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

Ekvall, Jenny and Hägglund, Tore LU (2008) In Control Engineering Practice 16(10). p.1151-1160
Abstract
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... (More)
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. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
physical modelling, paper machine, steam pressure control
in
Control Engineering Practice
volume
16
issue
10
pages
1151 - 1160
publisher
Elsevier
external identifiers
  • wos:000258216000001
  • scopus:46149090831
ISSN
0967-0661
DOI
10.1016/j.conengprac.2007.11.008
language
English
LU publication?
yes
id
17546a84-c674-47d0-820c-6c6bd9d6e494 (old id 1253488)
date added to LUP
2008-11-14 14:46:35
date last changed
2017-01-01 04:21:44
@article{17546a84-c674-47d0-820c-6c6bd9d6e494,
  abstract     = {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.},
  author       = {Ekvall, Jenny and Hägglund, Tore},
  issn         = {0967-0661},
  keyword      = {physical modelling,paper machine,steam pressure control},
  language     = {eng},
  number       = {10},
  pages        = {1151--1160},
  publisher    = {Elsevier},
  series       = {Control Engineering Practice},
  title        = {Improved web break strategy using a new approach for steam pressure control in paper machines},
  url          = {http://dx.doi.org/10.1016/j.conengprac.2007.11.008},
  volume       = {16},
  year         = {2008},
}