Method of controlling a treatment line

Details Method of controlling a treatment line Method of controlling a treatment line

C - Chemistry, Metallurgy

23

C

C23C 22/77 (2006.01) G05D 21/02 (2006.01)

Patent

CA 2355100

The invention relates to a method of controlling a treatment line. According to said method a) a correlation between one or several variable parameters of the chemical and/or physical processes of the treatment line and one or several characteristic values that are characteristic of the success of the treatment is established; rules are derived of this correlation that describe the dependence of the characteristic value or the characteristic values of the variable parameters; the correlation and/or the rules derived therefrom are stored in a control system for the treatment line; b) the one or the several characteristic value(s) is/are measured continuously or discontinuously; c) if said characteristic values deviate from a predetermined standard range of values, the/those variable parameter(s) that is/are most closely correlated with said characteristic value is/are modified in the direction which counteracts the deviation of the characteristic value or the characteristic values from the standard range.

L'invention concerne un procédé de commande d'une ligne de traitement, selon lequel, a) on établit une corrélation entre un ou plusieurs paramètres variables des processus chimiques et/ou physiques de la ligne de traitement et une ou plusieurs grandeurs, caractéristiques de l'issue positive du traitement. On en dérive des règles décrivant la dépendance de la grandeur ou des grandeurs par rapport aux paramètres variables. La corrélation et/ou les règles qui en sont dérivées sont mémorisées dans un système de commande pour la ligne de traitement; b) on mesure de manière continue ou discontinue une ou plusieurs grandeurs; c) en cas d'écart de ces grandeurs par rapport à la plage de valeur théorique donnée, on modifie le(s) paramètre(s) variable(s) qui est(sont) le mieux en corrélation avec cette grandeur, dans une direction agissant à l'encontre de l'écart de la grandeur ou des grandeurs par rapport à la plage théorique.

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