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Proceedings Paper

PDE-based methodology for modeling, parameter estimation and feedback control in structural and structural acoustic systems
Author(s): H. Thomas Banks; Donald E. Brown; V. L. Metcalf; Richard J. Silcox; Ralph C. Smith; Yun Wang
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Paper Abstract

A problem of continued interest concerns the control of vibrations in a flexible structure and the related problem of reducing structure-borne noise in structural acoustic systems. In both cases, piezoceramic patches bonded to the structures have been successfully used as control actuators. Through the application of a controlling voltage, the patches can be used to reduce structural vibrations which in turn leads to methods for reducing structure-borne noise. A PDE-based methodology for modeling, estimating physical parameters, and implementing a feedback control scheme for problems of this type is discussed. While the illustrating example is a circular plate, the methodology is sufficiently general so as to be applicable in a variety of structural and structural acoustic systems.

Paper Details

Date Published: 1 May 1994
PDF: 10 pages
Proc. SPIE 2192, Smart Structures and Materials 1994: Mathematics and Control in Smart Structures, (1 May 1994); doi: 10.1117/12.174224
Show Author Affiliations
H. Thomas Banks, North Carolina State Univ. (United States)
Donald E. Brown, NASA Langley Research Ctr. (United States)
V. L. Metcalf, NASA Langley Research Ctr. (United States)
Richard J. Silcox, NASA Langley Research Ctr. (United States)
Ralph C. Smith, Iowa State Univ. (United States)
Yun Wang, North Carolina State Univ. (United States)


Published in SPIE Proceedings Vol. 2192:
Smart Structures and Materials 1994: Mathematics and Control in Smart Structures
H. Thomas Banks, Editor(s)

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