2目的最適化問題を, 閉ループ系の極の実部の最大値の最小化, および, 原点から見た虚軸からの角度の最大値の最小化という2つの最小化問題に置き換えて, 2目的問題を解いた. 一方, 筆者の一人はロバスト性を考慮した上で, 速応性と振動抑制性の両方を考慮した制御系設計手法として一般化ISEという評価指標に基づく手法を提案している. そこで, 本論文では, 二つの手法の特徴を実際の磁気浮上系を例題にとり, 比較·検討した."},"is_international_presentation":true},"priority":"input_data"}
line:83, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378715"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=69547","label":"url"}],"presentation_title":{"en":"Adaptive Observer of Sampled-Data Systems","ja":"Adaptive Observer of Sampled-Data Systems"},"presenters":{"en":[{"name":"Ikeda Kenji"},{"name":"Mogami Yoshio"},{"name":"Shimomura Takao"}],"ja":[{"name":"池田 建司"},{"name":"最上 義夫"},{"name":"下村 隆夫"}]},"event":{"en":"Proceedings of the 22nd IASTED International Conference MODELLING, IDENTIFICATION, AND CONTROL","ja":"Proceedings of the 22nd IASTED International Conference MODELLING, IDENTIFICATION, AND CONTROL"},"publication_date":"2003-02","languages":["eng"],"location":{"en":"Innsbruck","ja":"Innsbruck"},"description":{"en":"与えられたサンプル値入出力データから対象の連続時間モデルを直接同定する適応観測器を提案し, その収束性いついて解析した. サンプル点間の応答を得られたプラントモデルに基づいて推定し, また, 推定された連続時間応答からプラントモデルを推定するという繰り返し型のアルゴリズムである.","ja":"与えられたサンプル値入出力データから対象の連続時間モデルを直接同定する適応観測器を提案し, その収束性いついて解析した. サンプル点間の応答を得られたプラントモデルに基づいて推定し, また, 推定された連続時間応答からプラントモデルを推定するという繰り返し型のアルゴリズムである."},"is_international_presentation":true},"priority":"input_data"}
line:84, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378716"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=69576","label":"url"}],"presentation_title":{"en":"Design of robust I-PD controller based on multi-objective genetic algorithm with local search techniques","ja":"Design of robust I-PD controller based on multi-objective genetic algorithm with local search techniques"},"presenters":{"en":[{"name":"Tagami Takanori"},{"name":"Ikeda Kenji"}],"ja":[{"name":"Tagami Takanori"},{"name":"池田 建司"}]},"event":{"en":"Proceedings of the International Symposium on Nonlinear Theory and Its Applications","ja":"Proceedings of the International Symposium on Nonlinear Theory and Its Applications"},"publication_date":"2002-10","languages":["eng"],"location":{"en":"Xi'an","ja":"Xi'an"},"description":{"en":"先に提案したロバストI-PD制御器設計法は, 速応性と振動抑制性を制御系の整定時間と減衰比の改善問題と捉え, さらに, 制御系の極配置問題に置き換えてから遺伝的アルゴリズムによって最適解を求めるという手法である. 最適解探索アルゴリズムにおいて, 収束性を改善するために, 局所探索手法を導入した.","ja":"先に提案したロバストI-PD制御器設計法は, 速応性と振動抑制性を制御系の整定時間と減衰比の改善問題と捉え, さらに, 制御系の極配置問題に置き換えてから遺伝的アルゴリズムによって最適解を求めるという手法である. 最適解探索アルゴリズムにおいて, 収束性を改善するために, 局所探索手法を導入した."},"is_international_presentation":true},"priority":"input_data"}
line:85, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378717"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=69575","label":"url"}],"presentation_title":{"en":"Identification of the jump in switched linear systems","ja":"Identification of the jump in switched linear systems"},"presenters":{"en":[{"name":"Ikeda Kenji"}],"ja":[{"name":"池田 建司"}]},"event":{"en":"Proceedings of the International Symposium on Nonlinear Theory and Its Application","ja":"Proceedings of the International Symposium on Nonlinear Theory and Its Application"},"publication_date":"2002-10","languages":["eng"],"location":{"en":"Xi'an","ja":"Xi'an"},"description":{"en":"ハイブリッドシステムの一種である区分線形システムの動特性を同定する場合, 連続的な動特性だけでなく, 離散的な状態遷移についても同定する必要がある. 本論文では, 離散的な状態遷移が起こる時刻は既知として, 離散的な状態遷移と連続的な動特性を同時に推定する手法を提案し, 数値例によって, 有効性を検証した.","ja":"ハイブリッドシステムの一種である区分線形システムの動特性を同定する場合, 連続的な動特性だけでなく, 離散的な状態遷移についても同定する必要がある. 本論文では, 離散的な状態遷移が起こる時刻は既知として, 離散的な状態遷移と連続的な動特性を同時に推定する手法を提案し, 数値例によって, 有効性を検証した."},"is_international_presentation":true},"priority":"input_data"}
line:86, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378718"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=23020","label":"url"}],"presentation_title":{"en":"A Design of Robust I-PD Controller Based on Genetic Algorithm","ja":"A Design of Robust I-PD Controller Based on Genetic Algorithm"},"presenters":{"en":[{"name":"Tagami Takanori"},{"name":"Ikeda Kenji"}],"ja":[{"name":"田上 隆徳"},{"name":"池田 建司"}]},"event":{"en":"Proceedings of the IASTED International Conference on MODELLING, IDENTIFICATION, AND CONTROL","ja":"Proceedings of the IASTED International Conference on MODELLING, IDENTIFICATION, AND CONTROL"},"publication_date":"2002-02-20","languages":["eng"],"promoter":{"en":"The International Association of Science and Technology for Development","ja":"The International Association of Science and Technology for Development"},"location":{"en":"Innsbruck","ja":"Innsbruck"},"description":{"en":"A New design methos of robust I-PD controller based on Genetic Algorithm(GA) is presented. It is defined as a two-objective optimization problem in which an issue of settleing time and damping ratio is translated into a pole assignment problems. The uncertainty of the plant is represented as a polytope of polynomials and a design cost is reduced by using the edge theorem.","ja":"A New design methos of robust I-PD controller based on Genetic Algorithm(GA) is presented. It is defined as a two-objective optimization problem in which an issue of settleing time and damping ratio is translated into a pole assignment problems. The uncertainty of the plant is represented as a polytope of polynomials and a design cost is reduced by using the edge theorem."},"is_international_presentation":true},"priority":"input_data"}
line:87, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378719"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=17566","label":"url"}],"presentation_title":{"en":"Limit Cycle in Fault Tolerant Decentralized Adaptive Control System","ja":"Limit Cycle in Fault Tolerant Decentralized Adaptive Control System"},"presenters":{"en":[{"name":"Ikeda Kenji"}],"ja":[{"name":"池田 建司"}]},"event":{"en":"Proceedings of 2000 International Symposium on Nonlinear Theory and its Applications","ja":"Proceedings of 2000 International Symposium on Nonlinear Theory and its Applications"},"publication_date":"2000-09-18","location":{"en":"Dresden","ja":"Dresden"},"description":{"en":"筆者らが提案している自律分散適応制御において, あるサブシステムが故障したとき, 解軌道のリミットサイクルが, 故障後に別のリミットサイクルに変形することによって, 耐故障性が達成されていることを示した.","ja":"筆者らが提案している自律分散適応制御において, あるサブシステムが故障したとき, 解軌道のリミットサイクルが, 故障後に別のリミットサイクルに変形することによって, 耐故障性が達成されていることを示した."},"is_international_presentation":true},"priority":"input_data"}
line:88, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378720"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=17567","label":"url"}],"presentation_title":{"en":"Autonomous Decentralized Adaptive Control System Using Parameter Projection","ja":"Autonomous Decentralized Adaptive Control System Using Parameter Projection"},"presenters":{"en":[{"name":"Ikeda Kenji"},{"name":"Shin, Seiichi"}],"ja":[{"name":"池田 建司"},{"name":"新 誠一"}]},"event":{"en":"Proceedings of AFSS 2000","ja":"Proceedings of AFSS 2000"},"publication_date":"2000-05","languages":["eng"],"location":{"en":"Tsukuba","ja":"Tsukuba"},"description":{"en":"筆者らが提案している分散型ハイゲイン適応制御は, パラメータ調整則にσ修正法を用いているため, 雑音や外乱が存在しなくても, 出力が0には収束しない場合がある. そこで, パラメータがある範囲内ならばσ修正項を無効にする調整則を提案し, 安定性の解析, 耐故障性を示した. また, σ修正項が無効となる範囲を適切に選ぶことにより, 出力の0への収束性を数値例により確認した.","ja":"筆者らが提案している分散型ハイゲイン適応制御は, パラメータ調整則にσ修正法を用いているため, 雑音や外乱が存在しなくても, 出力が0には収束しない場合がある. そこで, パラメータがある範囲内ならばσ修正項を無効にする調整則を提案し, 安定性の解析, 耐故障性を示した. また, σ修正項が無効となる範囲を適切に選ぶことにより, 出力の0への収束性を数値例により確認した."},"is_international_presentation":true},"priority":"input_data"}
