车用电磁悬架系统的结构设计与优化

Structural Design and Optimization of Automotive Electromagnetic Suspension System

针对汽车传统被动悬架道路适应性差、安全性不高、减振效果不理想的缺陷,设计一种新型的车用电磁悬架系统。在被动悬架系统中加入车用电磁悬架系统作动器,与汽车弹簧和液压阻尼器并联,可以增加悬架系统的阻尼力,极大程度降低汽车车身由于路面起伏而引起的振动,提升汽车的安全性以及驾驶平顺性。设计车用电磁悬架系统作动器的3种初始结构,结合Ansys/Maxwell磁场分析软件,研究了不同结构对车用电磁悬架系统作动器产生主动力的影响。结合正交试验法,分析车用电磁悬架系统作动器各部分尺寸参数对主动力的影响,然后对仿真结果进行极差分析,选出该作动器产生主动力最大的一组尺寸参数为:线圈1径向长度8 mm,线圈2轴向长度42 mm,线圈1、3轴向长度20.5 mm,导磁环2轴向长度13 mm,导磁环1、3轴向长度5 mm,使其结构达到相对最优。

In view of the defects of the traditional passive suspension,such as poor road adaptability,low safety and unsatisfactory damping effect,a new electromagnetic suspension system for automobile was designed.By adding the actuator of electromagnetic suspen-sion system to the McPherson passive suspension system,which was in parallel with the automobile spring and hydraulic damper,the damping force of the suspension system could be increased,and the vibration of the automobile body caused by the fluctuation of the road surface could be greatly reduced,so as to improve the safety and ride comfort of the automobile.Three initial structures of the auto-motive electromagnetic suspension system actuator were designed.Combined with Ansys/Maxwell magnetic field analysis software,the influence of different structures on the main power generated by the actuator of automotive electromagnetic suspension system was stud-ied.The influence of each dimension parameter of automotive electromagnetic suspension system actuator on the main power was ana-lyzed by combining the orthogonal test method.Then the range analysis of the simulation results was carried out,a group size parameter of the maximum main force generated by the actuator were selected,including coil 1 radial length 8 mm,coil 2 axial length 42 mm,coil 1 and 3 axial length 20.5 mm,magnetic ring 2 axial length 13 mm,magnetic ring 1 and 3 axial length 5 mm,so as to achieve the relative optimal structure.