车辆的爆胎监视与控制系统

Vehicle tire blowout monitoring and control system

为解决车辆高速爆胎给车辆带来的安全性问题,采用仿真与场地试验相结合的方法,研究了爆胎车辆的运动特征,设计了爆胎监视与控制系统.该系统能够在爆胎发生后及时捕获爆胎信息,在车辆陷入失稳状态之前采取制动稳定措施,维持车辆的稳定性.系统使用胎压值与胎压下降梯度进行双路判断,以缩减爆胎监测潜在的滞后时间.爆胎后的制动减速度通过模糊控制算法,考虑横摆角速度与车速的综合状态给出.试验表明:系统能够有效保持车辆高速爆胎后的行驶稳定性,防止车辆失控.

In solving the vehicle stability problems induced by high speed traveling vehicle with blowout tire, simulation and field testing methods are adopted, through which the dynamics after tire blowout is analyzed. A novel tire blowout monitoring and control system was developed concerning these dynamical features, which could capture the blowout event after blowout happening fast enough to prevent the vehicle from being out of control. This system keeps vehicle stability via boosting the brake system with target deceleration before the vehicle loses control. Tire blowout event is detected through absolute tire pressure and pressure gradient concurrently, and the target deceleration value is calculated by a fuzzy controller with vehicle＇s yaw rate and speed. Field testing verifies that the system could effectively keep stability of vehicle with blowout tire.