Research on Lateral Acceleration of Lane Changing

Abstract

In sure of driving safe and stability during vehicle changing lanes, lateral acceleration was researched in this paper, and the relationship between lateral acceleration and speed as well as lateral acceleration and road condition were analyzed during the lane changing process. First, the vehicle lane changing test and the general value of lateral acceleration are introduced. Then, from the kinematic point of view, according to the derivation of lane changing trajectory and the constraint of friction ellipse, the situation of lateral acceleration with velocity is given. Finally, vehicle virtual prototype model by ADAMS/CAR was established for dynamic simulation, then the maximum lateral acceleration under different speed was compared between general value and simulation value. The results show that lateral acceleration values were closely related to speed and road conditions, the general value of lateral acceleration can be improved and expressed as 0.533 μg. This research can provide theoretical basis for active safe controlling of vehicles and lane changing of intelligent vehicles, which will reduce traffic accidents.