Passive control of multiple structural resonances with piezoelectric vibration absorbers

被引：15
|
作者：
Raze, G. [1 ]
Dietrich, J. [1 ]
Kerschen, G. [1 ]
机构：
[1] Univ Liege, Space Struct & Syst Lab, Aerosp & Mech Engn Dept, Quartier Polytech 1 B52-3,Allee Decouverte 9, B-4000 Liege, Belgium
来源：
JOURNAL OF SOUND AND VIBRATION | 2021年 / 515卷
关键词：
Passive control law; Multimodal vibration mitigation; Piezoelectric shunt; Digital control; OPTIMIZATION; IMPLEMENTATION; SUPPRESSION; CALIBRATION; CIRCUITS; SHUNTS;
D O I：
10.1016/j.jsv.2021.116490
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
A novel sequential tuning procedure for passive piezoelectric shunts targeting multiple structural modes is proposed in this work. The control authority on each targeted mode can be quantitatively chosen ab initio and is shown to be limited by passivity requirements, which highlights the fundamental limitations of multimodal piezoelectric shunts. Based on effective characteristics of the piezoelectric system around resonance, electrical damping ratios and resonance frequencies are derived using well-established single-mode formulae from the literature, thereby fully specifying the characteristics of the shunt impedance. The proposed approach is numerically verified and experimentally validated on piezoelectric beams by emulating the shunt with a digital vibration absorber.
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页数：20
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