Title: Piezoelectric and control optimisation of smart structures for vibration and sound suppression

Authors: Kimiaki Ono, Itsuro Kajiwara, Shinichi Ishizuka

Addresses: Department of Mechanical and Aerospace Engineering, Tokyo Institute of Technology, 2-12-1, O-okayama, Meguro-ku, Tokyo 152-8552, Japan. ' Department of Mechanical and Aerospace Engineering, Tokyo Institute of Technology, 2-12-1, O-okayama, Meguro-ku, Tokyo 152-8552, Japan. ' Cybernet Systems Co., Ltd. Sumitomo Fudosan Otowa Bldg. 9-3, Otsuka 2-chome Bunkyo-ku, Tokyo, 112-0012, Japan

Abstract: This paper proposes a multidisciplinary design optimisation of smart structures for vibration and sound suppression. The smart structure consists of a panel with one fixed end, two piezoelectric actuators and a control system. The control system is designed according to the H₂ specification with a reduced-order modal model derived from FEM and modal analysis. The sound pressure level of sound radiation from the vibrating panel is calculated by BEM. The design problem for improving the H₂ performance is defined and then the piezoelectric actuators and the control system are simultaneously optimised by the presented approach, resulting in an enhanced performance for the vibration and sound suppression.

Keywords: control optimisation; genetic algorithm; smart structures; sound suppression; vibration suppression; optimal design; piezoelectric actuators; optimal control; FEM; finite element method; modal analysis; boundary element method; BEM.

DOI: 10.1504/IJVD.2007.012303

International Journal of Vehicle Design, 2007 Vol.43 No.1/2/3/4, pp.184 - 199

Published online: 04 Feb 2007 *

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