基于Maxwell电磁阀的开关动态响应研究

针对电磁阀开启和关闭响应时间相互影响的问题,基于Maxwell建立了电磁阀瞬态场三维模型,对影响电磁阀性能的关键因素进行仿真研究。根据力学方程、电路方程和磁路方程搭建了电磁阀运动模型,并分析了电磁阀材料的选择。仿真结果表明,增大弹簧刚度会使电磁阀上升时间和关闭响应时间延长;弹簧预紧力会使开启延迟减少的同时使关闭延迟增大;工作气隙越小的电磁阀开启响应越快且关闭响应减慢;磁感应强度在B-H曲线“膝点”附近会有更好的响应特性。通过仿真分析,为电磁阀设计参数的选择提供了新的思路和解决方案。

Dynamic Switching Response of Solenoid Valve Based on Maxwell

Aiming at the interaction between the solenoid valve opening response time and closing response time, establish a model of the solenoid valve based on Maxwell, research on the key factors affecting the solenoid valve performance. According to the mechanical equation, circuit equation and magnetic circuit equation, establish the motion model of solenoid valve, and analyze the selection of solenoid valve materials. The simulation results show that increasing the spring stiffness will prolong the rise time and closing response time of the solenoid valve. Spring preload can reduce the opening delay and increase the closing delay at the same time. Reducing the working air gap, the solenoid valve will have faster opening response and the slow closing response. The magnetic flux density near the “knee point” of the B-H curve will have better response characteristics. The simulation provides new ideas and solutions for the design parameters of solenoid valve.