Fault eliminating method based on evaluation of detecting points

Abstract

The invention relates to a fault eliminating method based on evaluation of detecting points, which comprises the steps of: listing a fault tree according to a fault phenomenon; determining fault probability and detecting cost; establishing logic structure weight of each detecting point through dichotomy; comprehensively evaluating the detecting points by the three factors for determining a preferred detecting point; then, detecting the detecting point; comparing a detecting result with a theoretical value; eliminating a no-fault branch in an original fault tree by judging whether the detecting point is correct; updating the fault tree; evaluating each detecting point in a new fault tree again; accordingly, selecting a new preferred detecting point for detection; repeating the steps for cycling the preferred detection; and positioning fault until only an output detecting point of a certain fault point is wrong in the fault tree and input detecting points are all correct. According to the invention, factors of the fault probability of fault points, the detecting cost of the detecting points, the logic structure weight of the detecting points in the whole fault tree and the like are comprehensively considered; and the method is simple and easy, has strong comprehensiveness and can provide fault elimination work with a guiding basis.

Description

technical field

[0001] The invention relates to a troubleshooting method based on detection point evaluation, in particular to a fault diagnosis method for electromechanical products, belongs to the technical field of electrical testing, and is applicable to troubleshooting of electrical systems in military and civilian fields. Background technique

[0002] Along with the strategic transformation of various services and arms, my country's weaponry and equipment construction has entered a new stage. The new generation of weaponry and equipment no longer pursues simple improvements in functions and performance indicators, but emphasizes the improvement of comprehensive combat effectiveness. This "soft" combat capability requirement puts forward higher requirements for the maintainability and testability of the product.

[0003] During the product testing process, on-site testers have to diagnose the faults that occur. The traditional fault diagnosis system relies too much on t...

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