SFEP中事件间逻辑关系的可拓表示方法研究OA

In order to further realize the extension representation of the system fault evolution process(SFEP)and real-ize the analysis of the unity of opposites of SFEP,this paper establishes an extension representation method for the lo-gical relationships between events.Firstly,the extension principle of SFEP is provided,and the extension representation of experience events,influencing factors,and evolution conditions is defined.Secondly,the extension representation of the logical relationships between events,the flexible logic,and the calculation of the system fault probability are real-ized.Finally,the significance of the research is discussed.The research shows that SFEP possesses a contradictory unity;there are essential differences between logical relationships and evolutionary conditions.The"and-or"logical re-lationships between cause and result events are divided into four types,and their extension representation and system fault probability calculation methods are obtained.All 20 kinds of flexible logic can be obtained by the superposition of"and/or"logic,and their extension representation and system fault probability calculation are realized.The paper real-izes the description of multiple logical relationships of multi-cause-result events.The significance lies in revealing the mechanism of interaction between events through formal and quantitative methods,and providing methods and tech-niques for system fault analysis.