基于磁电换能器的三维宽频振动能量采集器
发布时间：2019-07-05 20:58
【摘要】：设计了一种采用磁电换能器的三维宽频振动能量采集器,突破传统振动能量采集器响应频带范围窄,以及仅能响应某一方向振动能量的限制。采集器由伞状弹性结构、环形磁路和磁电换能器组成。伞状弹性结构可以响应任意方向振动能量,同时借助磁路与磁电换能器间的磁力非线性作用展宽器件频率响应范围,最终实现多方向宽频振动能量采集。理论推导了磁力作用下振动结构的动力学方程,以及电压输出模型;借助结构仿真软件COMSOL multiphysics和磁场仿真软件Ansoft Maxwell分析了结构振动和磁路磁场分布特性。实验结果表明:在加速度为5.88 m/s2的振动激励下,采集器可以实现三维振动能量采集,在x-y平面内最大响应带宽达到4.1 Hz,最大输出功率达到41.2μW;z方向最大带宽为2.5 Hz,最大输出功率达到43μW。
[Abstract]:A three-dimensional broadband vibration energy collector using magnetoelectric transducer is designed, which breaks through the narrow response band range of the traditional vibration energy collector and can only respond to the limit of vibration energy in a certain direction. The collector is composed of umbrella elastic structure, annular magnetic circuit and magnetoelectric transducer. The umbrella elastic structure can respond to vibration energy in any direction. At the same time, the frequency response range of the device can be broadened by the nonlinear action of magnetic circuit and magnetoelectric transducer, and finally the multi-direction broadband vibration energy acquisition can be realized. The dynamic equation and voltage output model of vibrating structure under magnetic force are derived theoretically, and the characteristics of structural vibration and magnetic field distribution are analyzed by means of structural simulation software COMSOL multiphysics and magnetic field simulation software Ansoft Maxwell. The experimental results show that the three-dimensional vibration energy acquisition can be realized by the vibration excitation with acceleration of 5.88 m/s2. The maximum response bandwidth in the x 鈮，
本文编号：2510808
[Abstract]:A three-dimensional broadband vibration energy collector using magnetoelectric transducer is designed, which breaks through the narrow response band range of the traditional vibration energy collector and can only respond to the limit of vibration energy in a certain direction. The collector is composed of umbrella elastic structure, annular magnetic circuit and magnetoelectric transducer. The umbrella elastic structure can respond to vibration energy in any direction. At the same time, the frequency response range of the device can be broadened by the nonlinear action of magnetic circuit and magnetoelectric transducer, and finally the multi-direction broadband vibration energy acquisition can be realized. The dynamic equation and voltage output model of vibrating structure under magnetic force are derived theoretically, and the characteristics of structural vibration and magnetic field distribution are analyzed by means of structural simulation software COMSOL multiphysics and magnetic field simulation software Ansoft Maxwell. The experimental results show that the three-dimensional vibration energy acquisition can be realized by the vibration excitation with acceleration of 5.88 m/s2. The maximum response bandwidth in the x 鈮，
本文编号：2510808
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