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Method for updating electronic product reliability prediction model complying with exponential distribution

An electronic product, exponential distribution technology, applied in the direction of calculation, electrical digital data processing, special data processing application, etc., can solve the problem of not reflecting the actual working conditions of the product, not meeting the production and application, not considering the humidity stress error, etc.

Active Publication Date: 2013-03-13
苏州航大科创发展有限公司
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Problems solved by technology

However, traditional reliability prediction methods often cannot reflect the actual situation of product work, nor can they meet the needs of production and application.
In addition, the traditional reliability prediction method has a large error because it does not consider the humidity stress

Method used

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  • Method for updating electronic product reliability prediction model complying with exponential distribution
  • Method for updating electronic product reliability prediction model complying with exponential distribution
  • Method for updating electronic product reliability prediction model complying with exponential distribution

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Embodiment Construction

[0042] A kind of electronic product reliability prediction model revision method subject to exponential distribution of the present invention see Figure 4 As shown, the steps are as follows:

[0043] Step 1, analyze the use area of ​​the product and divide it by province, municipality and autonomous region;

[0044] Step 2, collect the meteorological information of each province, municipality directly under the Central Government, and autonomous region over the years, and calculate the annual average value of temperature stress and humidity stress in each region, see figure 1 As shown, the detailed steps are as follows:

[0045] Step 201, collect and use the weather information of each province, municipality directly under the central government, and autonomous region in the past years.

[0046] Step 202, using the annual and monthly average temperature and humidity of each province, municipality, and autonomous region to calculate the annual average value of temperature st...

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Abstract

The invention provides a method for updating an electronic product reliability prediction model complying with exponential distribution, which comprises the following steps of: 1, analyzing a use region of products; 2, acquiring calendar year meteorological information of each province and city in the use region, and calculating a year average value of temperature stress and humidity stress in each region; 3, respectively constructing a temperature and humidity probability density distribution function, and solving a year average value of temperature stress and humidity stress in the use region; 4, analyzing each stress borne in a product use process; 5, selecting a reliability prediction manual, and calculating an element work failure rate according to a stress analysis model; 6, drawing a product mission reliability block diagram and compressively calculating a product work failure rate; 7, carrying out an acceleration life test and recording test data; 8, product mean life to failure under a test condition and work failure rate under a normal work condition; and 9, comparing product work failure rates obtained by reliability prediction and the accelerated life test, calculating errors generated by the humidity stress, and offering a reliability prediction correction model.

Description

Technical field [0001] The invention relates to a method for correcting a reliability prediction model of an electronic product, in particular to a method for correcting a reliability prediction model of an electronic product subject to exponential distribution, and belongs to the technical field of system engineering system reliability. Background technique [0002] In recent years, my country's electronic products have developed rapidly. But on the whole, there is still a certain gap between the technical content and reliability of domestic electronic products and similar advanced products abroad. The reliability of electronic products is determined by the quality of work in various stages such as design and development, manufacturing, testing and inspection, and use and maintenance. In order to improve the reliability of electronic products, it is necessary to grasp all relevant links such as design, production, and management, and master key reliability technologies suc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 胡薇薇丁潇雪孙宇锋祁邦彦
Owner 苏州航大科创发展有限公司
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