automobiles;  fuzzy control;  active steering;  Side collision avoidance

When the car overtakes during high-speed driving, it is prone to side collision under the parallel working conditions of the two vehicles. It is proposed to use active steering technology to control parallel vehicles according to the change of lateral distance between the two vehicles when overtaking, so that the lateral distance of the two vehicles meets the safety requirements, avoids traffic accidents caused by the change of lateral spacing between the two vehicles, and reduces the possibility of lateral collision when the car overtakes. The corresponding control objectives and control strategies are established, the fuzzy control model based on vehicle spacing and its change rate is established, the fuzzy controller is designed and the simulation test under complex working conditions is carried out. The results show that the active steering fuzzy control technology can reduce the risk of side collision between the two vehicles when overtaking at high speed, so that the car has better safety during high-speed driving.