Based On The Magnetorheological Damper Of High-speed Train Lateral Semi-active Vibration Control Methods Of Research

The suspension system is an important component of railway vehicle vibration, an intelligent control method for the vehicle suspension system is an effective approach to improve the smoothness, comfort and safety, which is beneficial to the high-speed train project in our country.The semi-active suspension system of high-speed train is simple, low power consumption, dependable, safe, which has become a focal point of research in high-speed railway vehicle intellectual suspension control. Magneto-rheological (MR) damper as a actuator of semi-active suspension has been subject to the attention of the majority of researchers, because it has a simple structure, continuously adjustable damping force and good temperature stability, etc. This paper studies the structural properties and damping principle of the MR damper, On this basis, the intelligent control methods and the theory of railway vehicle dynamics are applied to optimize the design and make simulation research. Some researches in this thesis have been done as follows:(1) Through the analysis of the structure of railway vehicle, it works out train transverse vibration dynamic differential equations. Then use simulation software to establish simulation model of10degrees of train vehicle.(2) On the basis of the structural principle and mathematical model of MR damper, gray prediction fuzzy control is used to control it. The result of simulation is compared with fuzzy control.(3) Based on the gray prediction control of MR damper, it proposes adaptive neuro-fuzzy control as a system controller, which desire high speed railway vehicle suspension system. At last, simulation research based on the riding comfort index has been made to evaluate the control effect.Simulation results demonstrate that the semi-active suspension control system of railway vehicle based on adaptive neuro-fuzzy control can effectively suppressed the lateral vibration. The lateral stability of high-speed train decreases24.6%, what’s more, the maximum and the root mean square value of the train body lateral acceleration and the difference of the speed of the train body and bogie largely decreases comparing with passive suspension system, which improves the quality of high-speed train running.