Vehicle Control Strategy on High Speed Obstacle Avoidance under Emergency

摘要

The most important task for the driver in a vehicle running at high speed is to bypass the obstacle under emergency because of insufficient vehicle-to-vehicle distance. A vehicle dynamics control strategy was developed to prevent vehicles from spinning and drifting out on high speed obstacle avoidance under emergency. With vehicle dynamics control system, counter braking is applied at individual wheels as needed until steering control and vehicle stability are regained, i.e. the vehicle can pass by the obstacle. On the other hand, vehicle dynamics control system may increase the vehicle roll angle, or even deteriorate on-road rollover events. An anti-rollover control system was introduced in this paper to prevent vehicle from rollover. The simulation results showed that with this improved control system, the vehicle can afford nice manoeuvrability and passenger comfortability.