Multi-phase LSTM-AE fault monitoring of batch processes based on diffusion distance and entropy FCM

被引:0
|
作者
Gao X.-J. [1 ,2 ,3 ,4 ]
Li X.-F. [1 ,2 ,3 ,4 ]
Qi Y.-S. [5 ]
机构
[1] Faculty of Information Technology, Beijing University of Technology, Beijing
[2] Engineering Research Center of Digital Community, Ministry of Education, Beijing
[3] Beijing Laboratory for Urban Mass Transit, Beijing
[4] Beijing Laboratory of Computational Intelligence and Intelligent System, Beijing
[5] School of Electric Power, Inner Mongolia University of Technology, Hohhot
关键词
batch process; diffusion distance; fault monitoring; nonlinearity; phase division;
D O I
10.3969/j.issn.1003-9015.2023.01.015
中图分类号
学科分类号
摘要
To solve the problem of low fault monitoring accuracy in batch process due to ignoring the nonlinearity of data in phase division, a fault monitoring method for multi-stage LSTM-autoencoder of batch process based on diffusion distance and entropy fuzzy C-means was proposed. Firstly, the information entropy was used to describe the two-dimensional time slice matrix after batch processing for identifying the number of clusters automatically. Then the fuzzy C-means clustering (FCM) was improved by diffusion distance to solve the problem that Euclidean distance could not represent the data nonlinearity, and effectively divided the stable phases of batch process and the transition phases by silhouette coefficient. Finally, a multi - phase LSTM-AE monitoring model was established. The proposed method was verified by using penicillin fermentation data and E. coli production of interleukin-2. The results showed that the proposed method not only improved the performance of phase division, but also could monitor faults more accurately. © 2023 Zhejiang University. All rights reserved.
引用
收藏
页码:120 / 130
页数:10
相关论文
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