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Discrete modeling method of accelerated degradation data based on grey system theory

A gray system theory and accelerated degradation technology, applied in the field of accelerated degradation data modeling, can solve problems such as product performance degradation and failure

Inactive Publication Date: 2017-01-18
SOUTH CHINA UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The functions completed by the product are characterized by its performance parameters, and the impact of the dynamic environment on the product is also reflected in the changes in the performance parameters. In many cases, there is an inevitable relationship between product failure and performance degradation, and product performance degradation can lead to failure

Method used

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  • Discrete modeling method of accelerated degradation data based on grey system theory
  • Discrete modeling method of accelerated degradation data based on grey system theory
  • Discrete modeling method of accelerated degradation data based on grey system theory

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Experimental program
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Embodiment

[0076] The specific embodiment of the present invention selects an application case of an accelerated degradation test of a certain inertial navigation component in a certain type of weaponry, and illustrates the effectiveness and accuracy of the method of the present invention in modeling the original data in the accelerated degradation test.

[0077]In order to test the storage life of a certain inertial navigation component, an accelerated degradation test was designed and carried out. 1 =70°C, S 2 =80°C, S 3 = Select samples at 90°C to carry out temperature stress accelerated degradation test, the test time is equal interval test, record a test data every 50h.

[0078]

[0079] Table 1

[0080] Table 1 shows the inertial navigation components at each acceleration stress S 1 = When the accelerated test is carried out at 70°C, the performance parameter X 1 and x 2 The test data sequence obtained by monitoring separately: X 1 (0) and x 2 (0) . Among them, the per...

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Abstract

The invention discloses a discrete modeling method of accelerated degradation data based on a grey system theory. The method comprises the following steps: 1, carrying out timing inequality treatment; 2, carrying out a class ratio test and data transformation; 3, generating a grey sequence; 4, carrying out grey comprehensive relational grade analysis; 5, establishing a discrete grey model. The technical point of the invention is that simplified comprehensive relational grade analysis is carried out on original data of accelerated degradation based on the discrete modeling method in the grey system theory, so that a discrete grey-scale model is established. According to the invention, a universal modeling method which considers similarities of absolute positions among the data, further considers similarities of change rates, and provides a discrete form to original experiment data of various accelerated degradation tests containing key degradation information is established. The discrete modeling method of the accelerated degradation data based on the grey system theory disclosed by the invention has the advantages that the obtained model takes the data as a basis, thereby being more close to actual engineering requirements to provide a foundation and basis for further product reliability analysis and life prediction.

Description

technical field [0001] The invention belongs to the technical field of accelerated degradation data modeling, and specifically relates to a discrete modeling method for accelerated degradation data based on gray system theory. And gray system theory modeling. The invention provides a general modeling method in discrete form for the original test data of various accelerated degradation tests containing key degradation information, and provides a basis for further using the degradation data model to analyze and evaluate the degradation process of product functions. Background technique [0002] The functions completed by the product are characterized by its performance parameters, and the impact of the dynamic environment on the product is also reflected in the changes in the performance parameters. In many cases, there is an inevitable relationship between product failure and performance degradation, and product performance degradation can lead to failure . The traditional ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 高军黄道平
Owner SOUTH CHINA UNIV OF TECH
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