Spatial filters for shape control

Douglas K. Lindner; Karl M. Reichard

doi:10.1117/12.138155

10 July 1992 Spatial filters for shape control

Proceedings Volume 1696, Controls for Optical Systems; (1992) https://doi.org/10.1117/12.138155
Event: Aerospace Sensing, 1992, Orlando, FL, United States

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.

Citation Download Citation

Douglas K. Lindner and Karl M. Reichard "Spatial filters for shape control", Proc. SPIE 1696, Controls for Optical Systems, (10 July 1992); https://doi.org/10.1117/12.138155

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