1 January 1992 Optical fiber sensors for active structural acoustic control
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Optical Engineering, 31(1), (1992). doi: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.
Brian R. Fogg, William V. Miller, Ashish M. Vengsarkar, Richard O. Claus, Robert L. Clark, 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
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