Conference Activities & Talks -

分割ピエゾフィルムを用いた平板の境界条件の同定

川崎督生,高木賢太郎,長瀬賢二,早川義一

計測自動制御学会第39回計測自動制御学会学術講演会講演論文集  2001.01   計測自動制御学会

Modal Filtering for Rectangular Plate using Equally Segmented Piezoelectric Films

K. Takagi, K. Nagase, K. Oshima, Y. Hayakawa

Proc. of the SICE/ICASE Joint Workshop  2001.01   The Society of Instrument and Control Engineers

Wave-based Analysis and Wave Control of Damped Mass-Spring Systems

H. Ojima, K. Nagase, Y. Hayakawa

Proc. of the 40th IEEE Conf. on Decision and Control  2001.01  

ソフトフィンガー型三本指ハンドロボットによる対象物の把握・操り

傍島幸之助,長瀬賢二,早川義一

計測自動制御学会第39回計測自動制御学会学術講演会講演論文集  2001.01   計測自動制御学会

Active Vibration Control of a Multi-Story Structure by Impedance Matching

Kenji Nagase, Yoshikazu Hayakawa

Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C  2001  

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This study considers active vibration control of a multi-story structure which consists of bar-connected masses repeated in the vertical direction with active mass drivers installed on the toP. As an alternative to the vibration mode approach, the traveling wave approach is applied. To implement the impedance matching controller which is proposed for a damped mass-spring system, the loop shaping design procedure is used to consider the dynamics of the actuator and the sensor noise. The designed controller has similar properties of the impedance matching controller, that is, it is efficient for the disturbance at any position and the towers with any stories. Experimental results are shown to evaluate efficiency. © 2001, The Japan Society of Mechanical Engineers. All rights reserved.

Modal filtering for simply supported plate using equally segmented piezoelectric film

K Takagi, K Nagase, K Oshima, Y Hayakawa

PROCEEDINGS OF THE 2001 AMERICAN CONTROL CONFERENCE, VOLS 1-6  2001   IEEE

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A method to measure the modal coordinates of a simply supported rectangular plate using an equally segmented piezoelectric film is studied. Modal sensors which can measure specific modal coordinates by shaping distributed piezoelectric sensors were proposed by Lee et al. However, basically, it can be only applied to one dimensional vibrations and only measure the specific modal coordinates corresponding to the shape of the sensor. In this paper, we propose a method, in which estimated modal coordinates are obtained by the sum of appropriately weighted sensor signals from the segmented piezoelectric film. This method can be easily applied to two dimensional vibrations and can measure arbitrary modal coordinates by selecting the weight. In this paper, the weight is determined to minimize a cost function. The orthogonality of the unit modal sensing signal vectors for a simply supported rectangular plate with an equally segmented piezoelectric film is proven, and the transpose of the unit model sensing signal matrix is chosen as the weight. Effects of aliasing caused by finite segmentation are also discussed. Simulation is shown to prove efficiency.

柔軟構造物のアクティブ振動制御における最近の動向-マス・バネ・ダンパ系にみるモード制御法と波動制御法

長瀬賢二,早川義一

システム/情報/制御学会誌,44巻5号  2000.05  

Wave Control for a Damped Mass-Spring System by Using the Cepstrum Analysis

K. Nagase, Y. Hayakawa

Proc. of the Fifth International Conf. on Motion and Vibration Control  2000.01   The Japan Society of Mechanical Engineers

Trends in Active Vibration Control of Flexible Structures ---Modal Control and Wave Control for a Damped Mass-Spring System

2000  

513 Modal Sensing for a Simply Supported Plate using Equally Segmented Piezoelectric Films

TAKAGI Kentaro, NAGASE Kenji, OSHIMA Kazuhiko, HAYAKAWA Yoshikazu

The Proceedings of Conference of Tokai Branch  2000   The Japan Society of Mechanical Engineers

無反射伝達関数による一様はりの縦振動の解析

長瀬賢二,早川義一

計測自動制御学会制御理論シンポジウム資料  1999.01   計測自動制御学会

三本指ハンドによる質量の未知な対象物の滑りを伴う把握と操り

小島一彦,長瀬賢二,早川義一

日本機械学会東海支部第48期総会講演会講演論文集  1999.01   日本機械学会

Active Vibration Control of Multi-Story Models by Impedance Matching

K. Nagase, Y. Hayakawa

Proc. of the Fourth International Conf. on Motion and Vibration Control  1998.01   The Japan Society of Mechanical Engineers

高次モードの不確かさを考慮したμ設計による橋主塔模型のアクティブ制振制御

長瀬賢二,早川義一

豊田理化学研究所 豊田研究報告第50号  1997.01  

ゲインスケジューリングH∞制御を用いたつり橋主塔模型の制振制御

山田繁一,長瀬賢二,早川義一

日本機械学会東海支部第46期総会講演会講演論文集  1997.01   日本機械学会

インピーダンスマッチングによる柔軟構造物の制振制御

長瀬賢二,早川義一

日本機械学会第5回運動と振動の制御シンポジウム講演論文集  1997.01   日本機械学会

Active Vibration Control of a Bridge Tower Model consiclering the Variation of Controlled Modes by μ Synthesis.

Transactions of the Japan Society of Mechanical Engineers. (Series C)  1997  

Active Vibration Control of Bridge Tower Under Construction by μ-Synthesis

K. Nagase, Y. Hayakawa

Proc. of the Third International Conf. on Motion and Vibration Control  1996.01   The Japan Society of Mechanical Engineers

制振モードの変動を考慮した橋主塔モデルの防振制御

長瀬賢二,早川義一

日本機械学会東海支部第45期総会講演会講演論文集  1996.01   日本機械学会

Active Vibration Control of 2-bed Pendulum

Kenji NAGASE, Hiroshi OBA, Yoshikazu HAYAKAWA, Hiroshi MIZUNO

Transactions of the Japan Society of Mechanical Engineers. (Series C)  1996