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fmeca method for spaceborne electronic system based on rough set theory and reliability prediction

A rough set theory and electronic system technology, applied in the field of spaceborne electronic systems, can solve the problem of low accuracy

Active Publication Date: 2016-07-13
36TH RES INST OF CETC
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  • Claims
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Problems solved by technology

[0006] In view of the above-mentioned analysis, the present invention aims to provide a FMECA method based on rough set theory and reliability prediction for on-board electronic systems, in order to solve the problem of relatively low accuracy in the FMECA methods of existing on-board electronic systems

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  • fmeca method for spaceborne electronic system based on rough set theory and reliability prediction
  • fmeca method for spaceborne electronic system based on rough set theory and reliability prediction
  • fmeca method for spaceborne electronic system based on rough set theory and reliability prediction

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Embodiment Construction

[0073] Preferred embodiments of the present invention will be specifically described below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the application and are used together with the embodiments of the present invention to explain the principles of the present invention. For the sake of clarity and simplicity, detailed descriptions of known functions and constructions in the devices described herein will be omitted when it may obscure the subject matter of the present invention.

[0074] Such as figure 1 as shown, figure 1 It is a schematic flow chart of the method described in the embodiment of the present invention, which may specifically include steps:

[0075] Step 1: Start the qualitative FMECA analysis of the on-board electronic system to determine the failure mode. The specific analysis and determination method can adopt the existing mature solutions in the prior art, and the embodiments of the present invention ...

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Abstract

The invention provides a satellite-borne electronic system FMECA method based on the rough set theory and reliability prediction. The method includes the following steps: determining the fault mode of a satellite-borne electronic system, constructing a weight rough set with relevant parameters of the fault mode normalized based on the rough set theory and according to the grading of importance of the relevant parameters of the fault mode conducted by all the experts on an FMECA analysis team, conducting grading on the relevant parameters of all the fault modes by all the experts on the FMECA analysis team, constructing a grading rough set of all the fault modes based on the rough set theory, constructing a weight grading rough set matrix with all the fault modes normalized based on the weight rough set and the grading rough set, calculating approximate coefficients of all the fault modes according to elements of the weight grading rough set matrix, and determining priority RPNs of all the fault modes according to the approximate coefficients of all the fault modes. The method is clear in process, easy to apply and remarkable in value.

Description

technical field [0001] The invention relates to the technical field of on-board electronic systems, in particular to an FMECA (failure mode, impact and hazard analysis) method for on-board electronic systems based on rough set theory and reliability prediction. Background technique [0002] FMECA is a method for identifying and eliminating potential failures, problems, and errors in the design and manufacturing process. The main purpose of FMECA is to ensure that defective products or services are not submitted to users. Because FMECA can guide designers to carry out continuous design improvement in the product design stage, FMECA has gradually become a powerful reliability analysis method widely used in many industrial fields. [0003] There are various types of FMECA, including functional FMECA, hardware FMECA, software FMECA, process FMECA, etc. At present, functional or hardware FMECA needs to be carried out at each stage of the development of each spaceborne electroni...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00
Inventor 尤明懿
Owner 36TH RES INST OF CETC