基于电动汽车轮胎异常磨损的悬架硬点优化分析  

Optimization Analysis of Suspension Hard Points Based on Abnormal Tire Wear of Electric Vehicles

作　　者：蔡云 马科 赵蕾 陈剑波 陈森 CAI Yun;MA Ke;ZHAO Lei;CHEN Jianbo;CHEN Sen(School of Automobile and Transportation,Xihua University,Chengdu 610039,China;Vehicle Measurement Control and Safety Key Laboratory of Sichuan Province,Chengdu 610039,China;Chengdu Luxingtong Information Technology Company Limited,Chengdu 610041,China)

机构地区：[1]西华大学汽车与交通学院,四川成都610039 [2]汽车测控与安全四川省重点实验室,四川成都610039 [3]成都路行通信息技术有限公司,四川成都610041

出　　处：《汽车实用技术》2023年第5期1-7,共7页Automobile Applied Technology

基　　金：基于北斗双模高精度定位的智能车联大数据安全综合服务平台开发及推广示范(2020ZHCG0077)。

摘　　要：对电动汽车车身质量增大带来的轮胎异常磨损进行了悬架硬点分析及优化设计。运用Adams/Car建立双叉臂前悬架刚柔耦合虚拟样机模型,验证了车身质量增大会对外倾角与前束角的匹配关系产生影响,也会增大轮胎侧滑。在优化设计中提出选取更多硬点但仅优化其Z坐标的方案,二次优化与初次优化的结果对比表明,方案可行且可大幅降低优化计算量和缩减研发周期,同时优化后的电动车型双叉臂悬架的车轮外倾角与前束角的匹配关系得到了优化、轮胎侧滑量大大减小,有效减轻了轮胎的异常磨损。The suspension hard point analysis and optimization design were carried out for the abnormal tire wear caused by the increasing body mass of electric vehicles. Adams/Car was used to establish the rigid-flexible coupling virtual prototype model of the double-arm front suspension, and it was verified that the increase of body mass would affect the matching relationship between the external inclination angle and the front bundle angle, and also increase the tire sideslip. In the optimal design is put forward to choose more hard points but only optimize the Z coordinate, quadratic optimization and optimization for the first time the results indicated that scheme is feasible, can sharply reduce the optimization computation and reduce development cycle, at the same time, the optimized electric model of double arm suspension fork wheel camber and toe angle got the matching relation between optimization, tire sideslip quantity greatly reduced, effectively reduce the abnormal tire wear.

关 键 词：电动汽车 轮胎异常磨损 硬点优化 灵敏度分析 

分 类 号：U463.341[机械工程—车辆工程]