Braking Process Modeling and Simulation of CRH2 Electric Multiple Unit

Train braking process was greatly affected by factors such as environment, line condition and train driver operation proficiency. How to establish train braking process model and determine the effective braking control strategy is the foundation of achieving the safe and reliable operation of the train. By taking the CRH2 -300 Electric Multiple Unit(EMU) as an example, based on the train braking process operation characteristics and brake deceleration mode curve, multiple models description method for its braking process have been developed with the data-driven modeling. And the efficiency of model is verified with China train control system level 3(CTCS-3). Simulation results show the established braking process model is suitable not only for the common brake but also has high tracking accuracy for the emergency brake. Furthermore, the model is satisfied with requirement of emergency braking distance that should less than 3700m as well as reduces the energy consumption.