Abstract: The Direct Yaw Moment Control (DYC) is an effective way to enhance the two-dimensional motion stability of vehicles. A two-wheel vehicle model as a reference model was built to improve the performance and the practicality of two-dimensional motion control for electric vehicle in-wheel motors. The traction control was based on Maximum Transmissible Torque Estimation (MTTE) for constraining the slip effectively to increase the longitudinal friction force and lateral friction force, but also could provide some additional information on tire-road conditions. A new DYC topology was proposed based on MTTE for electric vehicles. The comparative numerical simulation of the whole control system between the normal DYC and the DYC enhanced by MTTE demonstrated the advantages of the proposed control strategy.

Key words: electric vehicle, direct yaw moment control (DYC), maximum transmissible torque estimation (MTTE), stability control, in-wheel motor