Semi-active Suspension Sliding Mode Control Based on Preview Feed-forward
The performance of the suspension system affects the ride comfort of a vehicle,in order to improve the performance of the suspension system,the semi-active suspension is selected to replace the traditional passive suspension that lacks sufficient ride accomplishment.Using sprung displacement and sprung acceleration as evaluation indicators,a hybrid control strategy including preview control,fuzzy control and sliding mode control was proposed.Combined with a Kalman state observer,the designed control strategy was validated and analyzed by establishing a two-degree-of-freedom semi-active suspension model.The simulation results show that,compared with the passive suspension,the spring displacement of the body can be tracked to the expected value in time when driving under the established road surface model,and the root mean square value of the body spring acceleration is reduced by 12.6％,which improves the ride comfort of the car.
万方数据
维普