line:89, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378721"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=118428","label":"url"}],"presentation_title":{"en":"Adaptive Stabilization of Any Minimum Phase Plant with Relative Degree n or n+1","ja":"Adaptive Stabilization of Any Minimum Phase Plant with Relative Degree n or n+1"},"presenters":{"en":[{"name":"Ikeda Kenji"},{"name":"Seiichi Shin"}],"ja":[{"name":"池田 建司"},{"name":"Seiichi Shin"}]},"event":{"en":"Preprints of the 11th IFAC Symposium on System Identification","ja":"Preprints of the 11th IFAC Symposium on System Identification"},"publication_date":"1997-07","languages":["eng"],"location":{"en":"Kitakyushu","ja":"Kitakyushu"},"description":{"en":"正実関数には+1,0,-1の相対次数に関する自由度があることを利用して相対次数が正確にわかっていなくても適応的に安定化する適応制御を提案した. 相対次数が-1の伝達関数は非因果的となるため, 本論文では 0 と+1 に相当する場合について安定性を証明した.","ja":"正実関数には+1,0,-1の相対次数に関する自由度があることを利用して相対次数が正確にわかっていなくても適応的に安定化する適応制御を提案した. 相対次数が-1の伝達関数は非因果的となるため, 本論文では 0 と+1 に相当する場合について安定性を証明した."},"is_international_presentation":true},"priority":"input_data"}
line:90, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378722"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=118427","label":"url"}],"presentation_title":{"en":"Fault Tolerant Decentralized Adaptive Control Systems Using Backstepping","ja":"Fault Tolerant Decentralized Adaptive Control Systems Using Backstepping"},"presenters":{"en":[{"name":"Ikeda Kenji"},{"name":"Seiichi Shin"}],"ja":[{"name":"池田 建司"},{"name":"Seiichi Shin"}]},"event":{"en":"Proc. of the 34th IEEE Conf. on Decision and Control","ja":"Proc. of the 34th IEEE Conf. on Decision and Control"},"publication_date":"1995-12","languages":["eng"],"location":{"en":"New Orleans","ja":"New Orleans"},"description":{"en":"Backstepping 法を用いた分散型ハイゲイン適応制御系をサーボ問題へ拡張した. これによって, ステップ目標値, 正弦波, ランプ目標値などへ対応できるようになり, また, 各サブシステムの相対次数がnである場合へ適用可能となった. 耐故障性やオンライン拡張性などのよい性質もそのまま成り立つ.","ja":"Backstepping 法を用いた分散型ハイゲイン適応制御系をサーボ問題へ拡張した. これによって, ステップ目標値, 正弦波, ランプ目標値などへ対応できるようになり, また, 各サブシステムの相対次数がnである場合へ適用可能となった. 耐故障性やオンライン拡張性などのよい性質もそのまま成り立つ."},"is_international_presentation":true},"priority":"input_data"}
line:91, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378723"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=118426","label":"url"}],"presentation_title":{"en":"Decentralized High Gain Adaptive Control System Using Backstepping","ja":"Decentralized High Gain Adaptive Control System Using Backstepping"},"presenters":{"en":[{"name":"Ikeda Kenji"},{"name":"Seiichi Shin"}],"ja":[{"name":"池田 建司"},{"name":"Seiichi Shin"}]},"event":{"en":"Proc. of the 3rd IEEE Symposium on Emerging Technologies and Factory Automation","ja":"Proc. of the 3rd IEEE Symposium on Emerging Technologies and Factory Automation"},"publication_date":"1994-11","languages":["eng"],"location":{"en":"Tokyo","ja":"Tokyo"},"description":{"en":"筆者らが提案している分散型ハイゲイン適応制御は各サブシステムの相対次数が1であるという制約条件が必要であったが, この制約をbackstepping法を用いることによって緩和した.","ja":"筆者らが提案している分散型ハイゲイン適応制御は各サブシステムの相対次数が1であるという制約条件が必要であったが, この制約をbackstepping法を用いることによって緩和した."},"is_international_presentation":true},"priority":"input_data"}
line:92, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378724"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=118425","label":"url"}],"presentation_title":{"en":"Simultaneous Stabilization by Periodically Switching Control","ja":"Simultaneous Stabilization by Periodically Switching Control"},"presenters":{"en":[{"name":"Ikeda Kenji"}],"ja":[{"name":"池田 建司"}]},"event":{"en":"Proc. of the Asian Control Conference","ja":"Proc. of the Asian Control Conference"},"publication_date":"1994-08","languages":["eng"],"location":{"en":"Tokyo","ja":"Tokyo"},"description":{"en":"同一の線形補償器では安定化不可能な2つの対象が与えられたとき, 同じアルゴリズムに基づく制御によって安定化する, 同時安定化問題を考えた. 本論文では, 周期時変補償器を提案し, 安定性の解析を行った.","ja":"同一の線形補償器では安定化不可能な2つの対象が与えられたとき, 同じアルゴリズムに基づく制御によって安定化する, 同時安定化問題を考えた. 本論文では, 周期時変補償器を提案し, 安定性の解析を行った."},"is_international_presentation":true},"priority":"input_data"}
line:93, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378725"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=118424","label":"url"}],"presentation_title":{"en":"Autonomous Decentralized Adaptive Control","ja":"Autonomous Decentralized Adaptive Control"},"presenters":{"en":[{"name":"Seiichi Shin"},{"name":"Ikeda Kenji"}],"ja":[{"name":"Seiichi Shin"},{"name":"池田 建司"}]},"event":{"en":"Proc. of IEEE 2nd International Workshop on Emerging Technologies and Factory Automation","ja":"Proc. of IEEE 2nd International Workshop on Emerging Technologies and Factory Automation"},"publication_date":"1993-09","languages":["eng"],"location":{"en":"North Queensland","ja":"North Queensland"},"description":{"en":"本論文では, 筆者らが提案している分散型ハイゲイン適応制御は耐故障性を持つことを自己相似性に基づいて示し, 分散型制御系の特徴である, 耐故障性, オンライン拡張性などを説明する原理を明らかにした.","ja":"本論文では, 筆者らが提案している分散型ハイゲイン適応制御は耐故障性を持つことを自己相似性に基づいて示し, 分散型制御系の特徴である, 耐故障性, オンライン拡張性などを説明する原理を明らかにした."},"is_international_presentation":true},"priority":"input_data"}
line:94, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378726"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=118423","label":"url"}],"presentation_title":{"en":"A Servo Design of Decentralized Adaptive Control","ja":"A Servo Design of Decentralized Adaptive Control"},"presenters":{"en":[{"name":"Ikeda Kenji"},{"name":"Seiichi Shin"},{"name":"Toshiyuki Kitamori"}],"ja":[{"name":"池田 建司"},{"name":"Seiichi Shin"},{"name":"Toshiyuki Kitamori"}]},"event":{"en":"Proc. of International Symposium on the Mathematical Theory of Networks and Systems","ja":"Proc. of International Symposium on the Mathematical Theory of Networks and Systems"},"publication_date":"1993-07","languages":["eng"],"location":{"en":"Regensburg","ja":"Regensburg"},"description":{"en":"先に提案した分散型ハイゲイン適応制御では, 制御系の安定化を目的としていたが, 本論文では, 一定目標値などへの追従を制御目的としたサーボ系の構成へ拡張した. すべての信号の有界性と, 耐故障性の解析を行っている.","ja":"先に提案した分散型ハイゲイン適応制御では, 制御系の安定化を目的としていたが, 本論文では, 一定目標値などへの追従を制御目的としたサーボ系の構成へ拡張した. すべての信号の有界性と, 耐故障性の解析を行っている."},"is_international_presentation":true},"priority":"input_data"}
line:95, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378727"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=118422","label":"url"}],"presentation_title":{"en":"Fault Tolerance of Decentralized Adaptive Control","ja":"Fault Tolerance of Decentralized Adaptive Control"},"presenters":{"en":[{"name":"Ikeda Kenji"},{"name":"Seiichi Shin"},{"name":"Toshiyuki Kitamori"}],"ja":[{"name":"池田 建司"},{"name":"Seiichi Shin"},{"name":"Toshiyuki Kitamori"}]},"event":{"en":"Proc. of International Symposium on Autonomous Decentralized Systems","ja":"Proc. of International Symposium on Autonomous Decentralized Systems"},"publication_date":"1993-03-30","languages":["eng"],"location":{"en":"Kawasaki","ja":"Kawasaki"},"description":{"en":"分散型制御系の特徴として, 耐故障性, 保守·点検の容易さ, オンライン拡張性などが挙げられている. 本論文では, 分散型ハイゲイン適応制御の安定性解析に基づき, 耐故障性を持つことを自己相似性に基づいて示した.","ja":"分散型制御系の特徴として, 耐故障性, 保守·点検の容易さ, オンライン拡張性などが挙げられている. 本論文では, 分散型ハイゲイン適応制御の安定性解析に基づき, 耐故障性を持つことを自己相似性に基づいて示した."},"is_international_presentation":true},"priority":"input_data"}
line:96, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378728"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=118420","label":"url"}],"presentation_title":{"en":"A Method of Fuzzy Control Using a Probabilistic Model","ja":"A Method of Fuzzy Control Using a Probabilistic Model"},"presenters":{"en":[{"name":"Sadaaki Miyamoto"},{"name":"Ikeda Kenji"}],"ja":[{"name":"Sadaaki Miyamoto"},{"name":"池田 建司"}]},"event":{"en":"Proc. of the Korea-Japan Joint Conference on Fuzzy Systems and Engineering","ja":"Proc. of the Korea-Japan Joint Conference on Fuzzy Systems and Engineering"},"publication_date":"1992-08-20","languages":["eng"],"location":{"en":"Seoul","ja":"Seoul"},"description":{"en":"ファジィ制御は, ファジィ集合を使わずとも, 確率モデルを用いて構成可能であると思われていたが, これは証明されたことではなかった. 本論文では, まず, この予想が正しいことを示した上で, ファジィ制御の方が確率的手法に比べて使いやすいこと, および, 確率的手法では確率密度関数に関する完全な知識が必要である点を指摘した.","ja":"ファジィ制御は, ファジィ集合を使わずとも, 確率モデルを用いて構成可能であると思われていたが, これは証明されたことではなかった. 本論文では, まず, この予想が正しいことを示した上で, ファジィ制御の方が確率的手法に比べて使いやすいこと, および, 確率的手法では確率密度関数に関する完全な知識が必要である点を指摘した."},"is_international_presentation":true},"priority":"input_data"}
