Reliability index evaluation method of electronic control system of instrument

Abstract

The invention discloses a reliability index evaluation method of an electronic control system of an instrument. The method includes: carrying out field testing on an electronic complete machine, to which an electronic control system belongs, in a normal-temperature environment, and recording performance parameters after field testing; determining an acceleration factor of the electronic complete machine; calculating duration of laboratory testing of the electronic complete machine according to the acceleration factor and field testing duration of the electronic complete machine; carrying out laboratory testing on the electronic complete machine under high-temperature environmental stress, and recording performance parameters after laboratory testing; analyzing the performance parameters after field testing of the electronic complete machine and the performance parameters after laboratory testing, and calculating the number of testing failures and failure categories of the electronic complete machine; and determining reliability of the electronic control system according to the number of the testing failures and the failure categories of the electronic complete machine. Through themethod, a testing cycle can be shortened, product failures can also be accurately detected, better improvement of research and development personnel on electronic control systems of products is facilitated, and product quality is improved.

Description

technical field [0001] The invention relates to the technical field of reliability testing, in particular to a reliability index assessment method of an instrument electric control system. Background technique [0002] With the increasingly fierce market competition, there are more and more high-reliability and long-life products in the field of civilian household appliances. If conventional reliability and life test methods are used to evaluate product reliability and life characteristics, it often takes unbearable time and cost, and even before the test is completed, the product has been updated or eliminated due to backward performance. Obviously, such a long test time not only misses the best opportunity to improve product reliability, but also seriously affects the progress of research and development, which is unacceptable in engineering practice. Therefore, it is both necessary and important to use the accelerated life test method to evaluate the reliability, life an...

AI Technical Summary

Problems solved by technology

If the conventional reliability and life test methods are used to evaluate the reliability and life characteristics of the product, it often takes unbearable time and cost, and even before the test is completed, the product has been updated or eliminated due to backward performance

Obviously, such a long test time not only misses the best time to improve product reliability, but also seriously affects the progress of research and development, which is unacceptable in engineering practice

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