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Symbolic multi-quality characteristic analysis method based on relative entropy and gray relational degree

A technology of multi-quality characteristics and gray relational degree, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of lack of multi-quality characteristics process prediction and modeling

Inactive Publication Date: 2018-09-04
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0006] The purpose of the present invention is to solve the problem of lack of prediction and modeling of multi-quality characteristic process in the prior art, and propose a symbolic multi-quality characteristic analysis method based on relative entropy and gray correlation degree

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  • Symbolic multi-quality characteristic analysis method based on relative entropy and gray relational degree
  • Symbolic multi-quality characteristic analysis method based on relative entropy and gray relational degree
  • Symbolic multi-quality characteristic analysis method based on relative entropy and gray relational degree

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Embodiment Construction

[0041] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0042] The invention provides a symbolic multi-quality characteristic analysis method based on relative entropy and gray relational degree, such as figure 1 shown, including the following steps:

[0043] S1. Analyze the service conditions and functional structure of the system, study the failure mechanism, failure mode and system quality influencing factors of the system, obtain the unique attributes of the system, and make reasonable assumptions for the correlation research of the system's multiple quality characteristics; extract the system quality characteristics, Determine the multi-quality characteristic research system. Select each quality characteristic to be studied, collect quality characteristic data, and form various quality characteristic data time series.

[0044]In the embodiment of the present invention, a certain heavy-duty CNC machine ...

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Abstract

The invention discloses a symbolic multi-quality characteristic analysis method based on relative entropy and gray correlation degree. Starting from the system function structure, failure mode and influencing factors, the system quality characteristic is extracted, the multi-quality characteristic research system is determined, and the quality of each system is collected. Characteristic data sequence. The equal probability symbolization method is used to symbolize the data sequences of each quality characteristic of the system to obtain the corresponding symbolic sequence space; the probability distribution characteristics of each quality characteristic sequence are studied, and the statistical histogram of the symbol sequence frequency is obtained. Considering the problems of correlation and uncertainty among the various quality characteristics of the system in actual engineering, using the symbolic dynamics relative entropy and gray correlation analysis methods, the quality characteristics of the symbolic sequences are analyzed from the perspectives of difference and similarity, respectively. Quantitative characterization of the coupling correlation; finally realized the expression of the serial correlation and uncertainty of the original quality characteristic data.

Description

technical field [0001] The invention belongs to the technical field of system reliability analysis and life evaluation, and specifically relates to the design of a symbolic multi-quality characteristic analysis method based on relative entropy and gray relational degree. Background technique [0002] Complex mechanical and electrical products are complex systems that are organically combined with mechanical structures, electrical equipment, control devices, and detection devices. Specifically, complex electromechanical products are complex systems with overall functions integrated by multi-unit technologies such as mechanics, electricity, and hydraulics. A class of complex products. The quality characteristics of complex electromechanical products cover a wide range, including not only general characteristics such as reliability, usability, and precision, but also characteristics such as accuracy retention and appearance. Generally speaking, various quality characteristics...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 李彦锋米金华彭卫文朱顺鹏孟德彪李贺黄洪钟
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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