针对目前磁流变减振器自供电能量采集装置体积庞大、结构复杂、能量采集效率低等问题,提出了一种盘式永磁电机振动能量采集系统,该系统由滚珠丝杠副结构驱动,集成在双伸出杆磁流变减振器内部.利用有限元软件Ansys/Ansoft Maxwell 3D对盘式永磁发电机进行了静态磁场仿真,得出的气隙磁场与样机实测值吻合;并用瞬态电磁场模块对振幅为5mm不同频率的正弦激励下的空载反电动势和减振器电阻作为负载的场路耦合进行了仿真,仿真结果表明该能量采集系统的可行性和有效性.
Due to the problems such as bulky, complex structure, low efficiency of energy harvesting in the self-powered magaetorheologica! (MR) damper energy harvesting device in literatures, it proposes a new disk pe~nt motor energy harvesting system driven by the ball screw. It is integrated in the two ended MR damper. Utilizing the finite element software Ansys/Ansoft Maxwell 3D, the static magnetic simulation about the disk permanent motor is pe~ormed. The calculation shows that the value of the simulated air-gap magnetic field agrees with that of the measured of the prototype. In addition, the transient electromagnetic module is applied to calculate the situation under the unload back-EMF at 5mm amplitude for different frequencies and the resistance of the MR damper. The simulation results show the feasibility and effectiveness of the proposed energy harvesting system.