Modeling of a micro vibration energy harvester considering size effect

被引：0
|
作者：
Li C. [1 ,2 ]
Huo R. [1 ,2 ]
Wang W. [1 ,2 ]
Zhao C. [3 ]
机构：
[1] School of Mechanical Engineering, Shandong University, Ji'nan
[2] Key Lab. of High Efficiency and Clean Mechanical Manufacture, Shandong University, Ministry of Education, Ji'nan
[3] 62041 troops, People's Liberation Army, Xinxiang
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2019年 / 38卷 / 12期
关键词：
Energy harvester; Modelling; Piezoelectric cantilever beam; Size effect;
D O I：
10.13465/j.cnki.jvs.2019.12.021
中图分类号：
学科分类号：
摘要：
Young's modulus changes in micro world with size effect. Considering this, a micro piezoelectric cantilever beam was analyzed by ANSYS. A vibration characteristics experimental platform was established. Considering size effect, the dynamic equation of the micro beam was studied. Results show that it is accurate. The dynamic model of micro vibration energy harvester was improved based on that. A T-type micro vibration energy harvester was designed and fabricated. Resonant frequency, tip displacement and output voltage of the harvester were obtained. Comparing with the macroscopic model of vibration harvester, the improved model reduces errors by 13%, 35%, and 22%. © 2019, Editorial Office of Journal of Vibration and Shock. All right reserved.
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页码：148 / 152
页数：4
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