具有分支电路的半主动可控压电阻尼减振  

Shock Absorption by Semiactive Controlled Piezoelectric Damping with Branch Circuit

作　　者：刘俊[1] 童昕[1] 

机构地区：[1]华侨大学机电及自动化学院,福建泉州362021

出　　处：《华侨大学学报（自然科学版）》2006年第1期79-81,共3页Journal of Huaqiao University(Natural Science)

基　　金：福建省自然科学基金资助项目(E0510020)

摘　　要：分支电路系统中不同电器元件及其不同布置组合,可以构成不同的半主动压电阻尼系统.文中给出一种新型的半主动分支电路的可控压电阻尼技术,并以一个悬臂梁为例,对该方法的有效性进行验证.对悬臂梁处在不同模态或不同位置单个传感器的情况,通过调节可变电容,使电路的振荡频率和模态频率相吻合,从而得到振幅减少的百分比和最佳传感器位置.Different semiactive system of pietoelectric damping can be obtained using different components of electric appliance with different collocations and combinations in a branch circuit system. A new method of controlled plezoelectric damping is proposed, and its effectiveness is verified by a case study. This case study is presented under the circumstances that the cantilever beam is in different modes or single transducer is in different positions, to find that oscillation frequencies of the circuit system can be well fit for the mode frequencies by regulating the variable capacitors, and thus, the percentage of decreased amplitude and the optimal position of transducer can be obtained.

关 键 词：压电阻尼 分支电路 可控减振 半主动控制 

分 类 号：TB535.1[理学—物理]