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Proceedings Paper

Self-optimising piezoelectric damping
Author(s): M. Greaves; A. Bowles; R. McBride; T. Jarman; J. Gore
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Paper Abstract

Traditional solutions to vibration problems often employ viscoelastic materials which can be heavy, temperature-sensitive and bulky. Active solutions can provide useful damping but are often complex and expensive. This paper outlines a passive piezoelectric damping system with an adaptive controller capable of not only providing useful damping levels, but of modifying the components so as to change the circuit resonant frequency and thereby the damping effort. Experiments on simple beams and more realistic structures are described and the potential benefits and power requirements of such a system discussed. Increases in loss factor up to a factor of 10 and a high level of tuning repeatability were seen.

Paper Details

Date Published: 21 April 2008
PDF: 10 pages
Proc. SPIE 6928, Active and Passive Smart Structures and Integrated Systems 2008, 69282O (21 April 2008); doi: 10.1117/12.776320
Show Author Affiliations
M. Greaves, Cranfield Univ. (United Kingdom)
A. Bowles, QinetiQ Ltd. (United Kingdom)
R. McBride, QinetiQ Ltd. (United Kingdom)
T. Jarman, QinetiQ Ltd. (United Kingdom)
J. Gore, QinetiQ Ltd. (United Kingdom)

Published in SPIE Proceedings Vol. 6928:
Active and Passive Smart Structures and Integrated Systems 2008
Mehdi Ahmadian, Editor(s)

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