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。
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.
作者
罗涌泉
高瑞
高群
LUO Yongquan;GAO Rui;GAO Qun(Wanxiang Group Clean Intelligent Vehicle Company, Hangzhou 311215, China;Hanjiang Normal University, Shiyan 442000, China;Sun Yat-sen University, Guangzhou 510275, China)
出处
《机械》
2017年第8期7-11,共5页
Machinery
关键词
低速大角度转向
回正力矩计算
转向梯形优化
big-angle steering at low speed
aligning moment calculation
steering geometry optimization
