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Proceedings Paper

Active control methodology for thermal distortion management of smart composite structures
Author(s): Tamunoiyala S. Koko; Irewole R. Orisamolu; Malcolm J. Smith; Unyime O. Akpan
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Paper Abstract

This paper presents an integrated finite element based computational methodology for analyzing smart composite structures with piezoelectric sensors and actuators. The method accounts for the coupling of the mechanical, electrical and thermal fields, which these structural systems will be subjected to in practical applications. 3D thermopiezoelectric composite finite elements are used to model the host structure and the piezoelectric sensors and actuators. The finite element equations are integrated with control algorithms based on the linear quadratic regulator, independent modal space control and the modified independent modal space control, to provide active vibration control capabilities. The capabilities have been incorporated into a computer program called SMARTCOM. Numerical examples illustrating the computation and/or control of deformations due to thermal excitations are presented and comparisons are made to other methods where possible. The present method provides accurate modeling of the smart structures and is seen as a convenient methodology, in that it permits modeling of the complex behavior of the smart structure in one integrated package.

Paper Details

Date Published: 24 July 1998
PDF: 12 pages
Proc. SPIE 3323, Smart Structures and Materials 1998: Mathematics and Control in Smart Structures, (24 July 1998); doi: 10.1117/12.316305
Show Author Affiliations
Tamunoiyala S. Koko, Martec Ltd. (Canada)
Irewole R. Orisamolu, Martec Ltd. (United States)
Malcolm J. Smith, Martec Ltd. (Canada)
Unyime O. Akpan, Martec Ltd. (Canada)

Published in SPIE Proceedings Vol. 3323:
Smart Structures and Materials 1998: Mathematics and Control in Smart Structures
Vasundara V. Varadan, Editor(s)

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