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Single equipment reliability correction method based on batch equipment reliability evaluation

A reliability and equipment technology, applied in computer-aided design, design optimization/simulation, special data processing applications, etc., can solve problems such as reliability impact, and achieve the best social effect

Pending Publication Date: 2021-09-03
中国人民解放军火箭军工程大学
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The result obtained in this way is the reliability of the entire batch of equipment. In fact, the difference in the service history of a single equipment, such as working hours in different environments and use of different intensities, will affect its reliability.

Method used

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  • Single equipment reliability correction method based on batch equipment reliability evaluation
  • Single equipment reliability correction method based on batch equipment reliability evaluation
  • Single equipment reliability correction method based on batch equipment reliability evaluation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0042] Embodiment: Select three correction factors of working environment factor, performance test factor and start-up time factor to correct the reliability of a single device;

[0043] (1) Working environment factors

[0044] The working environment factor refers to the degree to which the reliability of the equipment during service is affected by the working time and the environment, which is denoted as F 1 ;Different regions, different working temperature, humidity, etc. have a greater impact on individual equipment; the conversion factors of equipment affected by environmental factors are shown in Table 1;

[0045] Table 1 Value table of environmental factors

[0046]

[0047] f 1 The calculation steps are as follows:

[0048] The first step is to calculate the working time and environmental equivalent value of a single device, F i '; Let a single device experience different time t in different working environments j (j=1,2,…,7), the working time of a single devic...

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Abstract

The invention discloses a single equipment reliability correction method based on batch equipment reliability evaluation. Three correction factors including a working environment factor, a performance test factor and a startup time factor are selected to correct the reliability of single equipment, wherein the working environment factor refers to the change degree of the reliability of the equipment in service affected by the working environment and is recorded as F1, the performance test factor refers to a correction relation of each test parameter to the reliability during the service period of the equipment; during the in-service period of the equipment, the use intensity and the test inspection frequency of single equipment are different, so that the reliability difference of the single equipment is influenced, and the performance test factor is marked as F2, the startup time correction factor refers to an influence correction relation of the startup time of the equipment on the reliability; the length of the independent startup time of a single device has direct influence on the reliability state of the device, and the influence is recorded as F3; the reliability Rd of the single equipment can be obtained through calculation by combining the reliability R of the batch equipment obtained through evaluation, and the calculation formula is shown in the specification.

Description

technical field [0001] The invention belongs to the technical field of equipment reliability, and in particular relates to a single equipment reliability correction method based on batch equipment reliability evaluation. Background technique [0002] For important equipment that has been in service for a long time in aviation, electric power, nuclear energy, transportation and other industries, in order to ensure that the equipment can complete the specified tasks safely and reliably, and give full play to the functions and effectiveness of the equipment, it is necessary to conduct reliability evaluation. Generally, it is carried out through statistical analysis of fault data during equipment service. However, the number of single equipment failures is limited. In order to estimate reliability more accurately, batch equipment with consistent structure, function, and technical state configuration is usually selected as a sample for statistical analysis of failures. The resul...

Claims

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Application Information

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IPC IPC(8): G06F30/20G06F119/02G06F119/12
CPCG06F30/20G06F2119/02G06F2119/12
Inventor 刘小方周立尧周永涛郑祥
Owner 中国人民解放军火箭军工程大学
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