机械科学与技术2018，Vol.37Issue(2)：187-192,6.DOI:10.13433/j.cnki.1003-8728.2018.0204
非线性双稳态压电俘能系统阱间阱内运动谐波分析
Harmonic Analysis of a Bistable Piezoelectric Energy Harvester on Intrawell and Interwell Oscillations
摘要
Abstract
Firstly,the equilibrium bifurcation analysis of the piezoelectric system proves its nonlinear bistable characteristics,and also obtains the equations of motion.Then,the harmonic balance method is applied to derive relationship of the excitation amplitude,excitation frequency,response amplitude and output power.It could predict dynamic responses of the intrawell and interwell oscillations of the bistable piezoelectric energy harvester.The effects of the parameters,such as damping,impedance,excitation amplitude and excitation frequency on the response amplitude and output power,are analyzed.The results show that the damping and impedance have a great influence on the width and the amplitude of the energy harvester.There exist the high and low energy states for intrawell and interwell oscillations.The maximum power could be got by adjusting impedance under the excitation with different amplitudes and frequencies.关键词
压电/俘能/简谐激励/谐波平衡法Key words
piezoelectric energy harvester/harmonic balance method/nonlinear/dynamic response/intrawell and interwell oscillations分类
数理科学引用本文复制引用
朱培,任兴民,秦卫阳,周志勇..非线性双稳态压电俘能系统阱间阱内运动谐波分析[J].机械科学与技术,2018,37(2):187-192,6.基金项目
国家自然科学基金项目(11672237,11272257)、航空科学基金项目(2013ZB08001)、航天科技创新基金项目(2016kc060013)及中央高校基本科研业务费项目(3102016ZY016)资助 （11672237,11272257）
