On-line fiber orientation closed-loop control

Details On-line fiber orientation closed-loop control On-line fiber orientation closed-loop control

D - Textiles, Paper

21

G

D21G 9/00 (2006.01)

Patent

CA 2476688

A controller (30, 40) to provide base level fiber orientation control of a paper web. The controller (30, 40) achieves one or more indices that are derived from the online measurements of a fiber orientation sensor (24) of the fiber ratio and the fiber angle. The indices are used for control of the sheet forming processes. The controller (30, 40) may be implemented a single or multi stage fuzzy controller or the combination of fuzzy controllers with non- fuzzy logic controllers.

L'invention concerne un dispositif de commande (30, 40) permettant de commander l'orientation de fibre de niveau de base d'un voile de papier. Le dispositif de commande (30, 40) permet d'atteindre un ou plusieurs indices qui sont dérivés à partir des mesures en ligne d'un capteur (24) d'orientation de fibre du rapport de fibre et de l'angle de fibre. Les indices sont utilisés pour commander les procédés de formation de feuille. Le dispositif de commande (30, 40) peut être mis en oeuvre par le biais d'un dispositif de commande floue multi-étages ou mono-étage ou par le biais de la combinaison de dispositifs de commande floue par le biais de dispositifs de commande logique non floue.

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