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Reducing Moisture Transients in the Paper-Machine Drying Section with the Mid-ranging Control Technique

Karlsson, Magnus LU ; Slätteke, Ola LU ; Wittenmark, Björn LU and Stenström, Stig LU (2005) In Nordic Pulp & Paper Research Journal 20(2). p.150-155
Abstract
A new control strategy using feedback control has been developed for the multi-cylinder paper dryer configuration to reduce moisture transients in the drying section. The air system in the blow boxes was used to control the fast moisture transients in the paper machine. The new control system was combined with a previously developed physical model and was then compared with a conventional moisture control system. The comparison concerned the ability to restore the moisture ratio for two different dynamic changes, a moisture disturbance and a paper grade change. By combining the conventional steam control loop with an air loop, it was possible to significantly decrease the transient of the moisture disturbance.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Nordic Pulp & Paper Research Journal
volume
20
issue
2
pages
150 - 155
publisher
Arbor Publishing AB
external identifiers
  • wos:000230271800003
  • scopus:20744435149
ISSN
0283-2631
language
English
LU publication?
yes
id
117cb201-80d2-4400-871b-21f963390881 (old id 160730)
date added to LUP
2007-06-25 12:38:23
date last changed
2017-01-01 07:07:04
@article{117cb201-80d2-4400-871b-21f963390881,
  abstract     = {A new control strategy using feedback control has been developed for the multi-cylinder paper dryer configuration to reduce moisture transients in the drying section. The air system in the blow boxes was used to control the fast moisture transients in the paper machine. The new control system was combined with a previously developed physical model and was then compared with a conventional moisture control system. The comparison concerned the ability to restore the moisture ratio for two different dynamic changes, a moisture disturbance and a paper grade change. By combining the conventional steam control loop with an air loop, it was possible to significantly decrease the transient of the moisture disturbance.},
  author       = {Karlsson, Magnus and Slätteke, Ola and Wittenmark, Björn and Stenström, Stig},
  issn         = {0283-2631},
  language     = {eng},
  number       = {2},
  pages        = {150--155},
  publisher    = {Arbor Publishing AB},
  series       = {Nordic Pulp & Paper Research Journal},
  title        = {Reducing Moisture Transients in the Paper-Machine Drying Section with the Mid-ranging Control Technique},
  volume       = {20},
  year         = {2005},
}