A Reliability Modeling Method for Directed Acyclic Graph Network System

A mission reliability modeling method is proposed for directed acyclic graph network systems. By decomposing it into sub directed acyclic graphs along the path direction until it is decomposed into device units, and paralleling the sub directed acyclic graphs adjacent to each node, a mission reliability block diagram model of the network system is constructed in which the sub networks and devices are layer by layer parallel, and the discrete event simulation method is used for calculation, which can effectively solve the mission reliability modeling and calculation problem of such network system in engineering.