关键词: 复杂机电系统, 符号有向图, 故障逻辑网络图, 故障溯源分析

Abstract: According to the different characteristics of fault development in unit equipments and between each equipment,a modeling method for integration model of fault root causes tracing based on Signed Directed Graph-Fault Graph-(SDG-FG-)was proposed,in which two layers of SDG model layer and FG model layer was used to describe.The SDG model layer was used to describe the causal ordering relationships between the equipment of system,and the FG model layer was used to describe the relation between structure and failure modes of equipment.The FG model layer could be integrated with the SDG model layer into SDG-FG model through status variable emerging,which could provide a platform for fault root causes tracing analysis.

Key words: complex electromechanical system, signed directed graph, fault logic network graph, fault root causes tracing analysis