Prediction and screening method of relay individual working life based on early life performance

Abstract

The invention relates to a relay individual working life predicting and screening method based on early life performance. The relay individual working life predicting and screening method based on early life performance is characterized by comprising the following steps that under an environment temperature C1, the performance parameters C ={C2,C3, ...,Cn} and the working life D of a relay sample at the early life are acquired according to the service life test of the relay sample; a relay individual working service decision table is established based on a rough set theory and an equal probability criterion by using the C as condition attributes and using the D as decision attributes; a set of association rules with respect to the early life performance and the service life of relay individuals are extracted by the aid of attribute reduction; afterwards, for the individuals of the same specifications, the service life of the individuals can be predicted by only measuring the performance parameters of the individuals at the early life, and therefore relays can be screened. According to the method, when the working life of the relay individuals are predicted and products are screened, only the early life performance of the relay individuals is needed, no more information is needed, the time and cost for acquiring information are greatly saved, the calculation is small, and the effective service life of the relays can also not excessively shortened.

Description

technical field [0001] The invention belongs to the technical field of relays, in particular to a method for predicting and screening individual working life of relays based on early-life performance. Background technique [0002] Nowadays, relay products are widely used in various industries. Different industries, systems, and equipment have different requirements for their working life, so it is often necessary to use the working life as an indicator to screen relay products. In particular, when relays are used in some systems that require extremely high reliability and are difficult to repair once they are put into use, such as space stations, submarine engineering systems, artificial satellites, etc., each relay product is required to have a The longer working life of the system. In order to select individual products that meet this requirement, long-term and harsh screening tests have to be carried out, which not only requires high costs, but also reduces the remainin...

AI Technical Summary

Problems solved by technology

However, there is currently a lack of a method that can quickly judge whether the working life of an individual relay product can reach a given value without shortening the effective service time of the relay product too much.

[0004] Recent studies have found that the working life of an individual relay product is related to its performance parameters in the early stages of life. Individuals with ideal performance parameters in the early life have a longer working life, and vice versa.

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