双稳悬臂梁电磁式振动能量采集研究  

Electromagnetic type vibration energy harvester based on bi-stable cantilever beam

作　　者：刘仲琳 冷永刚[1] 刘进军[1] 范胜波[1] LIU Zhonglin;LENG Yonggang;LIU Jinjun;FAN Shengbo(School of Mechanical Engineering,Tianjin University,Tianjin 300350,China)

机构地区：[1]天津大学机械工程学院

出　　处：《振动与冲击》2019年第23期126-133,151,共9页Journal of Vibration and Shock

基　　金：国家自然科学基金(51675370);天津市应用基础与前沿技术研究计划(15JCZDJC32200)

摘　　要：以双磁铁结构建立的双稳悬臂梁电磁式振动能量采集系统为研究对象,采用形状修正函数法和磁化电流理论分析了双稳悬臂梁振动响应特性,并根据电磁感应原理探索了运动坐标系下电磁感应电动势的精确仿真方法。数值模拟和实验验证表明,所建立的非线性磁力和磁场的分析以及悬臂梁振动响应和感应电动势的计算是合理正确的,可用于双稳悬臂梁电磁式振动能量采集系统的感应电动势和输出功率进行有效评估。The bi-stable cantilever beam-based electromagnetic type vibration energy harvester built with dual-magnet structure was taken as the study object,the shape correction function method and the magnetizing current theory were adopted to analyze the bi-stable cantilever beam’s vibration response features.According to the electromagnetic induction principle,the accurate simulation method for electromagnetic induction electromotive force under moving coordinate system was explored.The results of numerical simulation and test verification showed that the established nonlinear magnetic force,magnetic field analysis and simulation computation for cantilever beam’s vibration response and induced electromotive force are reasonable and correct;the proposed method can be used to effectively evaluate the bi-stable cantilever beam-based electromagnetic type vibration energy harvester’s induced electromotive force and output power.

关 键 词：双稳悬臂梁 能量采集 电磁感应 非线性 

分 类 号：TN384[电子电信—物理电子学]