半挂汽车列车AFS/DYC集成控制策略设计及验证

With tracking yaw rate and bow angle of tractor as targets, the integrated control strategy of active front steering/direct yaw-moment control (AFS/DYC) for vehicle was designed based on the linear monorail vehicle model with three degrees of freedom. The closed-loop simulation model of vehicle was established based on TruckSim and Simulink softwares. The double lane change and hook steering simulations were carried out. The simulation results show that under the double lane change conditions with adhesion coefficient of 0.85 and speed of 105 km·h^-1, the vehicle can well track the reference response, and the phenomenon of vibration in open-loop system is weakened with improved path tracking. In hooking steering simulation, when the adhesion coefficient is 0.30 with speed of 55 km·h^-1, the closed-loop system runs well, and vehicle can enter hook steering without sideslipping and folding. The designed AFS/DYC control strategy is effective and can improve the vehicle yaw stability.