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Mechanical system reliability distribution method

A distribution method and technology of mechanical systems, applied in manufacturing computing systems, data processing applications, complex mathematical operations, etc., can solve problems such as uncertainty in expert scoring, complexity of influencing factors, lack of data information, etc., to reduce subjectivity and Uncertainty, complexity reduction, methodologically sound effects

Pending Publication Date: 2022-08-05
RES INST OF PHYSICAL & CHEM ENG OF NUCLEAR IND
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AI Technical Summary

Problems solved by technology

[0002] The expert scoring assignment method is a common reliability assignment method. Due to the lack of data information in the early stage of mechanical system development, the complexity of influencing factors and the uncertainty of expert scoring, the results obtained by conventional data processing methods are not ideal.

Method used

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  • Mechanical system reliability distribution method
  • Mechanical system reliability distribution method

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Embodiment 1

[0069] The present invention will be described in further detail below by taking a mechanical system as an example. A mechanical product is composed of a main body, a left support system, a right support system, a damping system, a power device, and a protection device. The reliability model is a series model. The above components were evaluated from four aspects: complexity, technical difficulty, importance and environmental conditions.

[0070] Taking the main body as an example to introduce the calculation process, including the following steps:

[0071] (I) Five experts scored the main components, as shown in Table 3.

[0072] Table 3 Experts' scoring data on subjects

[0073]

[0074] Then the subject's evaluation matrix is

[0075] (II) For the main components, the statistics of the "complexity" of the influencing factors belonging to each gray category are:

[0076] j=1:

[0077] j=2:

[0078] j=3:

[0079] j=4:

[0080] Then the total grey statistic...

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Abstract

The invention discloses a mechanical system reliability distribution method, which comprises the following steps of: (1) scoring influence factors by experts, and establishing an evaluation influence factor set; (2) calculating a gray evaluation matrix of the component by using a gray evaluation method; (3) establishing an influence factor comprehensive weight set by using a grey correlation analysis method; and (IV) calculating reliability index distribution. According to the method, expert scoring data is summarized into an exact evaluation value by using a grey evaluation method, and the weights of influence factors are corrected by using a grey correlation analysis method, so that relatively strong subjectivity and uncertainty brought by an expert scoring distribution method are reduced, and the accuracy of data processing is improved. The method is reasonable and effective, the subjectivity of an expert score distribution method and the complexity of influence factors can be effectively reduced by using the method, and a reliability distribution result of the mechanical system at the initial stage of development is given.

Description

technical field [0001] The invention belongs to the technical field of reliability, and in particular relates to a reliability distribution method of a mechanical system. Background technique [0002] The expert scoring assignment method is a common reliability assignment method. Due to the lack of data information, the complexity of influencing factors and the uncertainty of expert scoring in the early stage of development of mechanical systems, the results obtained by conventional data processing methods are not ideal. SUMMARY OF THE INVENTION [0003] The present invention is proposed to overcome the disadvantages existing in the prior art, and its purpose is to provide a reliability distribution method for a mechanical system. [0004] The present invention is achieved through the following technical solutions: [0005] A reliability distribution method for a mechanical system, comprising the following steps: [0006] (I) Experts will score the influencing factors an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06F17/18
CPCG06Q10/06393G06F17/18Y02P90/30
Inventor 钱毅江超李楠苏荔裴家成
Owner RES INST OF PHYSICAL & CHEM ENG OF NUCLEAR IND
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