Dynamic similarity analysis for a piezo-electromechanical system

被引：0

作者：

Hou, Shuo ^{[1
]}

Tan, Xing ^{[2
]}

He, Jincheng ^{[2
]}

Deng, Xi ^{[1
]}

Xi, Chen ^{[1
]}

Lu, Guangyao ^{[1
]}

He, Huan ^{[2
]}

机构：

[1] China Nucl Power Technol Res Inst, Shenzhen, Peoples R China

[2] Nanjing Univ Aeronaut & Astronaut, State Key Lab Mech & Control Mech Struct, Nanjing 210016, Peoples R China

来源：

INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS | 2020年 / 64卷 / 1-4期

关键词：

Similarity theory; piezoelectric stack; scale factor; PIEZOELECTRIC MATERIALS; VIBRATION;

D O I：

10.3233/JAE-209312

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Most research about using piezoelectric stacks to suppress vibration of mechanical structures didn't involve the similarity problem for the piezoelectric stacks. The goal of this paper is to investigate the dynamic similarity between a prototype piezo stack and a scaled up or down piezo stack, whilst discussing the feasibility of predicting the vibration of prototype structure which use the piezoelectric stacks for vibration control. To illustrate this problem concisely, a single-DOF system consists of a proof mass and a piezo stack shunted with a series RL circuit is considered. Firstly, the governing equation of such piezo-electromechanical system in frequency domain is derived. Next the dynamic similarity of prototype and model stack is analyzed by similitude theory. After that the scaling laws are derived. Finally, a numerical simulation and relative error analysis are given to demonstrate the scaling laws.

引用

页码：103 / 110

页数：8

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