计算力学学报2017，Vol.34Issue(5)：623-630,8.DOI:10.7511/jslx201705014
双稳态电磁式振动能量捕获器超谐波响应研究
Research on the superharmonic effects of bistable electromagnetic vibration energy harvester
摘要
Abstract
Superharmonic effects are characteristic of many nonlinear vibration systems undergoing high levels of excitation .As far as bistable vibration energy harvester are concerned ,superharmonic effects can make the vibration energy harvester yield superior electrical power .The bistable electromagnetic vibration energy harvester with auxiliary nonlinear oscillator is put forward by combining the mass-nonlinear spring-damper system and the bistable vibration energy harvester system .The mechanical model and governing equations of the bistable electromagnetic vibration energy harvester are obtained . The analytical solutions of the fundamental and superharmonic effects of the harvester are obtained by means of the harmonic balance method with two-term solution formulation .The effects law of mass ratio and tuning ratio on the large amplitude motion of bistable vibration energy harvester are obtained by simulation .The optimum ranges of structural parameters are determined .Furthermore ,superharmonic power generation is prominent when the harvester is excited by the external excitation signal with lower frequency while fundamental power generation become prominent when the excitation frequency increases .The above research results can provide a basis for the study of the bistable electromagnetic vibration energy harvester .关键词
双稳态振动能量捕获器/谐波平衡法/超谐波响应/非线性振子/参数配置Key words
bistable vibration energy harvester/harmonic balance method/superharmonic effect/nonlinear oscillator/parameter configuration分类
数理科学引用本文复制引用
吴子英,叶文腾,刘强..双稳态电磁式振动能量捕获器超谐波响应研究[J].计算力学学报,2017,34(5):623-630,8.基金项目
国家自然科学基金(11572243 )资助项目 . （11572243 ）
