ACOUSTIC POWER SUPPRESSION OF A PANEL STRUCTURE USING H∞OUTPUT FEEDBACK CONTROL |
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| Authors: | S SIVRIOGLUN TANAKA I YUKSEK |
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| Institution: | a Mechanical Engineering Laboratory, Sound and Vibration Division, Namiki 1-2, Tsukuba-shi, 305-8564, Japanf1selim@mec2.tm.chiba-u.ac.jpf1b Tokyo Metropolitan Institute of Technology, 6-6 Asahigaoka, Hino-shi, 191-0065, Tokyo, Japanc Faculty of Mechanical Engineering, Yildiz Technical University, Istanbul, Turkey |
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| Abstract: | This paper presents a robust control system design for suppressing the radiated acoustic power emitted from a vibrating planar structure, and spillover effect caused by neglected high-frequency modes. A state-space model of a simply supported panel structure is derived and an output equation is formed based on the one-dimensional PVDF film sensors. An output feedback H∞control is designed by introducing a multiplicative perturbation which represents unmodelled high-frequency dynamics in the control system. The simulation and experimental results demonstrated significant decrease in sound radiation for the considered structural power modes in control. |
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