Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/2784
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Type: Journal article
Title: Near-field sensing strategies for the active control of the sound radiated from a plate
Author: Berry, A.
Qiu, X.
Hansen, C.
Citation: Journal of the Acoustical Society of America, 1999; 106(6):3394-3406
Publisher: AMER INST PHYSICS
Issue Date: 1999
ISSN: 0001-4966
1520-8524
Statement of
Responsibility: 
A. Berry, X. Qiu and C. H. Hansen
Abstract: <jats:p>When designing an active control system to globally control the far-field sound radiation from a vibrating surface, a challenging problem is to properly define the near-field acoustic sensing strategy and the type of cost function to be minimized by the controller. The strategy of sensing and minimizing the near-field active intensity at discrete locations in the active control of free field radiation from a vibrating plate is investigated in this paper. The optimal minimization of the sum of the near-field, normal active sound intensities at the error sensor locations using acoustic control sources is derived for this problem, and the results obtained are compared to the minimization of the sum of the near-field squared pressures. Some of the difficulties associated with sound intensity minimization are pointed out.</jats:p>
Rights: © 1999 Acoustical Society of America
DOI: 10.1121/1.428193
Published version: http://dx.doi.org/10.1121/1.428193
Appears in Collections:Aurora harvest 6
Environment Institute publications
Mechanical Engineering publications

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