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Proceedings Paper

Time-domain analysis of active control of sound transmission through an elastic plate backed by a rigid rectangular cavity
Author(s): Shozo Koshigoe; Graham K. Ellis
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Paper Abstract

A time domain model for simulating the noise transmission through an elastic plate into a rigid cavity has been developed. This model is used to study the noise attenuation capability and transient-convergence of the filtered-x LMS feedforward control algorithm. Piezoelectric transducers (PZTs) are considered to be bonded on the elastic plate and are used as actuators in the control scheme. In this study, the fully coupled acoustic-plate interaction equations are solved using time dependent Green's function techniques, where a time varying air mean density is considered. The effects that the time varying mean density has on the transmission of sound and on the stability of the filtered-x LMS adaptive controller are discussed.

Paper Details

Date Published: 1 May 1994
PDF: 9 pages
Proc. SPIE 2192, Smart Structures and Materials 1994: Mathematics and Control in Smart Structures, (1 May 1994); doi: 10.1117/12.174225
Show Author Affiliations
Shozo Koshigoe, The Aerospace Corp. (United States)
Graham K. Ellis, The Aerospace Corp. (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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