A Research Into the Reliability of Equipment-Integrated System Regarding High-Speed Train Based on Network Model

The equipment-integrated system with highly coupled and correlated characteristics has become the main mode of the modern production system. Reliability plays an important role in the production of the system and its normal and efficient operation. Firstly, aimed at the composition of equipment-integrated system and its working mechanism, a method for evaluating the reliability of the node based on the network model is proposed in this paper, including correlation reliability of node, use reliability of node. Secondly, reliability calculation model of equipment-integrated system based on improved Markov is established considering the analysis of the basic structure principle and fault statistic method of high-speed train system. Thirdly, through the quantitative analysis of the reliability network model of the traction supply system, the reliability of the subsystem and the components of the system are calculated, with the key nodes of the system obtained by the structure analysis of the system. Results show that the network model is suitable for equipment-integrated system regarding high-speed train, and the modeling process from the local point to the whole system is simple and effective. With the network model of traction supply subsystem, the reliability of subsystems and components of the system are obtained, which provide a basis for the maintenance of the equipment-integrated system with respect to the high-speed train.