A process for controlling torque in a calendering system

D - Textiles – Paper – 21 – G

Patent

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D21G 1/00 (2006.01)

Patent

CA 2655498

A method for controlling a calendering system having a first roll (12) having a first roll speed controller (24) and a second roll (14) having a second roll speed controller (30) is disclosed. An exemplary method comprises the steps of : (a) setting the first roll at a desired process speed with the first roll speed controller; (b) determining a target torque of the first roll; (c) contactingly engaging the first and second rolls; (d) determining an actual torque of the first roll; (e) comparing the target torque and the actual torque; and, (f) adjusting a speed of the second roll with the second roll speed controller to maintain the target torque of the first roll according to the comparison of the target torque and the actual torque.

Procédé de commande d'un système de calandrage comprenant un premier rouleau comprenant un dispositif de commande de vitesse de premier rouleau, et un deuxième rouleau comprenant un dispositif de commande de vitesse de deuxième rouleau. Un exemple de procédé comprend les étapes suivantes: (a) régler le premier rouleau à une vitesse de traitement souhaitée à l'aide du dispositif de commande de vitesse de premier rouleau; (b) déterminer un couple cible du premier rouleau; (c) engager avec contact les premier et deuxième rouleaux; (d) déterminer un couple réel du premier rouleau; (e) comparer le couple cible et le couple réel; et, (f) régler une vitesse du deuxième rouleau à l'aide du dispositif de commande de vitesse de deuxième rouleau afin de maintenir le couple cible du premier rouleau en fonction de la comparaison du couple cible et du couple réel.

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