Method for monitoring and analyzing a paper production process

Details Method for monitoring and analyzing a paper production process Method for monitoring and analyzing a paper production process

G - Physics

05

B

G05B 21/00 (2006.01) D21F 11/00 (2006.01) D21G 9/00 (2006.01) G05B 23/00 (2006.01) G05B 23/02 (2006.01)

Patent

CA 2500789

The invention relates to a method for monitoring and analysing a production process. In the method, a large number of variables are measured from the process, with the aid of these variables, fingerprints according to a good process situation, relative to runnability, are defined in several sub- processes and are then stored in a memory, the stored fingerprints are compared with fingerprints obtained in a normal process situation, on the basis of the comparison, an index of the difference, displayed graphically to user, between the recorded good situation and the momentary process situation is defined, and a runnability index, depicting the runnability of the entire paper machine and a quality index depicting the quality of the paper produced, are formed from these indices.

L'invention a trait à un procédé permettant de superviser et d'analyser un processus de production. Le procédé selon l'invention consiste : à mesurer un grand nombre de variables issues du processus ; à définir, à l'aide de ces variables, dans plusieurs sous-processus, des caractérisations relatives liées à l'exécutabilité dans une situation de processus satisfaisante, puis à les stocker dans une mémoire ; à comparer les caractérisations stockées avec des caractérisations obtenues dans une situation de processus normale ; à définir, sur la base de ladite comparaison, un indice de la différence, affichée graphiquement à l'intention de l'utilisateur, entre la situation satisfaisante enregistrée et la situation de processus actuelle ; et à former, à partir desdits indices, un indice d'exécutabilité, qui illustre l'exécutabilité de l'ensemble de la machine à papier, et un indice de qualité, qui illustre la qualité du papier produit.

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