Lateral Vibration Control Of Railway Vehicle By Means Of Magntorheological Damper

In recent years, with the rapid development of the high-speed railway, the speediness andconvenience of the high-speed train have attracted a great number of passengers and brought hugeeconomic benefits. Now many countries in the world are actively developing the high-speed railwaytechnology. Meanwhile, with the raising of the train speed, the dynamic environment of train tends todegrade. Therefore, it is quite desirable to ensure the running quality of the train. There are usually twomeasures to be taken. The one is to build the high-quality tracks to reduce the excitation of the vibrationsource, and the other is to adopt the vibration isolation, the active suspension and the semi-activesuspension to improve the smoothness of the running. Compared with the vertical vibration, the lateralvibration is more concerned. Therefore, this thesis deals with the control problem of the lateral vibrationof the high-speed train in order to improve the relevant running quality.A17degrees of freedom lateral dynamic model of the whole vehicle is established. The irregulartime-domain signal of the track is simulated according to the Blackman-Tukey method, and the inputway of the track is further improved. By analyzing the dynamic performance of the train with thepassive suspension, the control structure base on the sky-hook damping principle is proposed, and afuzzy control method is applied to design the active suspension system of the train. As viewed from thepractical use, the semi-active suspension system using the magntorheological damper is employed toimprove the dynamic performance of the train. The neural network based inverse model is used todescribe the dynamics and properties of the damper. The simulation results show that the correspondingsemi-active system has an ideal control effect.