Simulation of Segmental Braking and Antiskid Control for Rapid Rail Transit Trains
At present,the ability of anti-skid control for rail transit trains is affecting the braking performance and stability of the train.In order to improve the safety of rail transit trains and control their sliding state by sectional bra-king,this paper proposed a method of simulating anti-skid control of rapid rail transit trains in a sectional braking way.At first,a longitudinal kinematic model of the rail transit train was built after analyzing the change curve of the adhesion force and drift between wheel and rail.Based on the model,the braking process of the train was divided into several groups of braking sections.Finally,the braking sections were combined with the sliding mode controller to re-alize the anti-skid control for rail transit trains.Simulation results show that the actual speed controlled by the pro-posed method is consistent with the expected driving speed whether the rail adhesion condition is always kept at a low level or the adhesion condition changes suddenly.Therefore,the method has a good control effect.
Rail transit trainLongitudinal kinematic modelBraking sectionSliding mode controllerAnti-skid control
NETL
NSTL
万方数据
维普
