Fault Diagnosis Method Based on D-S Evidence Theory Information Fusion
Fang Li · Journal of Gun Launch & Control · 2008
The application of D-S evidence theory in fault diagnosis and fault recognition were discussed and simulated.Interrelated conceptions of evidence theory were introduced,and a method of constructing basic probability evaluation function and selecting classification rule was presented.By use of D-S evidence theory method,the system fault was analyzed.The problem to be solved firstly was to analyze system recognition frame and construction of fault feature vector.Taking a fault of aviation power supply system as an example,the diagnosis,simulation,contrast and recognition experiments were performed,and the feasibility of application of D-S evidence theory in fault diagnosis was verified.The simulation results indicated that this method can be used in state monitor and fault diagnosis of aviation power supply system,and it can greatly improve accuracy,credibility,and reliability of fault diagnosis.