line:97, {"insert":{"user_id":"1000039003","type":"presentations","id":"43070562"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=400357","label":"url"}],"presentation_title":{"en":"Numerical analysis of state-term estimation in closed-loop LPV identification","ja":"閉ループLPV同定における状態項に関する数値的解析"},"presenters":{"en":[{"name":"Tanaka Hideyuki"},{"name":"Ikeda Kenji"}],"ja":[{"name":"田中 秀幸"},{"name":"池田 建司"}]},"event":{"en":"第10回計測自動制御学会制御部門マルチシンポジウム","ja":"第10回計測自動制御学会制御部門マルチシンポジウム"},"publication_date":"2023-03-10","languages":["jpn"],"promoter":{"en":"The Society of Instrument and Control Engineers","ja":"計測自動制御学会"},"location":{"en":"Kusatsu","ja":"草津"},"description":{"en":"This paper considers numerical analysis of state-term estimation in a closed-loop LPV (linear Parameter-Varying) identification method presented by the authors. Based on predictor-based system identification (PBSID) for an LTI (Linear-Time-Invariant) system, computation of the intersection between the pas and future data is motivated. The closed-loop LPV identification method presented by the authors is moreover reviewed, and the past and future part of the Gram matrices are derived. A computation method of the intersection between them is presented.","ja":"This paper considers numerical analysis of state-term estimation in a closed-loop LPV (linear Parameter-Varying) identification method presented by the authors. Based on predictor-based system identification (PBSID) for an LTI (Linear-Time-Invariant) system, computation of the intersection between the pas and future data is motivated. The closed-loop LPV identification method presented by the authors is moreover reviewed, and the past and future part of the Gram matrices are derived. A computation method of the intersection between them is presented."},"is_international_presentation":false},"priority":"input_data"}
line:98, {"insert":{"user_id":"1000039003","type":"presentations","id":"43070563"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=400354","label":"url"}],"presentation_title":{"en":"Frequency Domain Uncertainty Estimation in a Closed Loop Subspace Identification Method","ja":"ある閉ループ部分空間同定法における周波数領域での不確かさの推定"},"presenters":{"en":[{"name":"Ikeda Kenji"},{"name":"Tanaka HIdeyuki"}],"ja":[{"name":"池田 建司"},{"name":"田中 秀幸"}]},"event":{"en":"第10回計測自動制御学会制御部門マルチシンポジウム","ja":"第10回計測自動制御学会制御部門マルチシンポジウム"},"publication_date":"2023-03-10","languages":["jpn"],"promoter":{"en":"The Society of Instrument and Control Engineers","ja":"計測自動制御学会"},"location":{"en":"Kusatsu","ja":"草津"},"description":{"en":"This paper proposes an estimate of the covariance matrix of the estimated system matrices in a closed-loop identification method previously proposed by the authors. The estimate of the covariance matrix can be derived from a set of input/output data used for the identification. It is important to provide a covariance matrix of the estimate in order to guarantee the quality of the estimate. Based on the estimated covariance matrix, the uncertainty of the estimated transfer function is derived. Numerical simulations illustrate the validity of the derived covariance estimate.","ja":"This paper proposes an estimate of the covariance matrix of the estimated system matrices in a closed-loop identification method previously proposed by the authors. The estimate of the covariance matrix can be derived from a set of input/output data used for the identification. It is important to provide a covariance matrix of the estimate in order to guarantee the quality of the estimate. Based on the estimated covariance matrix, the uncertainty of the estimated transfer function is derived. Numerical simulations illustrate the validity of the derived covariance estimate."},"is_international_presentation":false},"priority":"input_data"}
line:99, {"insert":{"user_id":"1000039003","type":"presentations","id":"43070564"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=400353","label":"url"}],"presentation_title":{"en":"Identification of Nonlinear ARX model using kernel method with random Fourier features","ja":"乱択化フーリエ特徴関数によるカーネル法を用いた非線形ARXモデルの同定"},"presenters":{"en":[{"name":"Tanaka Hideyuki"},{"name":"Ikeda Kenji"}],"ja":[{"name":"田中 秀幸"},{"name":"池田 建司"}]},"event":{"en":"第65回自動制御連合講演会","ja":"第65回自動制御連合講演会"},"publication_date":"2022-11-13","languages":["jpn"],"location":{"en":"Utsunomiya","ja":"宇都宮"},"description":{"en":"This paper studies identification of nonlinear-ARX (NARX) model using a kernel method. Random Fourier features are applied to identification of a NARX model, since the size of the matrix in computing regression becomes large in kernel methods, and the numerical computation time is long. Numerical simulation is given to evaluate effectiveness of the present method.","ja":"This paper studies identification of nonlinear-ARX (NARX) model using a kernel method. Random Fourier features are applied to identification of a NARX model, since the size of the matrix in computing regression becomes large in kernel methods, and the numerical computation time is long. Numerical simulation is given to evaluate effectiveness of the present method."},"is_international_presentation":false},"priority":"input_data"}
line:100, {"insert":{"user_id":"1000039003","type":"presentations","id":"43070565"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=400352","label":"url"}],"presentation_title":{"en":"Covariance estimation of the estimated extended observability matrix in Closed-Loop MOESP","ja":"Closed-Loop MOESP法における拡大可観測性行列推定値の共分散行列の推定"},"presenters":{"en":[{"name":"Ikeda Kenji"},{"name":"Tanaka Hideyuki"}],"ja":[{"name":"池田 建司"},{"name":"田中 秀幸"}]},"event":{"en":"第65回自動制御連合講演会","ja":"第65回自動制御連合講演会"},"publication_date":"2022-11-13","languages":["jpn"],"location":{"en":"Utsunomiya","ja":"宇都宮"},"description":{"en":"It is important to provide a covariance of the estimates to ensure the quality of the identification results. This paper proposes a formula of the covariance of the estimate of the extended observability matrix in Closed-Loop MOESP. The derived formula uses the gap between singular subspaces to estimate the perturbation of the extended observability matrix. The derived formula can be used to estimate its covariance matrix from a single identification result. Numerical simulation compares the sample covariance with the derived formula","ja":"It is important to provide a covariance of the estimates to ensure the quality of the identification results. This paper proposes a formula of the covariance of the estimate of the extended observability matrix in Closed-Loop MOESP. The derived formula uses the gap between singular subspaces to estimate the perturbation of the extended observability matrix. The derived formula can be used to estimate its covariance matrix from a single identification result. Numerical simulation compares the sample covariance with the derived formula"},"is_international_presentation":false},"priority":"input_data"}
