Abstract: According to the characteristics of the double wall-arm suspension system, the space model of the suspension system was established, the kinematics characteristics were analyzed, and the correctness of the model was verified by simulation. Simulation model of double wall-arm suspension system was established by using ADAMS/CAR, and the variation law of wheel positioning parameters with wheel up-down runout was analyzed. The wheel positioning parameters were taken as the optimization objective, and the hard point coordinates of the guide mechanism were taken as the design variables for optimization simulation. Simulation results show that the variation range of the optimized wheel positioning parameters is reduced compared with that before the optimization, and the performance of the suspension is improved.

Key words: Suspension guide mechanism; Kinematic characteristic analysis; Wheel positioning parameters; Optimize the simulation

摘要： 论文针对双横臂悬架系统的特点，建立出悬架系统空间模型，进行运动学特性分析。 利用 ADAMS/Car 软件建立起双横臂悬架系统仿真模型，分析车轮定位参数随车轮上下跳动 的变化规律，以车轮定位参数为优化目标，导向机构的硬点坐标为设计变量进行优化仿真。 优化仿真结果表明，优化后的车轮定位参数相较优化之前缩小了变化范围，使该悬架的性能 得到了提高。

关键词: 悬架导向机构；运动学特性分析；车轮定位参数；优化仿真