Design method of Weibull-type product reliability acceptance scheme based on expert information

Abstract

This application relates to a Weibull type product reliability acceptance scheme design method based on expert information. The method includes: obtaining the expert information of the Weibull type product to be accepted, determining the nonlinear programming model through the maximum entropy method, thereby determining the distribution parameter; determining the parameter distribution formula of the Weibull type product according to the distribution parameter, through The algorithm obtains the probability that the product life is greater than the upper limit of the inspection, the probability that the product life is less than the lower limit of the inspection, and the probability of a given number of faulty products in the timed censored acceptance test. Combined with the parameter distribution formula to determine the risk of the producer and the risk of the user, according to the production Party risk and user risk determine the acceptance package of the product. The invention effectively utilizes expert information, and can significantly reduce two types of risk values ​​and shorten test time when the amount of test samples that can be input is small.

Description

technical field [0001] This application relates to the technical field of reliability testing, in particular to a Weibull-type product reliability acceptance scheme design method based on expert information. Background technique [0002] Reliability Acceptance Test (RAT) is a test to check whether the reliability of the product reaches the required level. According to the results of the reliability verification test, a conclusion of accepting or rejecting the tested products can be made. The verification test is mainly based on the results of the following hypothesis tests to make judgments: [0003] [0004] in, is the parameter acceptable value for , and is the parameter rejection value. If it is judged to be acceptable based on the test results , then accept the batch of products; if the judgment is accepted , the batch is rejected. During the inspection process, when established and accepted , such errors are called Type 1 errors; when established...

AI Technical Summary

Problems solved by technology

However, in actual operation, due to the limitation of funding costs, the amount of test samples that can be invested is often small, and traditional test methods have limitations in solving the problem of small samples

The acceptance test plan currently in use is proposed in GJB899A, but because only the system-level test data is used to carry out the test, the test time is too long, or the two types of risks in the short-term test plan are relatively high, and there are low efficiency, poor practicality

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