Degradation parameter identification method, device, and product performance evaluation method and system

Abstract

The invention discloses a method for identifying product degradation parameters, a module and a product performance evaluation method, and a system. The method comprises the following steps: S1, Determining all target performace parameters of possible degradation in the performance parameters of the target object;S2, respectively obtain a plurality of data values of each target performance parameter of that product in a specified time period to form a parameter sequence corresponding to each target performance parameter; S3, judging whether the corresponding target performance parameter is a degradation parameter according to the stationarity of each parameter sequence; the evaluation method evaluates the performance according to the degradation parameters identified by the product. The identification device comprises a parameter determination module, a parameter sequence acquisition module and a degradation parameter determination module. The evaluation system comprises a degradationparameter identification device and a performance evaluation device. The invention has the advantages of simple realization method, quantitative identification of product degradation parameters, highidentification efficiency, high precision and high evaluation precision.

Description

technical field [0001] The invention relates to the technical fields of product reliability analysis and performance evaluation, in particular to a product degradation parameter identification method and device, and a product performance evaluation method and system. Background technique [0002] The degradation process is a physical or chemical process in which the performance of the product changes. During the working or storage process of the product, various properties will gradually decline or rise slowly with time, until it reaches a state that cannot work normally, that is, performance degradation occurs , such as the decline of electrical properties of components, wear of mechanical components, material aging or corrosion, fatigue crack growth, etc., with the gradual development of degradation, it will eventually lead to product failure. Degradation parameters are performance parameters that are in the process of degradation and have a degradation tendency. [0003]...

AI Technical Summary

Problems solved by technology

The degradation parameters of products are usually determined directly based on manual experience or qualitative trend analysis. There is no quantitative degradation parameter identification method; however, the degradation parameters are determined by manual experience and non-quantitative analysis. On the one hand, The accuracy is low and the degree of error is high, and it is easy to miss the parameters whose degradation trend is not obvious, making subsequent analysis and evaluation impossible; Inaccurate assessment

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