低速大角度转向时回正力矩计算与优化

 罗涌泉1,高瑞2*,高群3

(1.万向集团公司洁能智动车分公司,浙江 杭州 311215;2.汉江师范学院,湖北 十堰 442000;3.中山大学,广东 广州 510275)
摘要:为解决某电动车低速大角度转向时车轮回正力矩减小的问题,分析了该工况下转向车轮的受力状况,推导了因转向梯形误差产生的回正力矩计算公式。结合由重力产生的回正力矩与各类摩擦力产生的摩擦力矩的计算公式,获得了汽车低速大角度转向时的回正力矩计算模型,并用该模型对车辆高低车速下的回正力矩进行对比计算分析,确认了问题的存在。最后通过Adams/Insight模块对转向梯形进行优化并再次计算对比分析,解决了此问题。
关键词:低速大角度转向;回正力矩计算;转向梯形优化
中图分类号:U463.42 文献标志码:A doi:10.3969/j.issn.1006-0316.2017.08.002
文章编号:1006-0316 (2017) 08-0007-05
Aligning Moment Calculation and Optimization with Big Steering Angles at Low Speeds
LUO Yongquan1,GAO Rui2,GAO Qun3
( 1.Wanxiang Group Clean Intelligent Vehicle Company, Hangzhou 311215, China; 2.Hanjiang Normal University, Shiyan 442000, China;
3.Sun Yat-sen University, Guangzhou 510275, China )
Abstract:In order to solve the reduction of an electric vehicle aligning moment with a big -angle steering at a low speed, in this paper the force condition of cornering wheels is analyzed, and it is proposed that an aligning moment calculation formula is caused by steering geometry deviation. Combined with the gravity moment and the friction moment, the aligning moment calculation model of cornering wheels is developed, meanwhile contrast calculations and analysis on aligning moments of the vehicle at high and low speeds are carried out. In the end, the electric vehicle steering geometry is optimized by Adams/Insight and the aligning moments at low speed are calculated again, the result show the moment reduction is worked out. 
Key words:big-angle steering at low speed;aligning moment calculation;steering geometry optimization
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收稿日期:2017-02-06
作者简介:罗涌泉(1977-),男,湖北潜江人,硕士,工程师,主要从事新能源汽车底盘开发工作。*通讯作者:高瑞(1976-),男,湖北大悟县人,硕士,讲师,主要研究方向为机电控制技术。
 

 

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