Research on Safety-oriented Modeling Method of Complex System

The relationship between components in modern complex systems is becoming more and more complex. The local disturbance in the system may cause global impact due to fault correlation. In view of this, the traditional safety model cannot be described comprehensively and objectively, and the model has some problems, such as inconsistency with the design model, poor objectivity, and difficulty in ensuring completeness. Based on the multi-view modeling framework of DoDAF, the Sys-DoD model focus on safety is established by using SysML. The model can describe the causal logic and propagation relationship between the components of complex system in the same and different hierarchies, and provide a complete and accurate model support for subsequent safety analysis and risk assessment.