Cross-direction actuator and control system with adaptive...

D - Textiles – Paper – 21 – G

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D21G 9/00 (2006.01) D21F 1/06 (2006.01) D21F 1/08 (2006.01) D21F 7/00 (2006.01) D21F 7/06 (2006.01) D21G 1/00 (2006.01) D21G 7/00 (2006.01)

Patent

CA 2530424

A method and system for controlling one or more properties of a sheet of material to be manufactured on a sheet-making machine is disclosed. Actuators to control the sheet properties are arrayed in the cross-direction of the machine. Properties data about one or more properties of the sheet of material are measured and both the magnitude of an actuator control action and the cross-direction shape of an actuator control action are controlled to minimize the variation of the measured properties data from a desired target for each of the one or more properties.

Cette invention se rapporte à un procédé et à un système permettant de commander une ou plusieurs propriétés d'une feuille de matériau à fabriquer sur une machine de fabrication de telles feuilles. Des actuateurs servant à commander les propriétés des feuilles sont disposés en réseau dans le sens travers de la machine. Des données de propriétés concernant une ou plusieurs propriétés de la feuille de matériau sont mesurées et l'amplitude de l'action de commande des actuateurs et la forme en sens travers de l'action de commande des actuateurs sont toutes les deux commandées de façon à réduire au minimum la variation des données des propriétés mesurées à partir d'une cible souhaitée pour chacune des propriétés.

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