防滑控制参数对高速车辆车轮磨耗的影响

Effect of anti-skid control parameters on wheel wear of high speed vehicle

结合车辆系统动力学模型,建立考虑制动缸压力非线性特性的高速车辆制动防滑控制模型,研究制动过程中防滑参数对车轮磨耗的影响。研究结果表明:在低黏着条件下紧急制动,减速度法与蠕滑率法共同防滑时,车轮磨耗会随着速度的较小逐渐增大,随着蠕滑率阈值的增大先增大后保持不变,并且磨耗不变时所对应的蠕滑率阈值随着速度的减小而增大。建议在车轮磨耗保持不变后蠕滑率阈值可采用其他方式进行优化设计。

Based on vehicle system dynamics model,a high-speed vehicle brake anti-skid control model with the nonlinear characteristics of brake cylinder pressure was established to study the effect of anti-skid control parameters on wheel wear.The results show that in the case of emergency braking with low adhesion,when the deceleration method and the creep rate method are combined to anti-skid,the wheel wear gradually increases as the speed decreases,and increases first and then remains constant as the creep rate threshold increases.The creep rate threshold corresponding to the remained wear increases as the speed decreases.It is recommended that the creep rate threshold can be optimized in other ways after the wheel wear remains constant.