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《Journal of Vibration and Shock》 2007-01
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A STRATEGY FOR DESIGNING ERROR SENSOR BASED ON LIMITED VIBRATION VELOCITY DISTRIBUTIONS

Wu Jinwu,Jiang Zhe(Institute of Vibration and Noise,Jiangsu University,Zhenjiang 212013)  
An error sensor strategy is a key step in implementing an active structural acoustic control(ASAC).Controlling the first few order acoustic radiation modes of a plate shows to reduce efficiently its total sound radiation at low frequency.A new sensing strategy based on acoustic radiation modes for ASAC is proposed to minimize acoustic radiation from a vibrating plate.By measuring the vibrating velocity distributions at a few points of the plate and solving the underdetermined equations of the radiation mode expansion,the adjoint coefficients of the first N radiation modes can be obtained.They are used as input of controllers to form an error sensor strategy based on radiation modes and corresponding active control strategy.For a clamped-clamped plate,numerical results from active control show the feasibility of this error sensor strategy.
【Fund】: 国家自然科学基金资助项目(50475120)
【CateGory Index】: TB53
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【Citations】
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1 JIANG Zhe (Vibration and Noise Research Division, Jiangsu University Zhenjiang 212013);A modal analysis for the acoustic radiation problems: Ⅰ. Theory[J];Acta Acustica;2004-04
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【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 LEI Ye,SHENG Mei-ping,XIAO He-ye,REN Jie-an(College of Marine,Northwestern Polytechnical University,Xi'an 710072,Shaanxi,China);An Improved Formula for Calculating Radiation Efficiency of Plate Around the Cut-off Frequency[J];Acta Armamentarii;2009-07
2 ZHU Li-feng,JIANG Zhe(Institute of Vibration and Noise,Jiangsu University,Zhenjiang 212013,China);Application of piezoelectric actuators in ASAC based on radiation modes[J];Transducer and Microsystem Technologies;2007-10
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1 GUO Xin-yi, HONG Ming (Department of Naval Architecture, Dalian University of Technology, Dalian 116023 ,China);Research on Acoustic Radiation Damping by Structural Vibration[A];[C];2004
【Secondary Citations】
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1 MAO Qibo (The State Key Laborator-y of Modern Acoustic, Nanjing University Nanjing 210093) JIANG Zhe (Institute of Vibration and Noise, Jiangsu University of Science and Technology Zhengjiang 212013);Active control of sound radiation from simply supported beam using piezoelectric sensors[J];Acta Acustica;2001-06
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