基于薄壁磁通管的ABS电磁阀行程力特性仿真与实验研究

Simulation and Test on Force-stroke Characteristics of ABS Solenoid Valve with Thin-walled Flux Tube

梯形沟槽的薄壁磁通管能够改进ABS电磁阀的加工工艺,但同时造成了电磁力特性对薄壁位置参数的高依赖性。基于有限元模型仿真探讨了梯形沟槽的上下倾角、薄壁长度、薄壁厚度、薄壁初始高度等结构参数对电磁力的作用规律,并进行了实验对比研究。仿真数据与实验数据基本吻合,验证了分析模型的正确性。研究结果表明,较小的梯形沟槽角度以及适当的薄壁长度、薄壁厚度和薄壁初始位置可获得良好的行程力特性。

The thin-walled flux tube with trapezoid groove can improve the processing technology of the ABS sole- noid valve, but it also makes the magnetic force characteristics highly depend on the thin wall parameters. Based on the finite element model, a thorough analysis on the structural parameters of thin-walled flux tube with trapezoid groove is given, and the main parameters are top angle and bottom angle of the trapezoid groove, length, thickness and initial height of the thin wall. The magnetic force of the solenoid valve with optimized structure is finally tested. The simulated results are well identical with the experimental ones, which validates the analysis model. The results show that smaller angle of the trapezoid groove, proper length, thickness and initial height of the thin wall can a- chieve fine force-stroke characteristics.