超磁致伸缩式振动能量回收装置建模与分析

Modeling and analysis of giant magnetostrictive vibration energy harvesting device

根据超磁致伸缩材料的材料特性,设计了一种柱棒式振动能量回收装置,并对其工作原理进行了介绍。结合装置的结构特点,分别建立了能量回收过程的物理模型和传递函数模型。根据所得到的传递函数模型,重点对能量回收的电压输出进行了仿真分析,分别得到了超磁致伸缩棒的质量、刚度、阻尼以及装置采集线圈的匝数对输出电压的影响,为装置下一步的优化设计提供了参考依据。

According to the material characteristics,a kind of rod vibration energy harvesting device is designed and its working principle is introduced.The physical and transfer function model of the energy recovery process are established combining with the structural characteristics of the device.According to the obtained transfer function model,the voltage output of energy recovery is simulated and analyzed.The influence of mass,stiffness,damping of the giant magnetostrictive rod and the turn number of the collecting coil of the device on the output voltage is obtained,respectively,which provides a reference for the further optimal design of the device.