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Proceedings Paper

Adaptive damping of piezoelastic structures via digital implementation of an electrical impedance
Author(s): Thomas Rittenschober; Johannes Korak
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Paper Abstract

This contribution is concerned with adaptive damping of plate-like structures equipped with a piezoelectric patch. Damping of mechanical modes can be accomplished by connecting simple electrical impedances at the terminals of the piezoelectric patch. For reason of miniaturization and robustness with respect to a shift in eigenfrequencies of the mechanical structure, the authors propose the algorithmic implementation of the electrical behavior of the impedance on a microcontroller. The digital approach enables real time updating of parameters associated with the artificial electrical impedance. The problem of finding optimal parameters is addressed and an update law for online tuning of parameters is introduced. The performance of the algorithm is evaluated on the mathematical model of a Kirchhoff plate equipped with a piezoelectric patch shunted by a resistor.

Paper Details

Date Published: 31 March 2010
PDF: 8 pages
Proc. SPIE 7647, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2010, 76470Q (31 March 2010); doi: 10.1117/12.847077
Show Author Affiliations
Thomas Rittenschober, Profactor Produktionsforschungs GmbH (Austria)
Johannes Korak, Profactor Produktionsforschungs GmbH (Austria)

Published in SPIE Proceedings Vol. 7647:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2010
Masayoshi Tomizuka, Editor(s)

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