Piezoelectric Array Sensing for Real-Time, Broad-Band Sound Radiation Measurement

[+] Author and Article Information
A. Preumont, A. François, S. Dubru

Active Structures Laboratory, Université Libre de Bruxelles, CP. 165-42, 50 Av. F.D. Roosevelt, B-1050 Brussels, Belgium

J. Vib. Acoust 121(4), 446-452 (Oct 01, 1999) (7 pages) doi:10.1115/1.2894001 History: Received October 01, 1998; Online February 26, 2008


This paper proposes a noise radiation sensor consisting of an array of independent piezoelectric patches connected to an adaptive linear combiner. The coefficients of the linear combiner are adapted in such a way that the mean-square error between the reconstructed volume displacement (or velocity) and either numerical or experimental data is minimized. A numerical study is conducted, to analyze the influence of the size of the piezoelectric array on the reconstructed volume velocity.

Copyright © 1999 by The American Society of Mechanical Engineers
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