Overview

A problem of continued interest concerns the control of vibrations in a flexible structure and the related problem of reducing structure-borne noise in structural acoustic systems. In both cases, piezoceramic patches bonded to the structures have been successfully used as control actuators. Through the application of a controlling voltage, the patches can be used to reduce structural vibrations which in turn lead to methods for reducing structure-borne noise. A PDE-based methodology for modeling, estimating physical parameters, and implementing a feedback control scheme for problems of this type is discussed. While the illustrating example is a circular plate, the methodology is sufficiently general so as to be applicable in a variety of structural and structural acoustic systems. Banks, H. T. and Brown, D. E. and Metcalf, Vern L. and Silcox, R. J. and Smith, Ralph C. and Wang, Yun Langley Research Center AD-A282665, NASA-CR-194928, NAS 1.26:194928, ICASE-94-43 NAS1-19480; NAS1-19000; F49620-93-1-0198; RTOP 505-90-52-01...

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9781725011984

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