永磁操动机构磁场计算及动特性分析

Magnetic field calculation and dynamic behavior analyses of permanent magnetic actuator

在建立永磁操动机构动态分析数学模型的基础上，采用有限元分析方法对永磁操动机构激磁后的动态特性进行计算，得出了动铁芯运动过程中的机构磁场分布，线圈电流、动铁芯的位移、运动速度及在运动中受力随时间变化的规律，并比较了在两种不同激磁方式下的机构运动特性及电压大小对永磁操动机构运动特性的影响。

It presents the magnetic field and dynamic behavior analyses for the permanent magnetic actuator. Finite element method associated to parametrization is adopted to calculate the displacement of the moving parts and the supplying current when the actuator is DC voltage supplied or capacitor supplied. In this analysis, the magnetic, electric and mechanical phenomena are coupled and some curves reflecting the dynamic behavior obtained. In addition, the comparison of dynamic behavior between DC voltage supplied and capacitor discharge supplied is drawn.