一种磁耦合的M形非线性压电振动能量收集装置  

A Magnetically Coupled M-shaped Nonlinear Piezoelectric Vibration Energy Harvester

作　　者：陈坤铭 丁晓亮 沈辉[1] CHEN Kun-ming;DING Xiao-liang;SHEN Hui(College of Mechanical and Electrical Engineering, Qingdao University, Qingdao 266071, China)

机构地区：[1]青岛大学机电工程学院,青岛266071

出　　处：《青岛大学学报（自然科学版）》2022年第3期39-44,50,共7页Journal of Qingdao University(Natural Science Edition)

基　　金：国家自然科学基金面上项目(批准号:51975303)资助。

摘　　要：针对压电振动能量收集装置在低频范围内工作频带较窄的问题,设计了一种磁耦合的M形非线性压电振动能量收集装置(MEH),建立了MEH的等效机电耦合模型。仿真分析了MEH的输出响应,实验验证了仿真的正确性。研究结果表明,外部非线性磁斥力的耦合作用能够拓宽能量收集装置的工作频带,在0.5 g加速度激励下,工作频带相较于原有无磁耦合装置提升28%。To enhance the broadband performance of piezoelectric vibration energy harvester in the low-frequency range,a magnetically coupled M-shaped nonlinear piezoelectric vibration energy harvester(MEH)was designed.The equivalent electromechanical model of MEH was established.Numerical simulation was performed and showed a good agreement with experimental results.The results show that the magnetic coupling effect can broaden operating bandwidth.The operating bandwidth was increased by 28%compared with the original device without magnetic coupling under 0.5 g excitation.

关 键 词：压电振动能量收集 M形梁 磁耦合 宽频 

分 类 号：TN384[电子电信—物理电子学]