Structure-based system fault behavior modeling method

With increases in system complexity, new characteristics emerge continuously, and public attention is gradually attracted to mechanisms of system faults. Study of fault behavior and fault propagation modes is oriented at further depicting mechanism of fault of complicated system and clarifying the evolution of system fault behavior by reasoning based on propagation models, thus laying the foundation for technologies e.g. system diagnosis and prediction. In the paper, a structure-based system fault behavior modeling method is studied against influence of design of system structure. A structure-based system fault behavior model, entity, is built. Moreover, fault behavior models of basic unit and fault behavior propagation are given in detail, and detailed rules for behavior and fault propagation are given to illustration the procedure of fault propagation in system. We propose SEMOPN (With Select Mechanism Entity Oriented Petri Net) model to describe entities with Petri Net's thought simulation and the procedure of fault propagation is simulated. Reliability is modeled from a brand-new angle. The model can describe laws by which system faults occur and are expressed, effectively providing technical support for system diagnosis and fault monitoring.