Vol. 160, Issue 12, December 2013, pp. 563-569

Abstract: With the development of the in-wheel motor technology, driving, braking and active suspension are integrated in single in-wheel motor. It is easier to achieve the integrated control for in-wheel motor electric vehicle through X-by-wire technology. For enhancing the vehicle handling and stability, the integrated control of active steering (AFS), direct yaw moment (DYC) and active suspension (AS) is studied in this paper. The integrated algorithm adopts hierarchical integrated control structure. The model predictive controller is designed. The driving torque control allocation rules and active suspension control methods are studied. It achieves integrated control of AFS/DYC and integrated control of AFS/DYC/AS. The simulation test is used to verify the algorithm. The result shows that the algorithm can make the vehicle follow the desired values effectively and enhance the vehicle stability and active safety in extreme conditions.

Keywords: In-wheel motor, Electric vehicle, Integrated control, X-by-wire technology, Active steering, Direct yaw moment, Active suspension.

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