Electromechanical system multilayer reliability prediction method based on fuzzy evaluation

A technology of electromechanical systems and fuzzy judgments, applied in prediction, calculation, electrical digital data processing, etc., can solve problems such as the inability to distinguish the importance of system units

Active Publication Date: 2016-08-17
CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiency of the existing electromechanical system reliability prediction method - the importance of each system unit cannot be treated differently, and provide a multi-level reliability prediction method for electromechanical systems based on fuzzy judgment

Method used

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  • Electromechanical system multilayer reliability prediction method based on fuzzy evaluation
  • Electromechanical system multilayer reliability prediction method based on fuzzy evaluation
  • Electromechanical system multilayer reliability prediction method based on fuzzy evaluation

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Embodiment 1

[0045] Such as figure 1 As shown, a method for multi-level reliability prediction of electromechanical system based on fuzzy judgment. First, the electromechanical system is processed in a hierarchical structure; the hierarchy is divided from top to bottom, including system layer, sub-system layer, functional module layer, and basic functions The elements of each level are called units, the upper level is the parent unit level of the next level, and the next level is the child unit level of the previous level; and then the electromechanical system is multiplied from the bottom to the top. The calculation of the weight coefficient of the hierarchical unit and the reliability prediction. For electromechanical systems with different complexity, you can increase or decrease on the basis of the above 4 levels until the analysis needs are met. The method of weight coefficient calculation and reliability prediction includes the following steps:

[0046] Step 1. Sub-unit risk priority ...

Embodiment 2

[0075] Taking the electromechanical system of a ground high-mobility radar as an example, the above method is described in detail. The specific handling methods of this case are as follows:

[0076] Step 1. Hierarchical structure processing of electromechanical system

[0077] The electromechanical system is processed in a hierarchical structure, and the levels are divided from top to bottom, including the system layer, the sub-system layer, the function module layer and the basic function layer. Such as figure 2 As shown, the system layer is the radar electromechanical control system, the sub-system layer includes the leveling, erection and control sub-systems, the functional module layer includes functional modules such as bionic legs, support legs, and pitch, and the basic functional layer includes pin shafts, support leg structures, Basic units such as reducers.

[0078] Step 2. The calculation of the risk priority number of the bottom unit and the construction of the binary c...

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Abstract

The invention discloses an electromechanical system multilayer reliability prediction method based on fuzzy evaluation, wherein the electromechanical system multilayer reliability prediction method belongs to the field of electromechanical system reliability engineering technology. The method comprises the steps of performing layered structural processing on the electromechanical system by means of an analytic hierarchy process, layering the electromechanical system from top to bottom, wherein the electromechanical system comprises a system layer, a sub-system layer, a functional module layer and a basic functional layer; then, determining the weight coefficient of a sub unit relative to a father unit according to a risk priority number method and a fuzzy judgment matrix; and finally, establishing a multilayer reliability model which comprises a weighting coefficient, and successively performing reliability prediction on the electromechanical system. The electromechanical system multilayer reliability prediction method can be widely used in the field of electromechanical equipment reliability engineering and is particularly suitable for complicated system reliability optimization and fine design analysis.

Description

Technical field [0001] The invention belongs to the technical field of electromechanical system reliability engineering, and relates to an analytic hierarchy process and fuzzy theory application technology, and in particular to a method for predicting multi-level reliability of electromechanical systems based on fuzzy judgment. Background technique [0002] Reliability has become a common problem of complex electromechanical systems, and its indicators are regarded as important quality attributes, which are as important as technical and economic indicators such as system performance, cost, and efficiency. With the development of reliability engineering, the idea of ​​"product reliability is designed, produced and managed" has become more and more understood and accepted by designers and managers. According to statistics, 80% of product reliability problems originate from the product design stage, and the R&D level directly affects the product reliability in the product use stage....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06F17/50
CPCG06F30/367G06Q10/04
Inventor 胡祥涛张祥祥魏一雄程五四李广田富君周红桥陈帝江陈兴玉张红旗
Owner CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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