Control Systems for Strip Rolling Mills

The paper considers the need for control systems in the hot and cold rolling of steel strip. It is not intended for steel specialists, but is a broad case study designed to illustrate two important points of general interest to control engineers. (i) Every control loop is present in order to correct...

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Main Author: J. R. Leigh
Format: Article
Language:English
Published: SAGE Publishing 1977-11-01
Series:Measurement + Control
Online Access:https://doi.org/10.1177/002029407701001102
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author J. R. Leigh
author_facet J. R. Leigh
author_sort J. R. Leigh
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description The paper considers the need for control systems in the hot and cold rolling of steel strip. It is not intended for steel specialists, but is a broad case study designed to illustrate two important points of general interest to control engineers. (i) Every control loop is present in order to correct for some deviation from ideal behaviour in the plant or the plant inputs. This is a useful and systematic initial approach to the problem of designing the overall control system configuration for a particular process. (ii) The need for each type of control implied in (i) can be minimised or eliminated by proper design of the plant or by proper choice of operational procedures. This is a quite general statement and it leads to the view: Control systems engineers should be involved in the planning and design of new plant, so that an economically wise choice can be made between expenditure on improved design and expenditure on improved control. Three units of plant, which together constitute a closely linked production complex, are considered together and an analysis made of their potential for improvement by the application of control systems. Possible economic benefits are first listed and then reasons for deviation from ideal behaviour are discussed. Each deviation from ideal behaviour can be corrected either by changes in plant design or operation or by the application of improved control. An outline is given of the types of control system required to correct deviations in this configuration. In particular, the problem of control of strip flatness is discussed since this is the most innovative part of the work.
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spelling doaj.art-624eac7023e241b9b7668518b785cd8e2022-12-22T02:36:28ZengSAGE PublishingMeasurement + Control0020-29401977-11-011010.1177/002029407701001102Control Systems for Strip Rolling MillsJ. R. Leigh0 The Polytechnic of Central LondonThe paper considers the need for control systems in the hot and cold rolling of steel strip. It is not intended for steel specialists, but is a broad case study designed to illustrate two important points of general interest to control engineers. (i) Every control loop is present in order to correct for some deviation from ideal behaviour in the plant or the plant inputs. This is a useful and systematic initial approach to the problem of designing the overall control system configuration for a particular process. (ii) The need for each type of control implied in (i) can be minimised or eliminated by proper design of the plant or by proper choice of operational procedures. This is a quite general statement and it leads to the view: Control systems engineers should be involved in the planning and design of new plant, so that an economically wise choice can be made between expenditure on improved design and expenditure on improved control. Three units of plant, which together constitute a closely linked production complex, are considered together and an analysis made of their potential for improvement by the application of control systems. Possible economic benefits are first listed and then reasons for deviation from ideal behaviour are discussed. Each deviation from ideal behaviour can be corrected either by changes in plant design or operation or by the application of improved control. An outline is given of the types of control system required to correct deviations in this configuration. In particular, the problem of control of strip flatness is discussed since this is the most innovative part of the work.https://doi.org/10.1177/002029407701001102
spellingShingle J. R. Leigh
Control Systems for Strip Rolling Mills
Measurement + Control
title Control Systems for Strip Rolling Mills
title_full Control Systems for Strip Rolling Mills
title_fullStr Control Systems for Strip Rolling Mills
title_full_unstemmed Control Systems for Strip Rolling Mills
title_short Control Systems for Strip Rolling Mills
title_sort control systems for strip rolling mills
url https://doi.org/10.1177/002029407701001102
work_keys_str_mv AT jrleigh controlsystemsforstriprollingmills