Research on vehicle stability control under crosswind disturbance

Aiming at the problem that the high-speed vehicle is susceptible to yaw instability and deviation from the predetermined path under crosswind disturbances, this paper establishes an eight-degree-of-freedom vehicle dynamics model considering crosswind action, and uses the phase plane method to identify the vehicle's state in the crosswind environment. The coordinated controller of active front-wheel steering (AFS) and direct yaw-moment control (DYC) has been designed to control the stability of the vehicle in the crosswind environment. The control algorithm was simulated and verified under the crosswind disturbance condition, and the results show that the lateral displacement of the vehicle with the coordinated controller of AFS and DYC is less than that of the vehicle without control or with a single controller, and the vehicle yaw rate, sideslip angle, and lateral acceleration are all significantly improved. The controller improves the driving safety and stability of the vehicle in the crosswind environment.