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Integrated control of Active Front Steering and Electronic Stability Program

In this paper, an integrated vehicle dynamics control system is designed to improve vehicle handling and stability by coordinating control of Active Front Steering (AFS) and Electronic Stability Program (ESP). The integrated control system includes a coordinated controller in upper layer and two subsystem controllers in lower layer. The control algorithm based on β - β̇ phase plane is used to identify the driving situations. And a coordinated control rule based on integrated scheme is employed to determine and allocate the control tasks between the two subsystems. The simulation results show that the proposed control strategy is able to enhance the tracking performance of the reference yaw rate and improve the driving steer-ability of the vehicle.