Determination of winding/unwinding roll density using time...

B - Operations – Transporting – 65 – H

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B65H 18/00 (2006.01) B65H 18/26 (2006.01) G01N 9/00 (2006.01) G01N 9/36 (2006.01) G01N 33/34 (2006.01)

Patent

CA 2450753

The method concerns a method for determination of roll density, wherein the density of the wound roll is determined in connection with the web reel. The method uses the known relation between the length (l), diameter (D), basis weight (b) and density (.rho.) of the wound roll, formula (I). In the method, distortions caused in the measurement results by noise and other disturbances are eliminated by using a recursive time variant least squares method in the processing of the measurement results.

L'invention concerne un procédé de détermination de la densité d'un rouleau, dans lequel la densité du rouleau enroulé est déterminée par rapport à la bobine de papier. Ledit procédé consiste à utiliser la relation connue entre la longueur (l), le diamètre (D), le poids de base (b) et la densité (.rho.) du rouleau enroulé, formule (I). Dans ledit procédé, les distorsions induites par le bruit et d'autres perturbations dans les résultats des mesures sont éliminées au moyen d'une méthode des moindres carrés récursifs à paramètres variables dans le temps, dans le traitement des résultats de mesures.? ¿

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