Simulation Research on Vehicle Stability based on Sliding Mode Variable Structure Control

Abstract. This paper aims to explore a vehicle stability control strategy based on sliding mode variable structure control theory. The smart car is used as the simulation object, and the vehicle's centroid angle and control system are mathematically modeled and controlled. The research was carried out and joint simulations were carried out with three typical working conditions: icy road surface, wet asphalt road surface and dry concrete. The simulation results show that the designed control algorithm can significantly improve the lateral stability of the vehicle, so that the vehicle has strong adaptability to the road surface and different driving speed under different working conditions, thus improving the braking of the car as a whole. Performance, drive performance and steering performance.