line:101, {"insert":{"user_id":"1000039003","type":"presentations","id":"38890541"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=386492","label":"url"}],"presentation_title":{"en":"On state estimation of LPV system under feedback via kernel method","ja":"カーネル法による閉ループ下にあるLPVシステムの状態推定について"},"presenters":{"en":[{"name":"Tanaka Hideyuki"},{"name":"Ikeda Kenji"}],"ja":[{"name":"田中 秀幸"},{"name":"池田 建司"}]},"event":{"en":"第9回計測自動制御学会制御部門マルチシンポジウム","ja":"第9回計測自動制御学会制御部門マルチシンポジウム"},"publication_date":"2022-03-10","languages":["jpn"],"location":{"en":"Online","ja":"オンライン"},"description":{"en":"This paper studies state-space estimation for identifying a Linear Parameter Varying (LPV) system. By using kernel least-squares and kernel canonical correlation analysis, two state-space identification algorithms for a Linear-Time-Invariant (LTI) system are extended: The one is PBSID (Predictor Based System IDentification), and the other is the stochastic realization or stochastic subspace identification. It is pointed out in this paper that a closed-loop state-space identification algorithm for an LPV system recently developed coincides with the one obtained by extending the stochastic realization algorithm to an LPV system. Numerical simulations show that the algorithm based on stochastic realization suffers from numerical problems and that the algorithm based on PBSID outperforms that of stochastic realization.","ja":"This paper studies state-space estimation for identifying a Linear Parameter Varying (LPV) system. By using kernel least-squares and kernel canonical correlation analysis, two state-space identification algorithms for a Linear-Time-Invariant (LTI) system are extended: The one is PBSID (Predictor Based System IDentification), and the other is the stochastic realization or stochastic subspace identification. It is pointed out in this paper that a closed-loop state-space identification algorithm for an LPV system recently developed coincides with the one obtained by extending the stochastic realization algorithm to an LPV system. Numerical simulations show that the algorithm based on stochastic realization suffers from numerical problems and that the algorithm based on PBSID outperforms that of stochastic realization."},"is_international_presentation":false},"priority":"input_data"}
line:102, {"insert":{"user_id":"1000039003","type":"presentations","id":"38890542"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=386489","label":"url"}],"presentation_title":{"en":"Numerical Analysis on the Rank of Weighting Matrix in BLUE","ja":"BLUEにおける重み行列のランクに関する数値解析"},"presenters":{"en":[{"name":"Ikeda Kenji"},{"name":"Tanaka HIdeyuki"}],"ja":[{"name":"池田 建司"},{"name":"田中 秀幸"}]},"event":{"en":"第9回計測自動制御学会制御部門マルチシンポジウム","ja":"第9回計測自動制御学会制御部門マルチシンポジウム"},"publication_date":"2022-03-08","languages":["jpn"],"location":{"en":"Online","ja":"オンライン"},"description":{"en":"This paper numerically analyzes the rank of a weighting matrix in the BLUE (best linear unbiased estimator), which was previously proposed by the authors for the estimation of noise covariance matrix of the system. Since the weighting matrix is singular, its rank is required for the calculation of the pseudo-inverse. The rank of the weighting matrix is numerically analyzed and it is given as a function of the system degree, the number of output, and a design parameter called future horizon.","ja":"This paper numerically analyzes the rank of a weighting matrix in the BLUE (best linear unbiased estimator), which was previously proposed by the authors for the estimation of noise covariance matrix of the system. Since the weighting matrix is singular, its rank is required for the calculation of the pseudo-inverse. The rank of the weighting matrix is numerically analyzed and it is given as a function of the system degree, the number of output, and a design parameter called future horizon."},"is_international_presentation":false},"priority":"input_data"}
line:103, {"insert":{"user_id":"1000039003","type":"presentations","id":"38890543"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=386487","label":"url"}],"presentation_title":{"en":"Idetification of minimal realization of plant under feedback --- an approach via state estimation","ja":"フィードバック下にある同定対象の最小実現の同定 --- 状態推定によるアプローチ"},"presenters":{"en":[{"name":"Tanaka Hideyuki"},{"name":"Ikeda Kenji"}],"ja":[{"name":"田中 秀幸"},{"name":"池田 建司"}]},"event":{"en":"第64回自動制御連合後援会","ja":"第64回自動制御連合後援会"},"publication_date":"2021-11-13","languages":["jpn"],"location":{"en":"Online","ja":"オンライン"},"description":{"en":"This paper formulates a problem of finding a minimal realization of an unstable plant under feedback. Different from the earlier studies by the authors, the problem setting does not assume a linear-time-invariant controller of the finite order. The authors introduce an orthogonal direct sum decomposition of the input-output data in a Hilbert space and derive a state estimation method for a minimal realization of the plant based on the decomposition. They develop a realization algorithm for finding a minimal realization of an unstable plant based on the result and obtain a closed-loop subspace identification method.","ja":"This paper formulates a problem of finding a minimal realization of an unstable plant under feedback. Different from the earlier studies by the authors, the problem setting does not assume a linear-time-invariant controller of the finite order. The authors introduce an orthogonal direct sum decomposition of the input-output data in a Hilbert space and derive a state estimation method for a minimal realization of the plant based on the decomposition. They develop a realization algorithm for finding a minimal realization of an unstable plant based on the result and obtain a closed-loop subspace identification method."},"is_international_presentation":false},"priority":"input_data"}
line:104, {"insert":{"user_id":"1000039003","type":"presentations","id":"38890544"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=386486","label":"url"}],"presentation_title":{"en":"On the covariance analysis of the estimated of the noise covariance","ja":"雑音共分散行列の推定値の分散解析"},"presenters":{"en":[{"name":"Ikeda Kenji"},{"name":"Tanaka Hideyuki"}],"ja":[{"name":"池田 建司"},{"name":"田中 秀幸"}]},"event":{"en":"第64回自動制御連合後援会","ja":"第64回自動制御連合後援会"},"publication_date":"2021-11-13","languages":["jpn"],"location":{"en":"Online","ja":"オンライン"},"description":{"en":"This paper analyzes the covariance of the estimated covariance matrix of the process and measurement noises in Gauss-Markov models. From some numerical simulations, it was shown that an estimation method of the noise covariance with CCA (canonical correlation analysis) weighting matrix proposed by the authors gives good performance. The covariance of the error term in the proposed method is derived. On the other hand, a BLUE (best linear unbiased estimate) for the corresponding problem is derived by using a newly derived lemma. The proposed estimate is compared with the BLUE.","ja":"This paper analyzes the covariance of the estimated covariance matrix of the process and measurement noises in Gauss-Markov models. From some numerical simulations, it was shown that an estimation method of the noise covariance with CCA (canonical correlation analysis) weighting matrix proposed by the authors gives good performance. The covariance of the error term in the proposed method is derived. On the other hand, a BLUE (best linear unbiased estimate) for the corresponding problem is derived by using a newly derived lemma. The proposed estimate is compared with the BLUE."},"is_international_presentation":false},"priority":"input_data"}
