Adaptive Fuzzy Control of Lateral Semi-active Suspension for High-Speed Railway Vehicle

Abstract

In order to meet the require of high speed and comfort and low producing cost, semi-active suspension for high-speed railway vehicle is adopted to control the vibration of car body. But accurate mathematic model of vehicle dynamics system is difficult to establish for the particularity of wheel-rail interaction and non-linear of system sky damper control needs the absolute speed of car body that its exact value is difficult to obtain. So adaptive fuzzy control method based on the acceleration feedback is put forward in the paper. The method which can modify automatically the scaling factor and control rules according to the acceleration and its change rate of car body is simulated by using ADAMS and MATLAB software. The simulation results show that the method can attenuate the vibration of car body and improve the comfort and stationarity effectively.