Piezoelectric Actuator Configuration Optimization for Active Structural Acoustic Control in Aircraft
Date Published: 1997-05-01
Paper Number:971461
DOI: 10.4271/971461
Citation:
Gibbs, G., Fuller, C., and Paxton, S., "Piezoelectric Actuator Configuration Optimization for Active Structural Acoustic Control in Aircraft," SAE Technical Paper 971461, 1997, doi:10.4271/971461.
Author(s):
Gary P. Gibbs - NASA Langley Research Center
Chris R. Fuller - Virginia Polytechnic Institute and State Univ.
Scott Paxton - Virginia Polytechnic Institute and State Univ.
Abstract:
This paper has presented a technique for the determination of an optimal configuration of fuselage mounted piezoelectric actuators for active structural acoustic control of interior noise in aircraft. The technique has demonstrated much potential in preliminary experiments where actuators were configured to couple into the first principal component of the acoustically coupled fuselage vibration. In this test, average reductions of 6 dB at the error microphones and 4 dB at five auxiliary microphones were observed for a pure tone disturbance at the left forward engine pylon of a business jet. This disturbance was used to simulate an oscillating force due to engine unbalance.
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