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Proceedings Paper

Active interior acoustics control of bandlimited disturbances
Author(s): Arun Sampath; Balakumar Balachandran
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Paper Abstract

Extensions of our previous analytical and experimental investigations into active control of bandlimited disturbances in a three-dimensional enclosure are presented. The frequency range of the bandlimited disturbance is chosen to encompass structural and/or enclosure resonances. Distributed piezoceramic actuators and distributed polyvinylidene fluoride (PVDF) sensors are mounted on one of the enclosure boundaries. Acoustic sensors are used inside and outside the enclosure. An analytical formulation based on a state-space model is developed for local vibration control on an enclosure boundary and/or local noise control inside the enclosure for bandlimited disturbances. The error sensor signals are minimized by using digital feedforward control schemes based on filtered-U gradient descent algorithms. Analytical predictions from the current work are compared with the results obtained in our previous experimental investigations and discussed.

Paper Details

Date Published: 6 June 1997
PDF: 12 pages
Proc. SPIE 3041, Smart Structures and Materials 1997: Smart Structures and Integrated Systems, (6 June 1997); doi: 10.1117/12.275641
Show Author Affiliations
Arun Sampath, Univ. of Maryland/College Park (United States)
Balakumar Balachandran, Univ. of Maryland/College Park (United States)

Published in SPIE Proceedings Vol. 3041:
Smart Structures and Materials 1997: Smart Structures and Integrated Systems
Mark E. Regelbrugge, Editor(s)

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