Method for selecting function-maintenance testing points of avionic assembly

Abstract

The invention discloses a method for selecting the function-maintenance testing points of an avionic assembly, which comprises the following steps of: carrying out classification analysis on an analog-circuit testing method, and carrying out the focused analysis of a fault dictionary method; establishing a preferred mathematical model of the testing points on the basis of a fuzzy set; selecting an optimal testing point, wherein the testing points are as few as possible; and establishing a preferred strategy of the testing points, making a preferred scheme of the testing points through the mathematical model and a fault-diagnosis analyzing method, and realizing the highest fault-detecting rate and the highest fault-isolating rate with the lowest testing cost. The invention provides a new preferred testing-point algorithm, and practical circuits are combined for simulation, so that the problem that the division of a traditional fuzzy set and the selection of the testing points are not optimized enough is solved, and the fault detecting and isolating efficiency of an analog-circuit system is improved.

Description

technical field [0001] The invention relates to the technical field of avionics equipment testing, in particular to a method for selecting test points for function maintenance of avionics components. Background technique [0002] At present, the development of analog circuit fault test theory is relatively slow. There are roughly two reasons: one is that the integration of analog systems is low, and the scale of traditional analog circuits is also small. Therefore, manual testing and maintenance can also meet actual needs, and industrial production There is no urgent requirement like relatively large-scale digital system testing, so the research on testing and diagnosis of analog circuits lacks strong motivation. Another reason is that the testing and diagnosis of analog circuits is far more difficult than that of digital systems. Therefore, both in theory and in methods are still mature, and there are relatively few practical methods. The main reasons are: [0003] 1. The...

AI Technical Summary

Problems solved by technology

After analyzing the advantages and disadvantages of the traditional fault dictionary method and the improved fault dictionary method, combined with the actual circuit for simulation, in order to successfully solve the problem of insufficient optimization of traditional fuzzy set division and test point selection, and then improve the efficiency of fault detection and isolation of analog circuit systems

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