Misc - NAGASE Kenji

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     2574 - 2579   2001.01  [Refereed]

マスタースレーブシステムを用いた多指ハンドロボットによる把握・操り

神保智彦,長瀬賢二,早川義一

日本機械学会東海支部第50期総会講演会講演論文集 ( 日本機械学会 )    pp.69-70   2001.01

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 ( IEEE )    1593 - 1598   2001  [Refereed]

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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.

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   67 ( 658 ) 1814 - 1819   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.

DOI

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     pp.253-258   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 ( The Japan Society of Mechanical Engineers )    Vol. 1, pp.121-126   2000.01  [Refereed]

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

  44 ( 5 ) 253 - 258   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 ( The Japan Society of Mechanical Engineers )  2000 ( 0 ) 279 - 280   2000

DOI

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 ( 計測自動制御学会 )    pp.335-338   1999.01

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 ( 日本機械学会 )    pp.79-80   1999.01

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 ( The Japan Society of Mechanical Engineers )    Vol. 1, pp.103-108   1998.01  [Refereed]

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 ( 日本機械学会 )    pp. 312-315   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 ( 日本機械学会 )    pp. 321-322   1997.01

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     13-24   1997.01

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)   63 ( 607 ) 906 - 913   1997

DOI

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 ( 日本機械学会 )    pp. 293-294   1996.01

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 ( The Japan Society of Mechanical Engineers )    Vol. 3, pp.81-86   1996.01  [Refereed]

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)   62 ( 593 ) 41 - 48   1996

DOI

建設途上を想定したつり橋主塔モデルのμ設計による防振制御

長瀬賢二,大庭弘,早川義一

日本機械学会 Dynamics and Design Conference '95講演論文集 ( 日本機械学会 )    pp. 227-330   1995.01

μ設計による橋主塔モデルのアクティブ制振制御

長瀬賢二,大庭弘,早川義一

システム制御情報学会第39回システム制御情報学会研究発表講演会講演論文集 ( システム制御情報学会 )    pp. 283-284   1995.01