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Optical Engineering

Optical fiber sensors for active structural acoustic control
Author(s): Brian R. Fogg; William V. Miller; Ashish M. Vengsarkar; Richard O. Claus; Robert L. Clark; Chris R. Fuller
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Paper Abstract

We present the first demonstration of active acoustic control using optical fiber sensors. The fiber sensors are oriented symmetrically about the vertical centerline of a thin, simply supported baffle plate and are configured for the most effective detection of the odd-odd plate modes. The output from the fiber sensor is used as an error signal, a least-mean-square algorithm is used for digital processing, and control is achieved using a single piezoelectric actuator. Preliminary results obtained from the use of elliptical-core, two-mode fiber sensors attached to the plate show effective acoustic attenuation of 25 dB in on-resonance cases and 10 dB in off-resonance cases.

Paper Details

Date Published: 1 January 1992
PDF: 6 pages
Opt. Eng. 31(1) doi: 10.1117/12.56057
Published in: Optical Engineering Volume 31, Issue 1
Show Author Affiliations
Brian R. Fogg
William V. Miller, Virginia Polytechnic Institute and State Univ. (United States)
Ashish M. Vengsarkar, AT&T Bell Labs. (United States)
Richard O. Claus, Virginia Polytechnic Institute and State Univ. (United States)
Robert L. Clark, Virginia Polytechnic Institute and State Univ. (United States)
Chris R. Fuller, Virginia Polytechnic Institute and State Univ. (United States)


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