Virtual sensors for active noise control in acoustic–structural coupled enclosures using structural sensing: robust virtual sensor design

Halim, Dunant; Cheng, Li; Su, Zhongqing

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 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.

Citation

Halim, D., Cheng, L., & Su, Z. (2011). Virtual sensors for active noise control in acoustic–structural coupled enclosures using structural sensing: robust virtual sensor design. Journal of the Acoustical Society of America, 129(3), https://doi.org/10.1121/1.3531941

• Journal Article Type: Article
• Acceptance Date: Dec 3, 2010
• Publication Date: Mar 1, 2011
• Deposit Date: Mar 13, 2018
• Publicly Available Date: Mar 13, 2018
• Journal: The Journal of the Acoustical Society of America
• Electronic ISSN: 0001-4966
• Publisher: Acoustical Society of America
• Peer Reviewed: Peer Reviewed
• Volume: 129
• Issue: 3
• DOI: https://doi.org/10.1121/1.3531941
• Public URL: https://nottingham-repository.worktribe.com/output/707192
• Publisher URL: https://doi.org/10.1121/1.3531941
• Additional Information: © The Acoustical Society of America.
• Contract Date: Mar 13, 2018