Virtual sensors for active noise control in acoustic–structural coupled enclosures using structural sensing: robust virtual sensor designTools Halim, Dunant, Cheng, Li and Su, Zhongqing (2011) Virtual sensors for active noise control in acoustic–structural coupled enclosures using structural sensing: robust virtual sensor design. The Journal of the Acoustical Society of America, 129 (3). pp. 1390-1399. ISSN 0001-4966 Full text not available from this repository.
Official URL: https://doi.org/10.1121/1.3531941
AbstractThe 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 vir- tual 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 sen- sor 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.
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