Abstract：To improve the failsafe drive performance of four in-wheel motor-drive-type EVs, a novel control strategy of the motor failure condition was proposed. The motor failure factor was detected to estimate failure type. According to the steering wheel angle and the accelerator pedal location, the control target was confirmed, and the coordination control of motor torque was regulated quickly to meet the expectations of vehicle longitudinal force and yawing moment. Based on the dynamic model of a seven DOF in-wheel motor drive vehicle, the simulation of the proposed control strategy was carried out. The results show that the algorithm can enhance driving performance in high accelerator pedal and small steering wheel angle, and improve riding safety in low accelerator pedal or large steering wheel angle.
2014, Vol. 35 
