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

A technology of degradation parameters and identification methods, applied in design optimization/simulation, electrical digital data processing, special data processing applications, etc., can solve problems such as missing degradation trend parameters, loss of product degradation information, and inability to analyze and evaluate, etc., to achieve easy Realize the effect of data analysis, identification efficiency and high precision, and efficient degradation parameter identification

Pending Publication Date: 2019-01-04
CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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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

Method used

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

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Embodiment 1

[0048] Such as figure 1 As shown, the steps of the product degradation parameter identification method in this embodiment include:

[0049] S1. Parameter determination: determine all the target performance parameters that may have a degradation trend among the performance parameters of the target product;

[0050] S2. Acquisition of parameter sequence: obtain multiple data of each target performance parameter of the product within a specified time period respectively, and form a parameter sequence corresponding to each target performance parameter;

[0051] S3. Degradation parameter identification: According to the stationarity of each parameter sequence, determine whether the corresponding target performance parameter is a degeneration parameter.

[0052] This embodiment first analyzes the data change characteristics during the degradation process of product performance parameters. When the performance parameters of the product are in the non-degeneration period, that is, wh...

Embodiment 2

[0095] This embodiment uses the method of the present invention to realize the identification of product degradation parameters in a specific embodiment. Such as Figure 5 As shown, in this embodiment, all target performance parameters that may have a degradation trend among the product performance parameters are firstly determined through principle analysis, and by obtaining the parameter sequence of each target performance parameter, for the parameters that can be clearly identified, the stationarity characteristics and changes of the sequence The trend preliminarily determines whether the parameter sequence is stable; for parameters that cannot be clearly identified, the unit root test is further carried out, and the test p value is used to judge whether the performance parameter sequence is stable; according to the results of the stationarity test, it is judged whether it is a degraded parameter with a degradation trend, and the completion Quantitative identification of de...

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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]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F2119/04G06F30/20
Inventor 匡芬汪旭潘宇雄陈旭鸿杜绍华尹超唐欢
Owner CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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