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22 May 1995 Smart large-area actuators
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Local control of an acoustic projector or boundary can, in principal, be accomplished using large area locally controlled actuators with an imbedded or intimately bonded sensor array. However, in practice the marriage of an actuator and sensor array is not straightforward. Issues of area sampling, nearfield sensing, internal resonances, and both direct and extraneous coupling mechanisms all can contribute to complicate the system transfer functions and limit the applicability of this approach. In a basic research study, this paper considers the design and performance of a generic smart actuator for underwater acoustic applications. Both surface pressure and surface velocity sensing are included. Models are presented for understanding the importance of some of the mechanisms and construction issues involved, and for predicting the resulting system transfer functions. The predictions are compared with freefield experimental results.
© (1995) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Robert D. Corsaro and Brian H. Houston "Smart large-area actuators", Proc. SPIE 2441, Smart Structures and Materials 1995: Smart Materials, (22 May 1995);

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