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The application of the Smith predictor with PSO in HAGC system

Xiaolan Yao (Department of Automatic Control, School of Information Science and Technology, Beijing Institute of Technology, Beijing, China)
Xiangtao Yu (Department of Automatic Control, School of Information Science and Technology, Beijing Institute of Technology, Beijing, China)
Qinghe Wu (Department of Automatic Control, School of Information Science and Technology, Beijing Institute of Technology, Beijing, China)
Qihong Liang (Department of Automatic Control, School of Information Science and Technology, Beijing Institute of Technology, Beijing, China)

Kybernetes

ISSN: 0368-492X

Publication date: 16 October 2009

Abstract

Purpose

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The purpose of this paper is to solve the problem of a pure time delay in the hydraulic automatic gauge control (HAGC) system.

Design/methodology/approach

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Smith predictor is selected to solve pure time delay of the HAGC system. The model of thickness predictor is identified by the extended recursive least square algorithm. The parameters of controller are adjusted by particle swarm optimization algorithm (PSO). The simulation result shows that the Smith predictor has good response performance and anti‐disturbances ability.

Findings

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The control precision of the HAGC system in the finished mill can be obviously improved by Smith predictor with PSO arithmetic. The Smith predictor with PSO arithmetic is suitable to solve the pure time delay in the HAGC system.

Research limitations/implications

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Randomicity in rolling process and the effect of other mill stands are the main limitations based on which the model will be applied.

Practical implications

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A very useful method to improve the precision of the strip.

Originality/value

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This paper presents a new method of Smith predictor with PSO arithmetic is designed for a HAGC system in the finished mill to solve a pure time delay problem. The object model is acquired by system identification method.

Keywords

Citation

Yao, X., Yu, X., Wu, Q. and Liang, Q. (2009), "The application of the Smith predictor with PSO in HAGC system", Kybernetes, Vol. 38 No. 10, pp. 1794-1800. https://doi.org/10.1108/03684920910994312

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Publisher

:

Emerald Group Publishing Limited

Copyright © 2009, Emerald Group Publishing Limited

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