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Comprehensive reliability evaluation method based on multi-test information

A comprehensive evaluation and reliability technology, applied in special data processing applications, instruments, electrical and digital data processing, etc., can solve the problems of difficult to obtain the life of the environmental factor and difficult to carry out reliability evaluation, and simplify the determination of the environmental factor. process, easy to apply effects

Inactive Publication Date: 2012-11-21
BEIHANG UNIV
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  • Description
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems that the environmental conversion factor is difficult to obtain the service life and the reliability evaluation work is difficult to carry out when there is a lack of samples and data, and proposes a reliability comprehensive evaluation method based on multi-test information. It is also possible to obtain environmental conversion factor values ​​under certain conditions, and to integrate the life of different test information and conduct reliability evaluation

Method used

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  • Comprehensive reliability evaluation method based on multi-test information

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Embodiment

[0062] It is known that a sample of an electromechanical product has undergone a 1000-hour life test and a 200-hour environmental test. In the absence of other test data, it is hoped to evaluate its mean time between failures. Since no corresponding reliability test has been carried out on the product, and the sample is only one product, it is difficult to evaluate it by conventional methods, so the method described in the present invention is used for evaluation.

[0063] Step 1. Establish a product reliability model

[0064] Analyze the structure and function of the product, and establish a reliability block diagram of the product based on the principle, function and functional process of the product. After the analysis of the product, the product is composed of two parts, namely the mechanical part and the electronic part, and the relationship between the reliability of these two parts obeys the series model. Its reliability block diagram is as follows Figure 4 shown.

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Abstract

The invention discloses a comprehensive reliability evaluation method based on multi-test information. The method comprises the following specific steps of: 1, establishing a reliability model of a product; 2, estimating the failure rates of the product under different environments; 3, determining environment reduced factors; 4, performing time reducing and 5, evaluating the service life and reliability of the product. According to the method disclosed by the invention, multi-test information can be integrated, so that the service life and reliability of the product can be evaluated; under the condition that product samples and data are rare, the environment reduced factors under different conditions can be determined, and the evaluation on the service life and reliability of the product can be finished; and the invention provides a method for determining environment reduced factors by utilizing a product reliability estimation result, so that the process of determining the environment reduced factors is simplified, and the method disclosed by the invention can be applied more simply and conveniently.

Description

technical field [0001] The invention is a reliability comprehensive evaluation method based on multi-test information, which belongs to the technical field of life and reliability evaluation. Background technique [0002] For some products, especially long-life and high-reliability products, due to the limitations of the development cycle and funds, sufficient data cannot be obtained for their life or reliability tests; sometimes due to conditions, it is impossible to carry out The corresponding life and reliability tests lead to the inability to evaluate its actual reliability or life in the process of evaluating its life and reliability. At the same time, due to the limitations of samples and funds, some products in the development stage, in addition to the life or reliability tests of the above-mentioned products, usually have experienced multiple tests such as performance tests and environmental tests, which have also caused problems for the life of the products. There ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 王晓红王立志许小靓姜同敏
Owner BEIHANG UNIV
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