line:105, {"insert":{"user_id":"1000039003","type":"presentations","id":"38890546"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=386485","label":"url"}],"presentation_title":{"en":"Minimal realization of unstable system under feedback --- Derivation of numerically sound calculation method","ja":"閉ループ下にある不安定系の最小実現 --- 数値的に安定な計算法の導出"},"presenters":{"en":[{"name":"Tanaka Hideyuki"},{"name":"Ikeda Kenji"}],"ja":[{"name":"田中 秀幸"},{"name":"池田 建司"}]},"event":{"en":"第8回計測自動制御学会制御部門マルチシンポジウム","ja":"第8回計測自動制御学会制御部門マルチシンポジウム"},"publication_date":"2021-03-04","languages":["jpn"],"location":{"en":"Online","ja":"オンライン"},"description":{"en":"This paper develops a numeirically sound method for identifying a minimal realization of an unstable linear plant under feedback. It is assumed that the plant and noise models have non-common state matrices and that the plant is stabilized by a linear time invariant system of finite order. A numerically sound computation method is derived by the product of the extended observability and reachability matrices of the left and right coprime factor representations of the plant, by improving the past research of the authors. Numerical simulation results show the effectiveness of the proposed method.","ja":"This paper develops a numeirically sound method for identifying a minimal realization of an unstable linear plant under feedback. It is assumed that the plant and noise models have non-common state matrices and that the plant is stabilized by a linear time invariant system of finite order. A numerically sound computation method is derived by the product of the extended observability and reachability matrices of the left and right coprime factor representations of the plant, by improving the past research of the authors. Numerical simulation results show the effectiveness of the proposed method."},"is_international_presentation":false},"priority":"input_data"}
line:106, {"insert":{"user_id":"1000039003","type":"presentations","id":"38890547"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=386484","label":"url"}],"presentation_title":{"en":"Numerical Analysis of the Reduction of the Bias in Closed-Loop Subspace Identification Method","ja":"閉ループ部分空間同定法におけるバイアス低減に関する数値的解析"},"presenters":{"en":[{"name":"Ikeda Kenji"},{"name":"Tanaka HIdeyuki"}],"ja":[{"name":"池田 建司"},{"name":"田中 秀幸"}]},"event":{"en":"第8回計測自動制御学会制御部門マルチシンポジウム","ja":"第8回計測自動制御学会制御部門マルチシンポジウム"},"publication_date":"2021-03-04","languages":["jpn"],"location":{"en":"Online","ja":"オンライン"},"description":{"en":"It is seen that the estimate of the extended observability matrix in Closed-Loop MOESP has a smaller bias compared to other methods when pas/future horizons are comparatively small. The reason of the fact is that the image of the term causing the bias is close to the image of the extended observer matrix. In this paper, it is analyzed theoretically and numerically how close the images are and numerical simulation shows that the bias is reduced in practice.","ja":"It is seen that the estimate of the extended observability matrix in Closed-Loop MOESP has a smaller bias compared to other methods when pas/future horizons are comparatively small. The reason of the fact is that the image of the term causing the bias is close to the image of the extended observer matrix. In this paper, it is analyzed theoretically and numerically how close the images are and numerical simulation shows that the bias is reduced in practice."},"is_international_presentation":false},"priority":"input_data"}
line:107, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378729"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=364204","label":"url"}],"presentation_title":{"en":"Selection of Input Joints for Gait Generation of Biped Robot","ja":"二足歩行ロボットの歩容生成における入力関節の選択について"},"presenters":{"en":[{"name":"Yuya Yamano"},{"name":"Ikeda Kenji"}],"ja":[{"name":"山野 佑弥"},{"name":"池田 建司"}]},"event":{"en":"第7回 制御部門マルチシンポジウム","ja":"第7回 制御部門マルチシンポジウム"},"publication_date":"2020-03-03","languages":["jpn"],"location":{"en":"Tokushima","ja":"徳島"},"description":{"en":"エネルギー制御を用いて二足歩行ロボットの歩容生成をするとき，加えるエネルギーが同じでも入力する関節やタイミングが異なると異なる歩容が生成される．入力トルクによってつぎ込むエネルギー量が変わる．そのためトルクを入力する関節を選択しなければならない．本研究では，効率の良い歩容生成を目的とし，エネルギー制御によって求めたトルクを入力する関節の選択について考察した．検証として，腰に入力した場合と膝に入力した場合を比較した．その結果，エネルギー効率の良い入力関節が膝であることがわかった．","ja":"エネルギー制御を用いて二足歩行ロボットの歩容生成をするとき，加えるエネルギーが同じでも入力する関節やタイミングが異なると異なる歩容が生成される．入力トルクによってつぎ込むエネルギー量が変わる．そのためトルクを入力する関節を選択しなければならない．本研究では，効率の良い歩容生成を目的とし，エネルギー制御によって求めたトルクを入力する関節の選択について考察した．検証として，腰に入力した場合と膝に入力した場合を比較した．その結果，エネルギー効率の良い入力関節が膝であることがわかった．"},"is_international_presentation":false},"priority":"input_data"}
line:108, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378730"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=364200","label":"url"}],"presentation_title":{"en":"Estimation of parameters using system identification and application to robust nonlinear estimation","ja":"システム同定を用いた物理パラメータの推定と非線形ロバスト推定手法への適用"},"presenters":{"en":[{"name":"Kotaro Matsuo"},{"name":"Ikeda Kenji"}],"ja":[{"name":"松尾 功太郎"},{"name":"池田 建司"}]},"event":{"en":"第7回 制御部門マルチシンポジウム","ja":"第7回 制御部門マルチシンポジウム"},"publication_date":"2020-03-03","languages":["jpn"],"location":{"en":"Tokushima","ja":"徳島"},"description":{"en":"In this study, we propose an estimation method of physical parameters of the plants and their uncertainty of the controlled object using the system identification and Unscented Transformation (UT). By accurately estimating the uncertainty, the deterioration of the precision of the state estimate is expected to be reduced.","ja":"In this study, we propose an estimation method of physical parameters of the plants and their uncertainty of the controlled object using the system identification and Unscented Transformation (UT). By accurately estimating the uncertainty, the deterioration of the precision of the state estimate is expected to be reduced."},"is_international_presentation":false},"priority":"input_data"}
line:109, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378731"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=364196","label":"url"}],"presentation_title":{"en":"Modeling of Drone's Energy Consumption","ja":"ドローンのエネルギー消費のモデル化"},"presenters":{"en":[{"name":"Takahiro Daikoku"},{"name":"Ikeda Kenji"}],"ja":[{"name":"大黒 嵩浩"},{"name":"池田 建司"}]},"event":{"en":"第62回自動制御連合講演会","ja":"第62回自動制御連合講演会"},"publication_date":"2019-11-09","languages":["jpn"],"promoter":{"en":"The Institute of Systems, Control and Information Engineers","ja":"システム制御情報学会"},"location":{"en":"Sapporo","ja":"札幌"},"description":{"en":"In this paper, we focus on drone's battery exhaustion. The purpose is to extend the flight time by controlling the flight speed. We obtain electric current data using amperometer on the drone. Next, we estimate a model of energy consumption using system identification an compare the energy consumption of the real machine and the estimated model.","ja":"In this paper, we focus on drone's battery exhaustion. The purpose is to extend the flight time by controlling the flight speed. We obtain electric current data using amperometer on the drone. Next, we estimate a model of energy consumption using system identification an compare the energy consumption of the real machine and the estimated model."},"is_international_presentation":false},"priority":"input_data"}
