Fault positioning method based on finite-state machine and graph neural network

A finite state machine and neural network technology, applied in the field of industrial process fault location, can solve problems such as difficult single point location, high complexity, and increased difficulty of fault location, so as to enhance interpretability, improve accuracy, and shorten maintenance the effect of time

Active Publication Date: 2020-11-20
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing technology, fault location often still relies on the experience of maintenance personnel, so that troubleshooting is significantly affected by differences in personal experience. Experienced maintenance personnel are in place for investigation in time, which furth

Method used

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  • Fault positioning method based on finite-state machine and graph neural network
  • Fault positioning method based on finite-state machine and graph neural network
  • Fault positioning method based on finite-state machine and graph neural network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0108] Model training is performed using the equipment maintenance manual containing the information shown in Table 1 as the data source:

[0109] Table 1 Schematic content of equipment maintenance manual

[0110]

[0111]

[0112] It can obtain a text dataset D containing multiple fault information source , each text in the text data set is segmented by Jieba word segmentation software, and stop words are removed to obtain dictionary set D cut-stopword .

[0113] via dictionary set D cut-stopword Train the CBOW model. The model parameters are set as: sliding window Windows=2, that is, two words are selected as the context words on the left and right of the center word; the model output word vector dimension=300, that is, each word can be represented by a 300-dimensional vector; the loss function is set for:

[0114]

[0115] where T is the length of the training text, 1≤i≤T; the parameters are updated using the gradient descent algorithm.

[0116] The text info...

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Abstract

The invention discloses a fault positioning method based on a finite-state machine and a graph neural network. The method comprises the steps that fault information is converted into graph structure data, reasoning is conducted on the graph structure data through a graph neural network model, conversion is achieved through a finite-state machine model, and the accuracy, reliability and timelinessof fault diagnosis in the industrial process can be remarkably improved.

Description

technical field [0001] The present invention relates to the technical field of industrial process fault location methods. Background technique [0002] In modern and contemporary industrial processes, data is complex and there are many factors affecting process stability. In order to ensure safe and stable production, faults that occur require more precise positioning. However, in the prior art, fault location often still relies on the experience of maintenance personnel, so that fault troubleshooting is obviously affected by differences in personal experience. On the other hand, faults are sudden, and maintenance personnel often work shifts in a fluid manner, which is difficult to guarantee. Experienced maintenance personnel conduct timely investigations, which further increases the difficulty of fault location. In addition to the personnel factor, the occurrence of faults in modern and contemporary industries often has the characteristics of "multi-point correlation and m...

Claims

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Application Information

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IPC IPC(8): G05B23/02
CPCG05B23/0243G05B2219/24065Y04S10/52
Inventor 程良伦王德培张伟文
Owner GUANGDONG UNIV OF TECH
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