基于Maxwell的永磁阻尼装置数值模拟与实验验证

Numerical simulation and experimental verification based on Maxwell permanent magnet damping device

为提高下运带式输送机运行的可靠性,提出采用永磁阻尼托辊来实现制动的调节。利用Maxwell软件的3D瞬态求解器得到永磁阻尼装置瞬态磁场磁感应强度及电涡流分布图,分析了磁感应强度及电涡流的分布特点和规律;通过仿真计算得出了永磁阻尼装置的阻尼力矩。利用压陷滚动阻力实验台间接测得不同带速下永磁阻尼托辊的阻尼力矩。结果表明,仿真与实验结果符合程度较高,为永磁阻尼托辊的进一步研究提供了依据。

In order to improve the running reliability of the downward belt conveyor,the permanent magnet damping roller was proposed to adjust the braking.The 3D transient solver of Maxwell software was used to obtain the magnetic induction intensity and eddy current distribution of the transient magnetic field of the permanent magnet damping device,and the distribution characteristics and rules of magnetic induction intensity and eddy current were analyzed.The damping torque of the permanent magnet damping device was obtained by simulation.The damping torques of permanent magnet damping rollers at different belt speeds were measured indirectly by using the collapsed-rolling resistance test bench.The results show that the simulation results are in good agreement with the experimental results,which provides a basis for the further study of permanent magnet damping roller.