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Curl estimation in multi-ply paperboard
KTH, School of Engineering Sciences (SCI), Mathematics (Dept.), Optimization and Systems Theory.
2005 (English)In: Pract. Papermaking Conf., 2005, 733-754 p.Conference paper (Refereed)
Abstract [en]

This paper describes a grey box model for the curl and twist of the carton board produced at AssiDomän Frövi, 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. 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.

Place, publisher, year, edition, pages
2005. 733-754 p.
, 2005 TAPPI Practical Papermaking Conference
Keyword [en]
Elasticity, Kalman filtering, Laminating, Curl estimation, Multi-ply paperboards, Paperboards, Lamination, Paper Boards
National Category
Paper, Pulp and Fiber Technology
URN: urn:nbn:se:kth:diva-156516ScopusID: 2-s2.0-32044443828ISBN: 1595100946OAI: diva2:767329
2005 TAPPI Practical Papermaking Conference, 22-26 May 2005, Milwaukee, WI, USA

QC 20141201

Available from: 2014-12-01 Created: 2014-11-28 Last updated: 2014-12-01Bibliographically approved

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Bortolin, Gianantonio
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