转向梯形双间隙对汽车蛇行工况稳定性的影响  

Study of the Effects of Steering Trapezoid Dual-clearance on Vehicle Stability under Slalom Maneuver

作　　者：魏道高[1] 张志龙[1] 蒋统 潘之杰[2] 肖怀阳[2] 

机构地区：[1]合肥工业大学 [2]浙江吉利汽车研究院有限公司

出　　处：《汽车技术》2015年第10期19-23,56,共6页Automobile Technology

摘　　要：将转向梯形简化为平面连杆机构,建立包含车身侧倾、横摆、侧偏及右前轮转角的4自由度车辆转向行驶系统数学模型,并采用数值方法对转向梯形运动副双间隙参数变化时样车质心侧偏角的稳定性进行计算分析。结果表明,随着运动副间隙增大,汽车蛇形运动的单周期区域减小,倍周期区域消失,混沌区域增加;理论上找到间隙r<1.0 mm区间时汽车蛇形工况失稳区间较小。The steering trapezoid mechanism is simplified into a plane linkage mechanism, a four-DOF mathematical model of vehicle maneuvering system including body roll, yaw and sideslip and off front right wheel angle is established. On the basis of this model, a numerical analysis method is used to conduct a simulated analysis about the stability of prototype vehicle side slip angle as the double-clearance parameter of steering trapezoid motion pair changes. The results show that with the increase of the motion pair clearance, single cycle area of vehicle slalom motion decreases, whereas the period- doubling area disappears and the chaos area increases. The instability interval under slalom maneuver is small in theory when the clearances r〈1.0 mm.

关 键 词：双间隙 转向机构 蛇形工况 质心侧偏角 稳定性 

分 类 号：U469.21[机械工程—车辆工程]