Sound Transmission Control through Rectangular Plate by Using Piezoelectric Ceramics as Actuators and Sensors

Abstract

This paper describes the active control of sound transmission through a clamped rectangular plate by using piezoelectric ceramics as actuators and sensors. Optimal use of the piezo electric ceramic actuator is investigated theoretically by using the transfer function from incident sound pressure to radiated sound pressure and the first order approximated damping ratio. By apply ing direct velocity feedback control by five pieces of the actuators, substantial reduction of peak level at eigen mode frequency is obtained below the frequency range of about 1500 Hz. The use of piezo electric ceramics as actuators and as sensors fails in the direct velocity feedback control experiment, but has potential for the direct position feedback control experiment.

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References

Akishita, S. , Y. Mitani and H.G. Lee 1991 "Active Control of Sound Transmission through Rectangular Plate by Piezoelectric Actuator", Proceedings of the Conference on Recent Advances in Active Control of Sound and Vibration , April 15-17, 1991, pp S.22-S.34

Aubrunn, J.N. 1980 "Theory of the Control of Structures by Low-Authority Controllers ", J of Guidance and Control , 3(5) 444.

Fuller, C.R. 1990 'Active Control of Sound Transmission/Radiation from Elastic Plates by Vibration Inputs; Analysis", J. of Sound and Vibration, 136(1) 1

Meirovitch, L. and S. Thngjtham 1990. "Active Control of Sound Radiation Pressure", J of Vibration and Acoustics, 112 237

Thomas, D.R. , P.A. Nelson and S.J. Elliot. 1990. "Experiment on the Active Control of the Transmission of Sound through a Clamped Rectangular Plate", J. of Sound and Vibration, 139(2) 351