The task reliability frame drawings are given respectively to the air circuit part and electrical circuit part of micro-computer controlled straight electro-pneumatic braking system, and the reliability theory is used to derive the task reliability calculation formula.
On this basis, the ways to improve the reliability of micro-computer controlled straight electro-pneumatic braking system are analyzed initially, and the method to analyze the reliability of complex systems is given out.
With the fundamental principles of reliability theory of the system, the reliability frame drawing method is used to set up the reliability model of the micro-computer controlled straight electro-pneumatic braking system developed domestically.
Described are the braking and releasing characteristics of the newly developed MER type control device of electro pneumatic braking on powered car train sets and light rail vehicles,the main advantages and technical parameters of the XFD F type wheel tread braking unit.
Basedon the tests data of the brake system of high-speed electric motor train unit CHINESE STAR and PIONEER developed by ourselves,this paper analyzed the air-electronic combine brake of through-type electropneumatic brake mode,and disc brake device of high-speed electric motor train unit.
This PLC device, which accords with power supply grade on railway in China, realizes auxiliary electric control of the laboratorial electropneumatic brake system through micro- controller, Meanwhile, electromagnetic immunity is considered.
The paper combined the latest theories in the world, based on the length of sample interval, interval of samples and sample frequency and so on, put forward out the measure scheme for electromagnetic radiation of computer control units of system for electro-pneumatic brake and gave the measuring and analysing.