The qualitative modeling method of fault propagation in electronic components

According to the electronic components in analog circuit, a new qualitative modeling method for the fault propagation in components was presented in this paper. Firstly, the related concepts of fault propagation were introduced based on the existing study. Then, a definition to the fault propagation model of electronic components, named connectivity model, was clarified. Furthermore, the corresponding impact mechanism and the qualitative modeling method of fault propagation were put forward. Finally, the connectivity models of several typical electronic components were established. The proposed qualitative modeling method of components is verified by tests in PSPICE, which provides the foundation of the qualitative modeling and reasoning of fault propagation in circuit systems.