Research On Design And Reliability Of The Braking System Based On Single Axle Braking Unit

The brake system of train is an important part of railway traffic, and it plays an important role in the safety and reliability of train. Therefore, to design a higher response rate, finer control performance, more stable and more reliable brake system, is favorable to guarantee the safety of train and the early detection of hidden danger. Designing physical simulation experiment platform of train brake system and testing the braking effect in different situations is the base of the research on the reliabilityThis paper is aimed at setting up a semi physical simulation platform for the whole train braking system and researching the reliability, all of these are on the base the single axle braking unit. The main research contents are as follows:1) This paper will make will make an analysis of the development course of brake system, a detailed introduction of the single axle braking unit, and the introduction of the whole simulation platform.2) This paper will design the monitoring module of the braking system, which is to manage the running state of the carriage and to realize the functions such as the train brake, emergency brake, slip protection and fault diagnosis.3) Based on FPGA, this paper will design the multifunction vehicle bus. This serial data communication bus has the features of interoperability and interchangeability and it can ensure the safety of braking communication.4) This paper will use dynamic fault tree model to analysis the reliability of two braking system based of the single axle type and vehicle control type. And it will compare the results of two types and provide the mathematical model for further improving.