line:110, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378732"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=364195","label":"url"}],"presentation_title":{"en":"Identification of systems having unreachable stochastic system with eigenvalues on the closed unit disc","ja":"不可到達な確率系をもつ安定限界なシステムの同定"},"presenters":{"en":[{"name":"Ikeda Kenji"},{"name":"Tanaka Hideyuki"}],"ja":[{"name":"池田 建司"},{"name":"田中 秀幸"}]},"event":{"en":"第6回 制御部門マルチシンポジウム","ja":"第6回 制御部門マルチシンポジウム"},"publication_date":"2019-03-07","languages":["jpn"],"location":{"en":"Tokyo","ja":"東京"},"description":{"en":"This paper applies an identification method of innovations model previously proposed by the authors to the case when the system is unstabilizable. It is shown that the previously proposed optimization problem can estimate the noise covariance even when the system is unstabilizable. The step of estimating the innovations model from the noise covariance is modified so as to treat the unstabilizable systems. A numerical simulation illustrates the effectiveness of the proposed method.","ja":"This paper applies an identification method of innovations model previously proposed by the authors to the case when the system is unstabilizable. It is shown that the previously proposed optimization problem can estimate the noise covariance even when the system is unstabilizable. The step of estimating the innovations model from the noise covariance is modified so as to treat the unstabilizable systems. A numerical simulation illustrates the effectiveness of the proposed method."},"is_international_presentation":false},"priority":"input_data"}
line:111, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378733"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=348265","label":"url"}],"presentation_title":{"en":"Another semidefinite programming problem for subspace identification method taking initial state into account","ja":"初期状態を考慮した部分空間同定法のためのもう一つの半正定値計画問題"},"presenters":{"en":[{"name":"Ikeda Kenji"},{"name":"Tanaka Hideyuki"}],"ja":[{"name":"池田 建司"},{"name":"田中 秀幸"}]},"event":{"en":"第61回自動制御連合講演会","ja":"第61回自動制御連合講演会"},"publication_date":"2018-11-17","languages":["jpn"],"promoter":{"en":"The Institute of Systems, Control and Information Engineers","ja":"システム制御情報学会"},"location":{"en":"Nagoya","ja":"名古屋"},"description":{"en":"This paper proposes an another semi-definite programming problem for the consistent estimation of the noise covariance and analyzes the solvability of the problem. The authors proposed two methods: one is to estimate the noise covariance together with the bias term, and the other is to estimate the noise covariance by cancelling the bias term. This presentation concerns the latter approach. The merit of the proposed method is the size of the data matrix required in the proposed method is smaller than that in the previous method. Conditions for the problem to be solved and the uniqueness of the spectral density function of the noise are analyzed.","ja":"本論文は雑音分散の一致推定のためのもう一つの半正定値計画問題を提案し，その可解性について解析する．筆者らは二つの手法を提案してきた．一つは雑音分散とバイアス項を同時に推定する手法，もう一つは，バイアス項を消去してから雑音分s何を推定する手法である．本論文の手法は後者に属する．提案手法の利点は以前に提案した手法に比べ，必要とされる行列のサイズが小さくて済むことである．問題が可解となるための条件や雑音のスペクトル密度関数が一意に推定されることを解析する．"},"is_international_presentation":false},"priority":"input_data"}
line:112, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378734"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=338036","label":"url"}],"presentation_title":{"en":"On the Identifiability in an SDP Problem for the Estimation of Innovations Model","ja":"イノベーションモデル推定のためのSDP問題における可同定性について"},"presenters":{"en":[{"name":"Ikeda Kenji"},{"name":"Tanaka Hideyuki"}],"ja":[{"name":"池田 建司"},{"name":"田中 秀幸"}]},"event":{"en":"第5回 制御部門マルチシンポジウム","ja":"第5回 制御部門マルチシンポジウム"},"publication_date":"2018-03-10","languages":["jpn"],"location":{"en":"Tokyo","ja":"東京"},"description":{"en":"The authors proposed an SDP formulation for the identification of the Kalman gain and the covariance matrix of the innovations process, aiming at a consistent estimation. However, the rank of a coefficient matrix of the variables does not have a column full rank, so that the uniqueness of the solution or the identifiability are not clear. In this paper, a sufficient condition for the system to be identifiable by the proposed method almost everywhere is derived.","ja":"筆者らはカルマンゲインとイノベーション過程の共分s何行列の一致推定を目指して，半正定値計画問題を提案してきた．しかしながら，最適化変数の係数行列は列フルランクとならないため，問題の可解性や同定可能性は不明であった．本論文では，ほとんど至るところでシステムが同定可能となるための十分条件を導出する．"},"is_international_presentation":false},"priority":"input_data"}
line:113, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378735"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=338035","label":"url"}],"presentation_title":{"en":"Stochastic subspace identification methods taking initial state into account via semidefinite programming approach","ja":"半正定値計画問題により初期状態を考慮した確率部分空間同定法"},"presenters":{"en":[{"name":"田中 秀幸"},{"name":"Ikeda Kenji"}],"ja":[{"name":"田中 秀幸"},{"name":"池田 建司"}]},"event":{"en":"第60回自動制御連合講演会","ja":"第60回自動制御連合講演会"},"publication_date":"2017-11-12","languages":["jpn"],"location":{"en":"Tokyo","ja":"東京"},"description":{"en":"In this paper, the authors develop stochastic subspace identification algorithms taking initial state into account via a semidefinite programming approach. They develop two subspace algorithms by deleting the initial state from the covariance matrix and by finding the white-input and the state terms in the covariance data. They moreover consider variations of the computation algorithms based on the minimum and maximum convariance matrix of the state of the stochastic system. They provide numerical simulation, comparing the algorithms with the one previously proposed.","ja":"本論文では，半正定値計画問題を用いて初期状態を考慮した確率部分空間同定アルゴリズムを開発する．一つは共分散行列から初期状態を消去する手法，もう一つは共分散データの白色雑音成分と状態項をともに推定する手法である．さらに確率システムの状態の最大共分散と最小共分散にもとづく計算アルゴリズムを考える．以前に提案した手法とこれらの手法を数値シミュレーションで比較する．"},"is_international_presentation":false},"priority":"input_data"}
line:114, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378736"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=338034","label":"url"}],"presentation_title":{"en":"Problem Formulation for Estimating Innovations Model","ja":"変数変換を用いたイノベーションモデル推定問題の定式化"},"presenters":{"en":[{"name":"Ikeda Kenji"},{"name":"Tanaka Hideyuki"}],"ja":[{"name":"池田 建司"},{"name":"田中 秀幸"}]},"event":{"en":"第60回自動制御連合講演会","ja":"第60回自動制御連合講演会"},"publication_date":"2017-11-12","languages":["jpn"],"location":{"en":"Tokyo","ja":"東京"},"description":{"en":"An estimation problem of kalman gain and the covariance of the innovations process has been formulated as a nonlinear optimization problem in order to reduce the bias of the estimate. In this paper, the problem is formulated as an SDP (semi-definite programming) problem by using change of variables. The effectiveness of the proposed method is illustrated by using a numerical example.","ja":"カルマンゲインとイノベーション過程の共分散行列の一致推定は非線形最適化問題として定式化されてきた．本論文では，変数変換の手法を用いることで，同定問題を半正定値計画問題として定式化する．提案手法の有用性を数値例により示す．"},"is_international_presentation":false},"priority":"input_data"}
line:115, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378737"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=348272","label":"url"}],"presentation_title":{"en":"Closed-loop identification based on the null-space of the extended observability matrix","ja":"拡大可観測行列の零空間に基づく閉ループ同定"},"presenters":{"en":[{"name":"Tanaka Hideyuki"},{"name":"Ikeda Kenji"}],"ja":[{"name":"田中 秀幸"},{"name":"池田 建司"}]},"event":{"en":"The 4th Multi-symposium on Control Systems (MSCS 2017)","ja":"第4回制御部門マルチシンポジウム"},"publication_date":"2017-03-09","languages":["jpn"],"promoter":{"en":"The Society of Instrument and Control Engineers","ja":"計測自動制御学会"},"location":{"en":"Okayama","ja":"岡山"},"description":{"en":"In this paper, the authors consider closed-loop identification based on a stochastic system for the joint-input-output. They develop a new closed-loop system identification method based on the null-space of the extended observability matrix for the stochastic system by taking the initial state of the stochastic system into account. Numerical simulation indicates that the new method gives better results than the closed-loop system identification method developed earlier by the authors based on a Riccati equation and linear matrix inequalities to guarantee positive realness of the stochastic system.","ja":"本論文では，確率システムの結合入出力に基づいた閉ループ同定を考える．確率システムの初期状態を考慮に入ることによって確率システムの拡大可観測行列の零空間に基づく新しい閉ループ同定手法を提案する．数値シミュレーションにより，新しい提案手法は筆者らが以前に提案した確率システムの正実性を保証するリカッチ方程式とLMIに基づく閉ループ同定法よりも良い結果を与えることを示す．"},"is_international_presentation":false},"priority":"input_data"}
