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Proceedings Paper

Active control of multiple tones transmitted into an enclosure
Author(s): Chang Won Ahn; Balakumar Balachandran
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Paper Abstract

The present work is a continuation of our previous efforts, in which active control of deterministic bandlimited and tonal disturbances in an enclosure with a flexible boundary has been addressed. Multiple tones in the bandwidth of 40 Hz to 1000 Hz are transmitted into the enclosure and local noise control is attempted by using a multi-input, multi- output, digital feedforward control scheme. The specific focus of the current work is on actuator grouping, and this issue is explored through numerical and experimental investigations. It is demonstrated that actuator grouping can be beneficial for controlling enclosed sound fields dominated by widely separated tones.

Paper Details

Date Published: 27 July 1998
PDF: 10 pages
Proc. SPIE 3329, Smart Structures and Materials 1998: Smart Structures and Integrated Systems, (27 July 1998); doi: 10.1117/12.316897
Show Author Affiliations
Chang Won Ahn, Univ. of Maryland/College Park (United States)
Balakumar Balachandran, Univ. of Maryland/College Park (United States)

Published in SPIE Proceedings Vol. 3329:
Smart Structures and Materials 1998: Smart Structures and Integrated Systems
Mark E. Regelbrugge, Editor(s)

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