Research on the Actively Controlling Rear Wheel Steer Technology of 4WS Vehicle

摘要

The proportional control strategy and characteristics for four wheel steering (4WS) system have been analyzed in detail. And some new improved control algorithms have been introduced. Through further research about relationship of rear wheel steering function and yaw velocity, a new control target is put forward to ensure vehicle security. Therefore, the establishment of a set of identification system of location of mass’s center may be a good solution to distinguish stable turning characteristic of vehicle for multi -control strategy of rear wheel steering.