Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/32648
Title: Virtual sensors for active noise control in acoustic-structural coupled enclosures using structural sensing : robust virtual sensor design
Authors: Halim, D
Cheng, L 
Su, Z 
Issue Date: 2011
Publisher: Acoustical Society of America
Source: Journal of the Acoustical Society of America, 2011, v. 129, no. 3, p. 1390-1399 How to cite?
Journal: Journal of the Acoustical Society of America 
Abstract: The work was aimed to develop a robust virtual sensing design methodology for sensing and active control applications of vibro-acoustic systems. The proposed virtual sensor was designed to estimate a broadband acoustic interior sound pressure using structural sensors, with robustness against certain dynamic uncertainties occurring in an acoustic-structural coupled enclosure. A convex combination of Kalman sub-filters was used during the design, accommodating different sets of perturbed dynamic model of the vibro-acoustic enclosure. A minimax optimization problem was set up to determine an optimal convex combination of Kalman sub-filters, ensuring an optimal worst-case virtual sensing performance. The virtual sensing and active noise control performance was numerically investigated on a rectangular panel-cavity system. It was demonstrated that the proposed virtual sensor could accurately estimate the interior sound pressure, particularly the one dominated by cavity-controlled modes, by using a structural sensor. With such a virtual sensing technique, effective active noise control performance was also obtained even for the worst-case dynamics.
URI: http://hdl.handle.net/10397/32648
ISSN: 0001-4966
EISSN: 1520-8524
DOI: 10.1121/1.3531941
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