Research on principal components extraction based robust extreme learning machine(PCE-RELM) and its application to modeling chemical processes

被引：0

作者：

Zhang X. ^{[1
,2
]}

Wang P. ^{[1
,2
]}

Gu X. ^{[1
,3
]}

Xu Y. ^{[1
,2
]}

He Y. ^{[1
,2
]}

Zhu Q. ^{[1
,2
]}

机构：

[1] College of Information Science and Technology, Beijing University of Chemical Technology, Beijing

[2] Engineering Research Center of Ministry of Education, Beijing

[3] Sinopec Engineering Group Co., Ltd., Beijing

来源：

Huagong Xuebao/CIESC Journal | 2019年 / 70卷 / 02期

关键词：

Chemical production; Extreme learning machine; Neural network; Principal components analysis; Process control; Processes modeling;

D O I：

10.11949/j.issn.0438-1157.20181355

中图分类号：

学科分类号：

摘要：

The chemical production processes are increasingly complex and the traditional extreme learning machine (ELM) cannot effectively model the chemical processes data. To tackle this problem, a novel PCE-RELM model based on principal components extraction (PCE) is proposed. Through principal component analysis of the ELM hidden layer, the principal component features of the data are extracted, the linear correlation between variables is removed, and the research problem is simplified. The influence of the number of hidden layer nodes on the accuracy of the model can be reduced, the number of hidden layer nodes in the ELM can be quickly and randomly selected, and the ELM model becomes robust. To verify the effectiveness of the proposed method, the PCE-RELM model was applied to modeling the purified terephthalic acid (PTA) production process. The simulation results show that, compared with the traditional ELM, the PCE-RELM model has the advantages of simple design, good robustness and high accuracy, which can guide the chemical process control and analysis. © All Right Reserved.

引用

页码：475 / 480

页数：5

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