摘要
为研究路面条件对行车安全的影响,作者利用多体动力学仿真软件ADAMS/Car与ADAMS/Solve建立了车辆模型、道路模型、驾驶员模型以及人-车-路的耦合模型,并通过改变路面摩擦系数,分别模拟了晴天、雨天、雪天和在结冰状况下的路面条件,并进行了闭环仿真试验,得到了车辆的侧向位移、航向角以及轮胎的侧向反力的响应输出,分析了不同路面条件对行车安全的影响。计算结果表明:随着路面条件的恶化,驾驶员操纵方向盘的转动角速度突变增加;当结冰路面摩擦系数为0.18时,左右后轮侧向力均趋于0,会导致车辆绕前轮旋转,甚至失去控制。
In order to study the influence of road surface condition on driving safety, the vehicle model, road model, driver model and driver-vehicle-road coupling model were set up by using multi-body dynamics softwares ADAMS/Car and ADAMS/Solve. By changing the road surface friction coefficients, the road surface conditions in sunny, rain, snow and freezing weather were simulated. Then, aclosed-loop simulation test was carried out, and the response outputs of the lateral displacement, course angle and lateral force of the tires were obtained. Computation result indicates that the speed of steering wheel rotating angles will increase mutationally with the road condition worsening; when road friction coefficient is 0.18 in freezing weather, the lateral force of the left and right wheels will decrease to 0, and this case will lead to vehicle rotating around the front wheel, even go haywire.
出处
《交通运输工程与信息学报》
2013年第3期77-81,86,共6页
Journal of Transportation Engineering and Information
基金
河南省交通科学技术研究院有限公司青年基金项目(2012Q08)
