An Arc-Shaped Piezoelectric Bistable Vibration Energy Harvester: Modeling and Experiments

Sensors

Xiang Wan¹  Meng Zuo¹  Houzhi Tan¹  Xuhui Zhang¹  Hongwei Fan¹  Wenjuan Yang¹  Qinghua Mao¹ 

[1] College of Mechanical Engineering, Xi’an University of Science and Technology, Xi’an 710054, China;

关键词: vibration energy harvesting;    bistable;    arc-shaped;    nonlinear;    piezoelectric;   

DOI  :  10.3390/s18124472

来源: DOAJ

【 摘 要 】

In order to improve vibration energy harvesting, this paper designs an arc-shaped piezoelectric bistable vibration energy harvester (ABEH). The bistable configuration is achieved by using magnetic coupling, and the nonlinear magnetic force is calculated. Based on Lagrangian equation, piezoelectric theory, Kirchhoff’s law, etc., a complete theoretical model of the presented ABEH is built. The influence of the nonlinear stiffness terms, the electromechanical coupling coefficient, the damping, the distance between magnets, and the load resistance on the dynamic response and the energy harvesting performance of the ABEH is numerically explored. More importantly, experiments are designed to verify the energy harvesting enhancement of the ABEH. Compared with the non-magnet energy harvester, the ABEH has much better energy harvesting performance.

【 授权许可】

Unknown