考虑侧偏特性时的修正阿克曼原理转角研究  

Research on Modified Ackerman Principle Corner Considering Tire Side Properties

作　　者：李辰[1] 付有兵 张军伟[1] 万芳[1] 左霞[1] Li Chen;Fu You-bing;Zhang Jun-wei;Wan Fang;Zuo Xia(Beijing Institute of Space Launch Technology, Beijing, 100076)

机构地区：[1]北京航天发射技术研究所,北京100076

出　　处：《导弹与航天运载技术》2018年第6期96-99,共4页Missiles and Space Vehicles

摘　　要：针对四轴双前桥转向系统车辆,建立了二自由度转向模型,研究了车轮转向角度与轮胎侧偏角之间的关系。在大转角低车速工况下,阿克曼原理能够满足设计要求,而在小转角高车速下,阿克曼原理具有一定的局限性,应对其进行修正。为避免轮胎异常磨损,应使得各车轮侧偏角尽量小且相等,在此目标基础上进行仿真。仿真结果表明,选择相对较低的修正系数能够减少轮胎的异常磨损,通过实车试验验证了修正阿克曼原理转角的正确性。A2-DOF steering model is established for the four-axle with double front axle steering system,and the relationship between the wheel steering angle and the tire slip angle is studied.In the big wheel steering angle with low speed conditions,ackerman principle could meet the design requirements,but in small wheel steering angle with high speed conditions,the Ackerman principle has some limitations and should be amended.In order to avoid the occurrence of abnormal tire wear,it should make the wheel side angle as small and equal as possible,simulation has been performed on that basis.The simulation results show that choosing a relatively low correction coefficient can reduce the abnormal wear of the tire.The real vehicle experiment validated the correctness of the amended Ackerman law.

关 键 词：阿克曼原理 修正系数 侧偏特性 

分 类 号：U461[机械工程—车辆工程]