位移相关减振器对匹配机械弹性车轮的汽车操纵稳定性的影响

The Influences of Displacement-Related Damper on Vehicle Handling Stability Matching Mechanical Elastic Wheel

为了提高轮胎行驶安全性,避免出现轮胎刺扎、爆胎等情况,同时针对车辆是否具有良好的操纵稳定性等问题,研究了一种阻尼特性随活塞位置变化而改变的位移相关减振器对匹配机械弹性车轮的汽车操纵性的影响。在传统被动式双筒减振器的基础上,建立位移相关减振器的Simulink模型,将该模型导入匹配机械弹性车轮相关参数的Carsim整车模型,在正弦与双移线两种工况下进行Simulink与Carsim的整车联合仿真试验。联合仿真试验结果与传统被动式双筒减振器的结果进行对比分析表明:在空载高速状态下,装有位移相关减振器车辆的横摆角速度与侧向加速度峰值均较小,具有更好的操纵稳定性,并且在车辆行驶平顺性上也有所改善。

In order to improve the safety of tire driving,avoid tire puncturing,puncture,etc.,and at the same time,focusing on whether the vehicle has good steering stability,the effect of a displacement-dependent damper whose damping characteristic changes with the position of the piston is studied.Based on the traditional passive double-tube damper,the Simulink model of the displacement-related damper was established.The model was introduced into the Carsim vehicle model matching the relevant parameters of the mechanical elastic wheel,and the Simulink and Carsim’s vehicle joint simulation test was carried out under both sine and double-shift conditions.The results of the co-simulation test and the results of the traditional passive double-tube damper show that the yaw rate and the lateral acceleration peak of the vehicle with displacement-related damper were smaller at no-load high-speed conditions.Thus the displacement-related damper has the better handling stability than the traditional passive double-tube damper and the ride comfort was also improved.