A fault monitoring method based on multi-production unit variable cross-correlation decoupling strategy

A cross-correlation and fault monitoring technology, which is applied in the direction of instruments, complex mathematical operations, design optimization/simulation, etc., can solve the problems of violating the data-driven fault monitoring method, which is not desirable, and achieve the effect of excellent fault monitoring performance

Active Publication Date: 2021-09-21
NINGBO UNIV
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Problems solved by technology

This is not advisable in the actual process, and it also violates the idea of ​​data-driven fault monitoring method from the perspective of data

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  • A fault monitoring method based on multi-production unit variable cross-correlation decoupling strategy
  • A fault monitoring method based on multi-production unit variable cross-correlation decoupling strategy
  • A fault monitoring method based on multi-production unit variable cross-correlation decoupling strategy

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Embodiment Construction

[0053] The method of the present invention will be described in detail below in conjunction with the accompanying drawings and specific examples of implementation.

[0054] like figure 1 As shown, a fault monitoring method based on multi-unit variable cross-correlation decoupling strategy. The specific implementation process of the method of the present invention and its superiority over the traditional distributed PCA method will be described below in conjunction with an example of a specific industrial process.

[0055] The application object is from Tennessee-Eastman (TE) chemical process experiment, and the prototype is an actual process flow of Eastman chemical production workshop. like figure 2 As shown, the production flow of the TE process is relatively complex, including five main production units: reactor, condenser, separation tower, stripping tower, and compressor. The TE process has been widely used in fault monitoring research as a standard experimental platf...

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Abstract

The invention discloses a fault monitoring method based on a cross-correlation decoupling strategy of multi-production unit variables, which aims to consider the cross-relationship between different production units in an industrial object into the process of distributed modeling and monitoring from the perspective of data. So as to implement more reliable and effective distributed fault monitoring. Specifically, first, according to the attribution of the measurement variables of each production unit, all the measurement variables are divided into multiple variable sub-blocks; secondly, the regression model is used to mine the cross-correlation information between each variable sub-block and other variable sub-blocks ; Finally, modeling and fault monitoring are implemented using the cross-correlation decoupled errors. Compared with the traditional method, the method of the present invention uses the regression model to take into account the cross relationship between the variable sub-blocks of different production units, and monitors the errors that can reflect whether the cross correlation relationship between different production units changes. Superior fault monitoring performance.

Description

technical field [0001] The invention relates to a data-driven fault monitoring method, in particular to a fault monitoring method based on a multi-production unit variable cross-correlation decoupling strategy. Background technique [0002] Ensuring continuous and normal production status is of great significance for reducing production costs and ensuring production safety. The technical means usually adopted are nothing more than real-time monitoring of process operation status, so as to identify abnormal status of the system in a timely manner. In recent years, with the advancement of large-scale industrial and "big data" construction, a large amount of real-time data can be collected in the production process, but an accurate mechanism model cannot be established. bedding. In this field of research, multivariate statistical process monitoring has received the most research and attention. Among them, the Principal Component Analysis (PCA) algorithm should be the most mai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/27G06K9/62G06F17/18
CPCG06F17/18G06F30/20
Inventor 厉鑫浩童楚东俞海珍
Owner NINGBO UNIV
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