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Optimization of the number and the positions of error sensors in adaptive active sound control
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作者 WANG Chong SUN Jincai and SUN Zhaohui(Institute of Acoustical Engineering, Northwestern Polytechnical University, Xi’an 710072) 《Chinese Journal of Acoustics》 1994年第2期121-130,共10页
In recent years, researches on the attenuation theory of active sound control and the technique of adaptive active sound control have becn made independently. By optimizing the number and the positions of error sensor... In recent years, researches on the attenuation theory of active sound control and the technique of adaptive active sound control have becn made independently. By optimizing the number and the positions of error sensors, a relation between them is found in this paper. The method and the formulae for optimization are given. The factors affecting the attenuation effects are discussed. All theoretical results are verilied by experiments and the attenuation effects are satisfied. 展开更多
关键词 OPTIMIZATION Error senser Complex strength Adaptive active sound control
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Control of sound radiation from vibrating structure using active constrained layer: Ⅱ. Numerical calculation
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作者 YANG Jun LI Xiaodong TIAN Jing(Institute Of Acoustics, Academia Sinica Beijing 100080) 《Chinese Journal of Acoustics》 1999年第2期163-170,共8页
The solution to the state response of active constrained layer and the expression of the sound field radiated from the vibrating structure are given, and the damping mechanisms of active constrained layer (ACL) are di... The solution to the state response of active constrained layer and the expression of the sound field radiated from the vibrating structure are given, and the damping mechanisms of active constrained layer (ACL) are discussed. Compaxisons are made with the passive constrained layer (PCL) and the traditional active control method in reducing the structural vibration. The numerical results indicate that: using the active constrained layer damping (ACLD) treatment to dissipate energyt not only the vibration amplitude of structtire is reduced, but also the sound radiated from vibrating structure is suppressed 展开更多
关键词 MPA control of sound radiation from vibrating structure using active constrained layer
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