Research on semi-active seat suspension control of high-speed trains based on magnetorheological dampers
In this paper,based on the three-degree-of-freedom model system of"seat-body-frame"of high-speed train,semi-active control strategies based on magnetorheological dampers are proposed re-spectively,simulated and analyzed,such as MPC control,canopy damping control and fuzzy control.The results show that compared with the passive control,the root mean square(RMS)values of the seat vibration acceleration are reduced by using the semi-active control,in which the RMS values of the seat acceleration are reduced by 16.38%,25.37%,and 17.67%with the MPC control,canopy control,and fuzzy control,respectively.From the perspective of the frequency domain,the three con-trol methods are able to reduce the vibration amplitude of the seat in the 5 Hz frequency band.Al-though the canopy damping control reduces the amplitude of the seat in the 5 Hz frequency band the most,but at the same time it causes the vibration amplitude of the seat above 5 Hz to increase,while the MPC and fuzzy control methods do not have a significant effect on the vibration amplitude of the seat above 5 Hz.
seat suspensionsemi-active controlMPC controlcanopy damping controlfuzzy control
万方数据
维普
