An adaptive fuzzy PID control strategy for vehicle yaw stability

摘要

In order to improve the safety and stability of the vehicle under the different road conditions, in this paper, the basic principle of the vehicle handling stability is analyzed, a control strategy based on fuzzy control adaptive adjust PID parameters is proposed. The linear two-degree-of-freedom vehicle model was set up in Simulink and the vehicle stability test was carried out with the simulation platform jointly established with CarSim. The results show that the proposed control strategy can improve the safety and stability of the vehicle in different road conditions. In the emergency double-shift line condition of snow and dry road, the control strategy proposed in this paper is reduced by 45.57%/47.16% and 22.18%/13.86% respectively compared with the peak of the steering wheel angle and yaw rate of CarSim's original control strategy, which is of great significance to improve the handling stability of the vehicle.