Volume 30 Issue 1
Jan.  2021
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Article Contents
ZHU Yucheng, HU Jiayang, BAI Yunshan, ZHAO Jiang, JI Xincun, WANG Debo. A Novel Quarter-Circular Arc Multi-Direction Piezoelectric VEH and Its Theoretical Model[J]. Chinese Journal of Electronics, 2021, 30(1): 185-191. doi: 10.1049/cje.2020.12.003
 Citation: ZHU Yucheng, HU Jiayang, BAI Yunshan, ZHAO Jiang, JI Xincun, WANG Debo. A Novel Quarter-Circular Arc Multi-Direction Piezoelectric VEH and Its Theoretical Model[J]. Chinese Journal of Electronics, 2021, 30(1): 185-191.

# A Novel Quarter-Circular Arc Multi-Direction Piezoelectric VEH and Its Theoretical Model

##### doi: 10.1049/cje.2020.12.003
Funds:

the National Natural Science Foundation of China 61704086

the National Natural Science Foundation of China 61704088

the National Natural Science Foundation of China 51604157

the China Postdoctoral Science Foundation 2017M621692

the Jiangsu Postdoctoral Foundation 1701131B

the Scientific Research Foundation of Nanjing University of Posts and Telecommunications NY215139

the Scientific Research Foundation of Nanjing University of Posts and Telecommunications NY217039

• Author Bio:

ZHU Yucheng  was born in China in 1995. He is a B.S. candidate in Nanjing University of Posts and Telecommunications. The discipline of his research focuses on the MEMS-based piezo-electric vibration energy harvesters and the ultrasound MEMS devices. (Email: 353274300@qq.com)

• Corresponding author: WANG Debo  (corresponding author) was born in China in 1983. He received the M.S. degree and the Ph.D. degree in Key Laboratory of MEMS of the Ministry of Education from the Southeast University, Nanjing, China, in 2010 and 2012. He is now an associate professor of the Nanjing University of Posts and Telecommunication. The discipline of his research focuses on the MEMS-based piezo-electric VEH. (Email: wdb@njupt.edu.cn)
• Accepted Date: 2019-08-01
• Publish Date: 2021-01-01
• A quarter-circular arc piezoelectric Vibration energy harvester (VEH) based on nonlinear geometry is proposed with both bending moment and torque deformation mode, so it can effectively absorb multi-directional vibration at the same resonance frequency. The theoretical model of quarter-circular arc piezoelectric VEH is established to study the resonance frequency and the output voltage. In order to demonstrate multi-directional performance of the quarter-circular arc VEH, the stress distribution is compared with that of the traditional piezoelectric VEH in multi-direction vibration, and the output voltage of the circular arc piezoelectric VEH are relatively increased 267.26% in X-direction, 463.18% in Y-direction, and 17.24% in Z-direction. The external load is equipped in circuit to measure output power, whose matching resistance is around 21k$\bm{\Omega}$, and the maximum output powers are 7.57mW in X-direction, 2.39mW in Y-direction, and 9.93mW in Z-direction.
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