Optical fiber sensors for active structural acoustic control

Brian R. Fogg; William V. Miller III; Ashish M. Vengsarkar; Richard O. Claus; Robert L. Clark; Chris R. Fuller

doi:10.1117/12.56057

1 January 1992 Optical fiber sensors for active structural acoustic control

Brian R. Fogg, William V. Miller III, Ashish M. Vengsarkar, Richard O. Claus, Robert L. Clark, Chris R. Fuller

Author Affiliations +

Optical Engineering, Vol. 31, Issue 1, (January 1992). https://doi.org/10.1117/12.56057

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.

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Brian R. Fogg, William V. Miller III, Ashish M. Vengsarkar, Richard O. Claus, Robert L. Clark, and Chris R. Fuller "Optical fiber sensors for active structural acoustic control," Optical Engineering 31(1), (1 January 1992). https://doi.org/10.1117/12.56057

Published: 1 January 1992

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