The Method of Fault Diagnosis for Servo System Based on Fuzzy Fault Tree Analysis

Aimed at the complexity of the fault diagnosis of radar servo system on the ship, the pater puts forward the method of fuzzy fault tree analysis. The paper constructs the fault tree for antenna not running. And then the quantitative analysis of the fault tree is accomplished by founding models such as exact and fuzzy fault probability of bottom things, and importance analysis of bottom things etc. Finally, the feasibility of models is validated by data calculating.