The Dynamic Fault Tree Analysis Method Based on Fuzzy MarkovProcess and Its Application

摘要

Traditional fault tree analysis is an effective method to analyze system reliability that isrnbased on static logic, and the system which considering the influence in combination of fuzzyrnuncertainty and dynamic failure characters is still difficult to estimate precisely. The fuzzy numberrntheory can fully consider the fuzzy uncertainty of system which use various aspects information, andrnMarkov process can describe the dynamic failure characteristics of the system through the change ofrnstate space, then the fuzzy number theory and Markov process is introduced into dynamic fault treernanalysis to overcome the disadvantage of traditional fault tree. The method was applied to dynamicrnfault tree research of an internal combustion engine to prove the validity.