Qualitative Reasoning Based Fault Propagation Analysis Method for Amplifying Circuits

Abstract

The invention provides an amplifying circuit fault propagation analytic method based on qualitative reasoning. The method comprises the following steps: 1) decomposing the amplifying circuit system layer into a circuit system layer, a functional module layer and a component layer, and conducting functional logic analysis; 2) building various components connectedness mould in the amplifying circuit; 3) building functional mould level qualitative network; 4) building system level qualitative network; 5) selecting the fault source node and conducting description; 6) conducting transversal spread reasoning to the qualitative network of the fault source node by breadth-first search principle; 7) transmitting the transversal spread reasoning result to a corresponding node in the upper layer qualitative network, and setting the upper layer node as a node B; 8) taking the node B as a new fault source node; 9) determining whether the fault source node is the top layer node of the amplifying circuit system or not. If not, returning to the step 6; if yes, conducting the step 10; and 10) conducting fault propagation result recording and fault influence identifying. The method provided by the invention solves the trouble that the conventional qualitative method cannot calculate non-structural fault, can intuitively reflect the changing condition during the process of fault signal propagation, and has an engineering application value.

Description

technical field [0001] The invention relates to a qualitative reasoning-based analysis method for fault propagation of an amplifying circuit, which uses hierarchical qualitative modeling and qualitative reasoning to analyze the propagation process of a single point fault in the amplifying circuit, and obtains the analysis result of the fault impact of the amplifying circuit. Reliability modeling and simulation analysis field. Background technique [0002] Fault propagation is one of the frontier directions of reliability system engineering research. Its essence is the flow process of fault signals in the network. It is the connection between the components of the network that determines the propagation of fault signals. The study of circuit fault propagation is the transmission of fault signals in the circuit, and the impact of local faults on the surrounding circuits or the overall function of the circuit. It is of great significance to the development of reliability syste...

AI Technical Summary

Problems solved by technology

The present invention aims to expand the scope of application of existing qualitative analysis methods and tools in the field of fault propagation to solve various practical problems caused by fault propagation in the amplifying circuit system

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