An Extension Theory of System Fault Evolution Process

To study the representation, analysis and processing of system fault evolution process (SFEP), the extension theory is proposed, using intelligent theory and meeting the analysis requirements of system function state. Firstly, the possibility of the combination of system function state and extension theory is discussed. Secondly, the extension representation of SFEP is studied, and the basic unit of SFEP is determined, which is cause event-transfer condition-result event. It is considered that the event is a compound action element of the action element and matter element, and the transfer is a compound relation element of the relation element and the above two compound action elements, which is called the transfer element. Finally, the divergence, correlation, implication and expansibility of the transfer element are studied, and the effect of the method on the analysis of SFEP is explained. The research is the beginning of studying SFEP through extension theory, which provides intelligent analysis method and basic theory for grasping system reliability and failure, i.e. system function state.