TT & C system fault diagnosis method based on fault tree

Complex aerospace control equipment mainly depends on manual maintenance for a long time,due to lack of common effective fault diagnosis. In response to this situation,a fault tree model for aerospace control systems was constructed with the fault tree analysis method after the basic characteristics of fault diagnosis for aerospace control systems were analyzed.The modeling methods and inference engine design principles processes are described in this paper. A fault diagnosis example is adopted to validate the method. The results indicate that the method is efficient,reliable,and suitable for most current aerospace control equipments.