Sliding mode control and multi-objective optimization of the whole vehicle active suspension
In order to improve the performance of vehicle active suspension system,a multi-objective op-timization method for control parameters of active suspension system is proposed based on the established vehicle active suspension system model and sliding mode variable structure control theory.Based on the arrival condition of the sliding mode surface and Lyapunov stability theory,the stability of the sliding mode controller is verified.A multi-objective optimization problem is established with vehicle roll angle acceleration,vehicle pitch angle acceleration,and vehicle vertical acceleration as the control objectives.The controller parameters are optimized using the particle swarm optimization algorithm.The simulation results show that the three control objective functions of the optimized active suspension system have de-creased by 10.3%,27.3%,and 20.0%,respectively,compared to pre-optimization.The sliding mode control strategy for the vehicle active suspension based on multi-objective optimization improves the ride comfort and handling stability of the vehicle.
万方数据
维普
