Research Of Fault Tree Analysis Based On Fuzzy Theory

Fault Tree Analysis as a method for System Reliability Analysis is considered one of the simplest, most effective and prospective tools for analyzing complicated system .Traditionally, FTA is base on Boolean Algebra and Probability Theory. It is widely used in many fields for its success on solving probabilistic uncertainty.But in the large-scale complicated system, there is lots of fuzzy uncertainty. So , it is significant to combined FTA with Fuzzy Theory.Based on the theory of Trigonal Fuzzy Data, this paper probes into Fuzzy FTA.Base on FTA model, this paper also proposes a new Fuzzy Fault Diagnosis Algorithm for the need of the hydraulic motor system's fault diagnosis.