Study On The Operating Strategy Of10000t Train With Intelligent Braking System

With the development and progress of the world rail transport technology, high-speed heavy technology has got more and more attention. Many countries have opened the heavy freight train, at the same time, they also encountered a number of technical problems, especially the large vertical impulse. The longitudinal impulse in train running will cause some damage on vehicle structure, affecting the quality and safety of train operation. Braking system as a vital component of the entire train, is a major factor affecting the vertical impulse. The traditional pure air brake system can not meet the rapid development of heavy-haul trains, and the electrically controlled air brake system widely used in foreign countries can not be achieved in our short-term. The content of this study is an intelligent braking system which is a combination of pure air brake system and electronically controlled air brake system, the system divides a train into several group of intelligent brake, shortens the braking of the train braking wave transmission distance, improves the synchronization of the braking of the train and decreases the longitudinal impulse when the train is braking.this paper uses the co-simulation system of brake system and longitudinal dynamics system to study the impact of intelligent braking system on the train braking characteristics and vertical impulse, and compares with pure air brake. The study designs two forms of lines of Concave ramp and convex ramp, and analyzes the braking performance of the train from the position of the ramp and ramp slope. Discussing on intelligent braking system synchronization control and asynchronous control two ways, to find the optimal control scheme of train passing through complex ramp.The study shows that:on the flat slopes, the intelligent brake system making the synchronization control strategies will reduce more than80%of the longitudinal impulse between trains; In the concave ramp line, compared to synchronous control, intelligent braking system making asynchronous brake will reduce hook force by12.5%in common braking conditions,8.3%in an emergency braking condition; In the convex ramp, Intelligent braking system can not reduce the retractor force synchronization control compared to the pure air brake, but in emergency braking condition, compared to synchronization control the retractors force will be reduced by7.3%.