Research on Acceleration Slip Regulation for Battery Electric Vehicle

As an important part of the automobile electronic control system, the acceleration slip regulation takes the tire slip rate as the main control target. By controlling the wheel driving force, the tire maintains a stable adhesion state to obtain good driving stability and power. This paper takes battery electric vehicles as the research object and explores the application of acceleration slip regulation in vehicle drive control. In order to obtain the true vehicle speed when the wheel slips, a vehicle speed observer based on extended Kalman Filter is proposed. Secondly, this paper designs a road surface recognition method based on fuzzy theory, which obtains the optimal slip rate under current road conditions by taking the actual slip rate and road surface adhesion coefficient as input. When a vehicle is driving on a road with different adhesion coefficients on the left and right sides, one side of the wheel may slip severely while the opposite side wheel does not slip. In order to ensure the longitudinal stability of the car while driving, this paper designs a torque distribution system based on the optimal slip rate. Then, through software Carsim/simulink Co-simulation, the simulation results are analyzed and it is found that the acceleration slip regulation designed in this paper has good implementation effects and significant Improves the longitudinal stability and safety of the vehicle.