Simulation study of active control of vibro-acoustic response by sound pressure feedback using modal pole assignment strategy

被引：9
|
作者：
Li, Sheng [1 ,2 ]
Yu, Danzhu [1 ]
机构：
[1] Dalian Univ Technol, Fac Vehicle Engn & Mech, Sch Naval Architecture, State Key Lab Struct Anal Ind Equipment, Dalian 116024, Peoples R China
[2] Collaborat Innovat Ctr Adv Ship & Deep Sea Explor, Shanghai, Peoples R China
来源：
JOURNAL OF LOW FREQUENCY NOISE VIBRATION AND ACTIVE CONTROL | 2016年 / 35卷 / 03期
关键词：
Sound pressure feedback; active control; modal pole placement; acoustic radiation; structural vibration; STRUCTURAL-ACOUSTIC CONTROL; SIMPLY SUPPORTED PLATES; VELOCITY FEEDBACK; VIBRATION CONTROL; CONTROL-SYSTEM; RADIATION; ACTUATORS; PLACEMENT; DESIGN;
D O I：
10.1177/0263092316659407
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
The active control of vibro-acoustic response using sound pressure feedback is numerically studied. An output feedback approach based on sound pressure measurement for modal pole placement is proposed. The control performance is evaluated for the case of a baffled plate. The finite element method and the Rayleigh integral are used to model the structural vibration and sound radiation. Measures of observability of a mode in pressure outputs and the effect of time delay in the pressure feedback loop are discussed. Numerical results show that the chosen poles may be assigned to predetermined values by the active control with complex gains. It is also demonstrated that the pressure feedback control may make a very large reduction in acoustic radiation and structural vibration of the controlled modes in a wide frequency band when using constant gain at a lower frequency.
引用
收藏
页码：167 / 186
页数：20
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