Orthogonal optimal design for drive system parameter of electric vehicle based on vehicle driving cycle

In order to match and optimize the drive system of the electric vehicle, the electric vehicle model was established based on the design parameters of the vehicle. A novel method from orthogonal optimal design theoretic was proposed to select the most effective drive ratio for the vehicle based on the vehicle ECE driving cycle. And to obtain the optimal transmission ratio and develop the vehicle dynamic performance, a vehicle performance integration coefficient was defined to select the most effective drive ratio for the vehicle based on the proposed method. Finally, the vehicle performance was analyzed based on the optimization method proposed in this work. The simulation results show that the novel orthogonal optimal design method greatly meets drive targets in the ECE driving cycle, and it is much significant for the electric vehicle to improve the vehicle power performance and driving range.