Backward P-Reasoning and Fault Status Identification-Discovery in Electronic System

Abstract

Using P-reasoning(P=Packet), backward P-reasoning is presented. Backward P-reasoning is consisted of internal backward P-reasoning and outer backward P-reasoning. Backward P-reasoning has dynamic characterisitic, while the fault status in electronic system also has the dynamic characteristic. The identification-discovery of elctronic fault status is to find the location and property of fault by using the information collected, and the fault is the attribute set α, so the fault status discovery-identification in electronic system is similar to backward P-reasoning. Under a certain condition, backward P-reasoning can be restored to the general reasoning. The paper gives the structure of backward P-reasoning and some theory results. Using the study results, the application of backwark P-reasoning in fault status identification- discovery of electronic system is proposed.