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Proceedings Paper

Spatial filters for shape control
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Paper Abstract

Recently there has emerged a new class of sensors, called spatial filters, for structures which respond over a significant gauge length. Examples include piezoelectric laminate PVDF film, modal domain optical fiber sensors, and holographic sensors. These sensors have a unique capability in that they can be fabricated to locally alter their sensitivity to the measurand. In this paper we discuss how these sensors can be used for the implementation of control algorithms for the suppression of acoustic radiation from flexible structures. Based on this relationship between the total power radiated to the far field to the modal velocities of the structure, we show how the sensor placement to optimize the control algorithm to suppress the radiated power.

Paper Details

Date Published: 10 July 1992
PDF: 12 pages
Proc. SPIE 1696, Controls for Optical Systems, (10 July 1992); doi: 10.1117/12.138155
Show Author Affiliations
Douglas K. Lindner, Virginia Polytechnic Institute and State Univ. (United States)
Karl M. Reichard, The Pennsylvania State Univ. (United States)

Published in SPIE Proceedings Vol. 1696:
Controls for Optical Systems
John A. Breakwell, Editor(s)

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