line:116, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378738"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=324012","label":"url"}],"presentation_title":{"en":"Local Convergence of an Algorithm for Consistent Estimate of Innovations Model","ja":"イノベーションモデルの一致推定のための解法の局所収束性"},"presenters":{"en":[{"name":"Ikeda Kenji"}],"ja":[{"name":"池田 建司"}]},"event":{"en":"第4回 制御部門マルチシンポジウム","ja":"第4回 制御部門マルチシンポジウム"},"publication_date":"2017-03-09","languages":["jpn"],"location":{"en":"Okayama","ja":"岡山"},"description":{"en":"This paper analyzes the convergence property of a numerical algorithm proposed by the author, which estimates Kalman gain and the covariance matrix of a innovations process consistently. The estimates are given as solutions of some BMI problem, so an algorithm which iteratively solves some LMI's are proposed. In this paper, the algorithm is shown to be locally convergent.","ja":"本論文は，筆者が以前に提案したカルマンゲインとイノベーション過程の共分散行列の一致推定を与える数値アルゴリムズの収束性について解析する．推定値はあるBMI問題の解として与えられるため，LMIを繰り返し解く手法が提案される．本論文では，提案されたアルゴリズムは局所的に収束することを示す．"},"is_international_presentation":false},"priority":"input_data"}
line:117, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378739"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=324011","label":"url"}],"presentation_title":{"en":"Convergence of an Estimation Method of kalman Gain by using Cholesky Factor","ja":"Cholesky Factor を用いたKalmanゲインの推定手法の収束性について"},"presenters":{"en":[{"name":"Ikeda Kenji"}],"ja":[{"name":"池田 建司"}]},"event":{"en":"第59回自動制御連合講演会","ja":"第59回自動制御連合講演会"},"publication_date":"2016-11-10","languages":["jpn"],"location":{"en":"Kitakyushu","ja":"北九州"},"is_international_presentation":false},"priority":"input_data"}
line:118, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378740"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=324010","label":"url"}],"presentation_title":{"en":"Consistent Estimate of Kalman Gain by using Cholesky Factor","ja":"Cholesky 分解を用いた Kalman ゲインの一致推定"},"presenters":{"en":[{"name":"Ikeda Kenji"}],"ja":[{"name":"池田 建司"}]},"event":{"en":"第60回システム制御情報学会研究発表講演会","ja":"第60回システム制御情報学会研究発表講演会"},"publication_date":"2016-05-25","languages":["jpn"],"location":{"en":"Kyoto","ja":"京都"},"is_international_presentation":false},"priority":"input_data"}
line:119, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378741"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=324009","label":"url"}],"presentation_title":{"en":"Numerical Solution for a Consistent Estimate of kalman Gain","ja":"カルマンゲインの一致推定値の数値的解法"},"presenters":{"en":[{"name":"Ikeda Kenji"}],"ja":[{"name":"池田 建司"}]},"event":{"en":"第3回制御部門マルチシンポジウム","ja":"第3回制御部門マルチシンポジウム"},"publication_date":"2016-03-08","languages":["jpn"],"location":{"en":"Nagoya","ja":"名古屋"},"is_international_presentation":false},"priority":"input_data"}
line:120, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378742"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=308193","label":"url"}],"presentation_title":{"en":"Consistent Estimate of Covariance Matrix of Innovations Process","ja":"イノベーション過程の共分散行列の一致推定値"},"presenters":{"en":[{"name":"Ikeda Kenji"}],"ja":[{"name":"池田 建司"}]},"event":{"en":"第58回自動制御連合講演会","ja":"第58回自動制御連合講演会"},"publication_date":"2015-11-14","languages":["jpn"],"promoter":{"en":"The Institute of Systems, Control and Information Engineers","ja":"システム制御情報学会"},"location":{"en":"Kobe","ja":"神戸"},"is_international_presentation":false},"priority":"input_data"}
line:121, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378743"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=295183","label":"url"}],"presentation_title":{"en":"Error Analysis of Subspace Identification Method in Closed Loop Environment","ja":"閉ループ環境における部分空間同定法の誤差解析"},"presenters":{"en":[{"name":"Ikeda Kenji"}],"ja":[{"name":"池田 建司"}]},"event":{"en":"第59回システム制御情報学会研究発表講演会","ja":"第59回システム制御情報学会研究発表講演会"},"publication_date":"2015-05-20","languages":["jpn"],"location":{"en":"Osaka","ja":"大阪"},"description":{"en":"This paper analyzes the estimation error of B and D matrices in closed-loop environment which are estimated by using OE-PIV method proposed by Chou and Verhaegen. Estimates of A and C matrices in closed-loop environment which are obtained by applying PO-MOESP method in the framework of direct method of the closed loop identification has no asymptotic bias and their estimation error can be derived in the previous paper. In this paper, the relation between the estimation error of (B,D) and the estimation error of (A,C,K) are derived.","ja":"This paper analyzes the estimation error of B and D matrices in closed-loop environment which are estimated by using OE-PIV method proposed by Chou and Verhaegen. Estimates of A and C matrices in closed-loop environment which are obtained by applying PO-MOESP method in the framework of direct method of the closed loop identification has no asymptotic bias and their estimation error can be derived in the previous paper. In this paper, the relation between the estimation error of (B,D) and the estimation error of (A,C,K) are derived."},"is_international_presentation":false},"priority":"input_data"}
line:122, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378744"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=308191","label":"url"}],"presentation_title":{"en":"Error Analysis of PO-MOESP method in Closed Loop Environment --- Analysis on the estimates of A and C matrices","ja":"閉ループ環境におけるPO-MOESP法の誤差解析 --- A, C行列の推定値の解析"},"presenters":{"en":[{"name":"Ikeda Kenji"}],"ja":[{"name":"池田 建司"}]},"event":{"en":"The 2nd Multi-symposium on Control Systems","ja":"第2回制御部門マルチシンポジウム"},"publication_date":"2015-03-06","promoter":{"en":"The Society of Instrument and Control Engineers","ja":"計測自動制御学会"},"location":{"en":"Tokyo","ja":"東京"},"is_international_presentation":false},"priority":"input_data"}
line:123, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378745"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=295182","label":"url"}],"presentation_title":{"en":"Error Analysis of PO-MOESP method in Closed Loop Environment --- Analysis of the estimates of A and C matrices","ja":"閉ループ環境におけるPO-MOESP法の誤差解析 --- A, C 行列の推定値の解析"},"presenters":{"en":[{"name":"Ikeda Kenji"}],"ja":[{"name":"池田 建司"}]},"event":{"en":"第2回制御部門マルチシンポジウム","ja":"第2回制御部門マルチシンポジウム"},"publication_date":"2015-03-04","languages":["jpn"],"location":{"en":"Tokyo","ja":"東京"},"description":{"en":"This paper analyzes the estimation error of A and C matrices in PO-MOESP method in closed loop environment. The estimates of B and D in PO-MOESP method will be biased in closed loop environment while the estimates of A and C will be unbiased. So, PO-MOESP method is still applicable for the estimation of A and C matrices in closed loop environment. In the previous analysis, the plant is assumed to be stable, and there are error terms which can be neglected when the future horizon is set to be large. In the closed loop environment, the plant might be unstable and the term will not be negligible. In this paper, the error terms are analyzed in detail and their explicit formulations are derived.","ja":"This paper analyzes the estimation error of A and C matrices in PO-MOESP method in closed loop environment. The estimates of B and D in PO-MOESP method will be biased in closed loop environment while the estimates of A and C will be unbiased. So, PO-MOESP method is still applicable for the estimation of A and C matrices in closed loop environment. In the previous analysis, the plant is assumed to be stable, and there are error terms which can be neglected when the future horizon is set to be large. In the closed loop environment, the plant might be unstable and the term will not be negligible. In this paper, the error terms are analyzed in detail and their explicit formulations are derived."},"is_international_presentation":false},"priority":"input_data"}
