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Proceedings Paper

Variable hybrid piezoelectric damping based on control power requirement
Author(s): Kazuhiko Adachi; Yoshihumi Awakura; Takuzo Iwatsubo
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Paper Abstract

A new hybrid piezoelectric damping system with switching control are proposed here in order to reduce the control power requirement of piezoelectrical damping augmentation for flexible structures. There are two types of hybrid piezoelectric damping; one is a series type (integrated type, type I) where piezoelectric actuators are actively driven by the external voltage source with the passive tuned RL shunting circuit in series. The other is a separated type in collocated condition (type II) where the external voltage sources and the passive tuned RL shunting circuits are separated from each other, and both piezoelectric actuators to be used to the active and passive dampings are collocated on the host structure. The types I - II switching rule of the variable hybrid piezoelectric damping is determined by the vibration condition on the host structure. Availability of the proposed variable hybrid piezoelectric damping system is experimentally demonstrated by using a simple cantilever beam example with surface bonded piezo-elements. The experimental results indicate that the variable hybrid piezoelectric damping system is effective comparing the single type of hybrid piezoelectric damping system (type I or type II) from the viewpoint of active control power requirement.

Paper Details

Date Published: 2 July 2001
PDF: 12 pages
Proc. SPIE 4331, Smart Structures and Materials 2001: Damping and Isolation, (2 July 2001); doi: 10.1117/12.432724
Show Author Affiliations
Kazuhiko Adachi, Kobe Univ. (Japan)
Yoshihumi Awakura, Kobe Univ. (Japan)
Takuzo Iwatsubo, Kobe Univ. (Japan)

Published in SPIE Proceedings Vol. 4331:
Smart Structures and Materials 2001: Damping and Isolation
Daniel J. Inman, Editor(s)

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