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Improved web break strategy using a new approach for steam pressure control in paper machines

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Author

Summary, in English

This paper presents a new strategy for steam pressure control during web breaks in the paper machine. The aim was to restart paper production with the same drying properties of the cylinder as before the break. A detailed physical dynamic model of the drying cylinder has been developed. The accuracy of the model has been verified through experiments made at the M-real paper mill in Husum, Sweden. Verifications are made both during normal operation and during web breaks. The dynamic model has been reduced in order to derive simple transfer functions which were used to find the optimal steam pressure trajectory during web breaks. The resulting strategy has been tested on a paper machine with good results and it has been well received at the mill. (C) 2008 Elsevier Ltd. All rights reserved.

Publishing year

2008

Language

English

Pages

1151-1160

Publication/Series

Control Engineering Practice

Volume

16

Issue

10

Document type

Journal article

Publisher

Elsevier

Topic

  • Control Engineering

Keywords

  • physical modelling
  • paper machine
  • steam pressure control

Status

Published

Research group

  • LCCC

ISBN/ISSN/Other

  • ISSN: 0967-0661