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Proceedings Paper

Design of optimal actuators for piezoelastic structures based on analytical computations and measurement data
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Paper Abstract

A hybrid approach involving both analytical computations and measurement data is proposed for designing optimal actuators for piezoelastic structures. The analytical part comprises the linear mathematical structure of models of beams, plates or membranes which are appropriately described by mode shapes and modal paramters, i.e. eigenfrequencies, modal gains and modal damping. Also, the governing differential equation for perfect compensation of external loads due to piezoelectric actuation is applied. The measurement part relies on identification of mode shapes and parameters under an external load using experimental modal analysis. The real-world data is fed into the analyical part with the ultimate goal of achieving a match between the modal gains due to external loading and piezoelectric actuation. The algorithm which can be extended to various mathematical models of piezoelastic structures, is evaluated on a beam structure which is clamped at both ends.

Paper Details

Date Published: 30 March 2009
PDF: 7 pages
Proc. SPIE 7292, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2009, 72922D (30 March 2009); doi: 10.1117/12.817519
Show Author Affiliations
Thomas Rittenschober, PROFACTOR GmbH (Austria)
Andreas Dantele, PROFACTOR GmbH (Austria)


Published in SPIE Proceedings Vol. 7292:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2009
Masayoshi Tomizuka, Editor(s)

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