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Proceedings Paper

Power regeneration in active vibration isolation systems
Author(s): Nikola Vujic; Donald J. Leo; Douglas K. Lindner
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Paper Abstract

The power requirements imposed on an active vibration control system are quite important to the overall system design. In order to improve the efficiency we analyze different feedback control strategies which will provide electrical energy regeneration. The active isolation system is modeled in a state-space form for two different types of actuators: a piezoelectric stack actuator and a linear electromagnetic (EM) actuator. During regenerative operation, the power is flowing from the mechanical disturbance through the electromechanical actuator and its switching drive into the electrical storage device (batteries or capacitors). We demonstrate that regeneration occurs when controlling one or both of the flow states (velocity and/or current). This regenerative control strategy affects the closed loop dynamics of the isolator which sees its damping reduced.

Paper Details

Date Published: 31 July 2003
PDF: 12 pages
Proc. SPIE 5052, Smart Structures and Materials 2003: Damping and Isolation, (31 July 2003); doi: 10.1117/12.483957
Show Author Affiliations
Nikola Vujic, Virginia Polytechnic Institute and State Univ. (United States)
Donald J. Leo, Virginia Polytechnic Institute and State Univ. (United States)
Douglas K. Lindner, Virginia Polytechnic Institute and State Univ. (United States)


Published in SPIE Proceedings Vol. 5052:
Smart Structures and Materials 2003: Damping and Isolation
Gregory S. Agnes; Kon-Well Wang, Editor(s)

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