Coordinated Control of Electronic Stability Program and Active Front Steering

Abstract In this paper, the coordinated control system is proposed to improve vehicle handling and stability by coordinating control of Electronic Stability Program (ESP) and Active Front Steering (AFS). Firstly, we calculated the target yawing moment required to keep the vehicle stable according to PID control of the yaw-rate. Secondly, we proposed a fuzzy method to control Electronic Stability Program and Active Front Steering, then we used genetic algorithm to optimize the control rule to ensure the correctness and accuracy of the control rule. The performance of the integrated control system is evaluated by Computer simulations at two different running condition, we compared the performance of the integrated system with other situations such as only AFS control, only ESP control and no control. The results show that the method proposed in this paper is able to improve the driving dynamics and steering stability of the vehicle effectively.