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On modelling of curl in multi-ply paperboard
KTH, School of Engineering Sciences (SCI), Mathematics (Dept.), Optimization and Systems Theory.
2006 (English)In: Journal of Process Control, ISSN 0959-1524, E-ISSN 1873-2771, Vol. 16, no 4, 419-429 p.Article in journal (Refereed) Published
Abstract [en]

This paper describes a grey-box model for the curl and twist of the carton board produced at AssiDoman Frovi, Sweden. The main equations are based on classical lamination theory of composite materials, and each constituent ply is considered as a macroscopic homogeneous, elastic medium. The model used data from June to September 2004, and shows a general agreement between predicted and measured curvatures. The data were cleaned from outliers by means of the Hampel filter, a nonlinear moving window filter, and with a model based method. Regularization and backwards elimination were used to cope with the low identifiability of the problem. The model was then complemented with a sub-model of immeasurable/unmodelled disturbances estimated with an extended Kalman filter. (C) 2005 Elsevier Ltd. All rights reserved.

Place, publisher, year, edition, pages
2006. Vol. 16, no 4, 419-429 p.
Keyword [en]
grey-box modelling, outliers, variable selection
National Category
Robotics
Identifiers
URN: urn:nbn:se:kth:diva-47132DOI: 10.1016/j.jprocont.2005.04.012ISI: 000235765900010Scopus ID: 2-s2.0-29144463351OAI: oai:DiVA.org:kth-47132DiVA: diva2:454693
Note
QC 20111108Available from: 2011-11-08 Created: 2011-11-07 Last updated: 2017-12-08Bibliographically approved

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