Abstract:Regarding to the lateral semi-active suspension system of high-speed locomotive based on the Magnetorheological damper, parameter adaptive fuzzy control strategy on the basis of the quantization factor, scaling factor of the general fuzzy control were brought forward based on the analysis of the modified BOUC_WEN mechanical model. Then the lateral semi-active suspension system based on the strategy of parameter adaptive fuzzy control was established and analyzed in SIMULINK. The results showed that compared with the strategy of passive control and general fuzzy control, parameter adaptive fuzzy control strategy could reduce the lateral vibration acceleration obviously and made the vehicle stability and comfort of passengers improved.