Abstract: The accelerated electrification of automobiles raises requirements for overall vehicle performance, placing higher demands on the kinematic characteristics and dynamic response of suspension systems. This paper studies the kinematic properties of the newly optimized MacPherson suspension. Based on multi-body dynamics theory, a virtual prototype model of the suspension is established via the ADAMS/Car platform. Simulation results demonstrate that under wheel travel conditions, the variation trends of toe angle, camber angle, kingpin inclination angle, kingpin caster angle and roll center height of the new suspension are similar to those of the traditional MacPherson suspension, which maintains favorable driving stability. Under steering conditions, the new suspension delivers prominent advantages with larger wheel steering angle, smaller turning diameter and lower steering gear ratio, effectively improving vehicle maneuverability and steering sensitivity. The research findings provide theoretical reference and simulation support for the optimal design of suspension systems for electric vehicles.

Key words: novel MacPherson suspension; ADAMS; kinematic analysis; big steer angle

摘要： 汽车电动化转型步伐加快，整车性能标准不断提高，对悬架运动学特性、动态响应性 能提出更高要求。文章针对优化升级后的新型麦弗逊悬架开展运动学特性研究，依托多体动 力学理论，采用 ADAMS/Car 平台搭建该悬架虚拟样机模型。仿真结果表明，车轮跳动工况 下，新型悬架前束角、外倾角、主销内外倾角、侧倾中心高度等参数变化趋势与传统麦弗逊 悬架相近，车辆行驶稳定性良好；转向工况下，新型悬架优势突出，车轮转角更大、转弯直 径更小、转向传动比更低，整车机动性与转向灵敏度得到明显改善，相关结论可为电动车辆 悬架优化设计提供理论参考与仿真支撑。

关键词: 新型麦弗逊悬架；ADAMS；运动学分析；大转角