A wave-based controller design for general flexible structures

K. Matsuda, Y. Kanemitsu, S. Kijimoto

研究成果: Contribution to journalArticle査読

14 被引用数 (Scopus)

抄録

This paper treats a travelling-wave approach to suppressing vibration of general flexible structures. This approach aims to minimize all of the reflective waves at actuator positions located at the structural boundaries. A variation of the transfer matrix method shows the property that the elastic motion is obtained by superposing the waves travelling in a flexible structure; this transfer matrix method is based on the finite element method for structural analysis. Moreover, the method gives the propagation and scattering relations of the waves in the structure. Since these relations are described by a complex-valued function with respect to Laplace variable, they are transformed into a real-valued form to design a controller by a lot of state-space methods. This transformation is given by diagonalizing the unity transfer matrix into a real-Jordan form. The problem is then formulated as an H optimization problem to find a compensator minimizing the reflective waves at the actuators. The designed compensator is based only on the scattering relations at the controller positions and on the sensor-input/controller-output relations. A multispan flexible beam is used to verify the validity of the present approach. It is numerically shown that the approach is able to achieve good damping improvement in the closed-loop system.

本文言語英語
ページ(範囲)269-279
ページ数11
ジャーナルJournal of Sound and Vibration
216
2
DOI
出版ステータス出版済み - 9 17 1998

All Science Journal Classification (ASJC) codes

  • 凝縮系物理学
  • 材料力学
  • 音響学および超音波学
  • 機械工学

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