line:124, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378746"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=295181","label":"url"}],"presentation_title":{"en":"Error Analysis of B and D matrices in PO-MOESP Method","ja":"PO-MOESP法における B, D 行列の推定誤差解析"},"presenters":{"en":[{"name":"Ikeda Kenji"},{"name":"Oku HIroshi"}],"ja":[{"name":"池田 建司"},{"name":"奥 宏史"}]},"event":{"en":"第57回自動制御連合講演会","ja":"第57回自動制御連合講演会"},"publication_date":"2014-11-10","languages":["jpn"],"location":{"en":"伊香保","ja":"伊香保"},"description":{"en":"Estimation errors of B and D matrices in PO-MOESP method are analyzed. The gap related amount plays an important role in the analysis of the estimation errors. Not only the most dominant terms but also the orders of the subordinate terms of the estimation errors are analyzed.","ja":"Estimation errors of B and D matrices in PO-MOESP method are analyzed. The gap related amount plays an important role in the analysis of the estimation errors. Not only the most dominant terms but also the orders of the subordinate terms of the estimation errors are analyzed."},"is_international_presentation":false},"priority":"input_data"}
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line:126, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378748"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=283488","label":"url"}],"presentation_title":{"en":"Error Analysis of PO-MOESP method","ja":"PO-MOESP 法の誤差解析"},"presenters":{"en":[{"name":"Ikeda Kenji"}],"ja":[{"name":"池田 建司"}]},"event":{"en":"第1回制御部門マルチシンポジウム","ja":"第1回制御部門マルチシンポジウム"},"publication_date":"2014-03-07","languages":["jpn"],"promoter":{"en":"The Society of Instrument and Control Engineers","ja":"計測自動制御学会"},"location":{"en":"Tokyo","ja":"東京"},"is_international_presentation":false},"priority":"input_data"}
line:127, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378749"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=275457","label":"url"}],"presentation_title":{"en":"OE/ARMAX","ja":"On the precision of the plant estimates based on OE/ARMAX models"},"presenters":{"en":[{"name":"Ikeda Kenji"}],"ja":[{"name":"池田 建司"}]},"event":{"en":"第56回自動制御連合講演会","ja":"第56回自動制御連合講演会"},"publication_date":"2013-11-16","languages":["jpn"],"location":{"en":"新潟","ja":"新潟"},"description":{"en":"Identification method based on ARMAX model gives better performance when the system is contaminated by a colored noise because noise model as well as plant model is estimated. However, in order to obtain an plant model, some process such as model reduction or decoupling will be required. Thus, the influence of such process to the precision of the plant model must be analyzed. This paper analyzes the estimation error in $A$ matrix of the plant model when OE model and ARMAX are adopted.","ja":"Identification method based on ARMAX model gives better performance when the system is contaminated by a colored noise because noise model as well as plant model is estimated. However, in order to obtain an plant model, some process such as model reduction or decoupling will be required. Thus, the influence of such process to the precision of the plant model must be analyzed. This paper analyzes the estimation error in $A$ matrix of the plant model when OE model and ARMAX are adopted."},"is_international_presentation":false},"priority":"input_data"}
line:128, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378750"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=275466","label":"url"}],"presentation_title":{"en":"Energy-recovery control of bipedal walking robot","ja":"二足歩行ロボットのエネルギー回生制御"},"presenters":{"en":[{"name":"松村 剛"},{"name":"Ikeda Kenji"},{"name":"Shimomura Takao"}],"ja":[{"name":"松村 剛"},{"name":"池田 建司"},{"name":"下村 隆夫"}]},"event":{"en":"2013年度 計測自動制御学会四国支部学術講演会","ja":"2013年度 計測自動制御学会四国支部学術講演会"},"publication_date":"2013-11","languages":["jpn"],"location":{"en":"高松","ja":"高松"},"description":{"en":"受動歩行は, 人間の歩行のように自然で滑らかな歩行であるため, エネルギー効率に優れていると考えられ注目されている. しかし, 受動歩行を行うと二足歩行ロボットは膝が伸びきったり, 地面に脚をついたときに運動エネルギーが減少している. このエネルギーを回生し, さらにエネルギー効率の良い歩行を実現する.","ja":"受動歩行は, 人間の歩行のように自然で滑らかな歩行であるため, エネルギー効率に優れていると考えられ注目されている. しかし, 受動歩行を行うと二足歩行ロボットは膝が伸びきったり, 地面に脚をついたときに運動エネルギーが減少している. このエネルギーを回生し, さらにエネルギー効率の良い歩行を実現する."},"is_international_presentation":false},"priority":"input_data"}
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line:131, {"insert":{"user_id":"1000039003","type":"presentations","id":"30378753"},"force":{"see_also":[{"@id":"https://web.db.tokushima-u.ac.jp/cgi-bin/edb_browse?EID=275460","label":"url"}],"presentation_title":{"en":"Variance analysis of plant model using MOESP type methods","ja":"MOESP法におけるプラントモデルの分散解析"},"presenters":{"en":[{"name":"Ikeda Kenji"}],"ja":[{"name":"池田 建司"}]},"event":{"en":"第57回システム制御情報学会研究発表講演会","ja":"第57回システム制御情報学会研究発表講演会"},"publication_date":"2013-05-15","languages":["jpn"],"location":{"en":"神戸","ja":"神戸"},"description":{"en":"Precision of the estimated plant model is often the main interest of system identification. In order to take the predictable part of the noise into account, the noise model is estimated together with the plant model by using ARMAX model. In that case, a model reduction procedure will be required in order to obtain the plant model. On the other hand, the plant model can be estimated directly by using output error (OE) model. In this paper, PI-MOESP method and PO-MOESP method are compared by analysing the signal and noise components of the estimated plant model under the assumption that there are no common poles in the plant and the noise models. The magnitude of the noise component in each method is discussed when the past or future horizon varies and it is shown that there is a possibility that PI-MOESP method gives better performance than PO-MOESP method. A numerical example is given to illustrate the discussions.","ja":"Precision of the estimated plant model is often the main interest of system identification. In order to take the predictable part of the noise into account, the noise model is estimated together with the plant model by using ARMAX model. In that case, a model reduction procedure will be required in order to obtain the plant model. On the other hand, the plant model can be estimated directly by using output error (OE) model. In this paper, PI-MOESP method and PO-MOESP method are compared by analysing the signal and noise components of the estimated plant model under the assumption that there are no common poles in the plant and the noise models. The magnitude of the noise component in each method is discussed when the past or future horizon varies and it is shown that there is a possibility that PI-MOESP method gives better performance than PO-MOESP method. A numerical example is given to illustrate the discussions."},"is_international_presentation":false},"priority":"input_data"}
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