Tire Slip Energy Application in Electric Vehicles Control

Since there is less research on the effect of the minimizing tire slip energy, different opinions are resulted on the key issues in vehicle stability control area. In this paper, a new method was proposed for the control structure and torque distribution on 4 in-wheel driven electric vehicle to take into account the tire slip energy. Combining the advanced chassis control HCC structure with optimal theory, the vehicle stability was achieved by optimally controlling the active front wheel steering and direct yaw moment, separated from HCC structure. More importantly, an increment minimization method of slip energy torque distribution was also proposed for HCC structure, and its related dynamic simulation was carried out based on UniTire slip energy model. Compared with the traditional control structure, that the vehicle is unstable without adjusting the front wheel steering and yaw moment, the structure proposed in the dissertation can ensure the lateral stability with minimizing the tire workload usage or minimizing the tire slip energy.