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A Method for Overall Determination of Testing Laboratory Test Faults

A determination method and laboratory technology, applied in the aviation field, can solve the problems that affect the determination of fault samples and affect the test evaluation results, and achieve the effect of ensuring completeness and validity, authenticity and objectivity, and promoting the application value.

Active Publication Date: 2019-08-02
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The determination of the fault population will directly affect the determination of the fault samples, and then affect the test evaluation results

Method used

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  • A Method for Overall Determination of Testing Laboratory Test Faults
  • A Method for Overall Determination of Testing Laboratory Test Faults

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Experimental program
Comparison scheme
Effect test

Embodiment

[0031] A method for overall determination of testing laboratory test failures, comprising the steps of:

[0032] Step 1: Determination of the complete set of faults

[0033] Through the analysis, it can be known that the complete set of faults of a complex equipment is shown in Table 1.

[0034] Table 1 Complete set of faults of a certain complex equipment

[0035]

[0036]

[0037] Step 2: Failure Mode Hierarchy Selection

[0038] If the tested product is "complex equipment", then "analyze failure" selects the sum of "LRU layer failure mode" and "independent LRU and complex equipment layer failure mode"; "natural failure" should be "LRU layer or complex equipment layer failure mode ". Then the overall failure should be determined in the scope of failure in Table 2.

[0039] Table 2 The overall determination range of a complex equipment failure

[0040] serial number failure mode Failure Mode Hierarchy Fault category Whether independent failure ...

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PUM

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Abstract

The invention belongs to the field of aviation and relates to a method for confirming a general laboratory test fault. The method comprises the following steps: (1) collecting 'analyzed fault' of a tested sample from an FMECA report of the tested sample and collecting 'natural fault' of the tested sample from an FRACAS report by a system; and taking the sum of the collected 'analyzed fault' and 'natural fault' as a whole fault set, namely, a general fault confirming scope; (2) when the tested sample is a 'simple device', confirming the 'analyzed fault' as the sum of 'SRU layer fault mode' and 'independent LRU layer fault mode' and confirming the 'natural fault' as 'LRU layer fault mode'; and when the tested sample is a 'complex device', confirming the 'analyzed fault' as the sum of 'LRU layer fault mode' and 'independent LRU layer fault mode' and confirming the 'natural fault' as 'LRU layer or complex device layer fault mode'; and (3) analyzing the 'analyzed fault' and the 'natural fault' of the tested sample, screening and then acquiring the sum of fault, namely, the general fault of the tested sample.

Description

technical field [0001] The invention belongs to the field of aviation, and relates to a method for determining overall faults, in particular to a method for determining overall faults in testing laboratories. Background technique [0002] Testable laboratory test refers to the use of fault injection method to simulate specific faults of the product under test, and conduct actual tests with the test method of testable design to judge whether the test results meet expectations, and then find the testable design defects of the tested product, evaluate and verify The test process of whether the testability level of the product under test meets the requirements. Wherein, the above-mentioned "specific fault" refers to the part of faults extracted from the "fault population" of the product under test, that is, the fault sample. The "fault population" refers to the collection of test design assessment faults of the product under test. [0003] The determination of the fault popula...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64F5/60
Inventor 郭丹韩斌
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA