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RESEARCH PAPERS

Vibration Control of Rotationally Periodic Structures Using Passive Piezoelectric Shunt Networks and Active Compensation

[+] Author and Article Information
J. Tang, K. W. Wang

Structural Dynamics and Controls Lab, Mechanical Engineering Department, The Pennsylvania State University, University Parl, PA 16802

J. Vib. Acoust 121(3), 379-390 (Jul 01, 1999) (12 pages) doi:10.1115/1.2893991 History: Received April 01, 1998; Revised February 01, 1999; Online February 26, 2008

Abstract

This paper proposes a multi-mode vibration suppression scheme for rotationally periodic structures. Identical active-passive hybrid piezoelectric networks are applied on each of the substructures, where active charge and current feedback is used together with passive piezoelectric shunts to optimize the network performance. By exploiting the rotational periodicity, a new algorithm is synthesized to analytically determine the control parameters. It is shown that this hybrid approach can suppress all the spatial harmonics, which cannot be achieved by purely passive piezoelectric shunts. It is also observed that such a configuration requires much less control effort (voltage and power) when compared to a purely active approach.

Copyright © 1999 by The American Society of Mechanical Engineers
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