Full Text:   <5796>

Summary:  <2292>

CLC number: TM619; TN384

On-line Access: 2024-08-27

Received: 2023-10-17

Revision Accepted: 2024-05-08

Crosschecked: 2012-05-29

Cited: 17

Clicked: 7366

Citations:  Bibtex RefMan EndNote GB/T7714

-   Go to

Article info.
Open peer comments

Journal of Zhejiang University SCIENCE A 2012 Vol.13 No.7 P.526-537

http://doi.org/10.1631/jzus.A1100344


An energy harvester combining a piezoelectric cantilever and a single degree of freedom elastic system


Author(s):  Hong-yan Wang, Xiao-biao Shan, Tao Xie

Affiliation(s):  State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150001, China; more

Corresponding email(s):   wanghongyan1993@163.com

Key Words:  Piezoelectric cantilever, Single degree of freedom elastic (SDOF) system, Energy harvesting, Finite element analysis (FEA)



Abstract: 
This paper presents a type of vibration energy harvester combining a piezoelectric cantilever and a single degree of freedom (SDOF) elastic system. The main function of the additional SDOF elastic system is to magnify vibration displacement of the piezoelectric cantilever to improve the power output. A mathematical model of the energy harvester is developed based on Hamilton’s principle and Rayleigh-Ritz method. Furthermore, the effects of the structural parameters of the SDOF elastic system on the electromechanical outputs of the energy harvester are analyzed numerically. The accuracy of the output performance in the numerical solution is identified from the finite element method (FEM). A good agreement is found between the numerical results and FEM results. The results show that the power output can be increased and the frequency bandwidth can be improved when the SDOF elastic system has a larger lumped mass and a smaller damping ratio. The numerical results also indicate that a matching load resistance under the short circuit resonance condition can obtain a higher current output, and so is more suitable for application to the piezoelectric energy harvester.

Open peer comments: Debate/Discuss/Question/Opinion

<1>

Please provide your name, email address and a comment





Journal of Zhejiang University-SCIENCE, 38 Zheda Road, Hangzhou 310027, China
Tel: +86-571-87952783; E-mail: cjzhang@zju.edu.cn
Copyright © 2000 - 2025 Journal of Zhejiang University-SCIENCE