Apparatus and method for controlling a paper machine or...

D - Textiles – Paper – 21 – G

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D21G 9/00 (2006.01)

Patent

CA 2650657

A method includes predicting measurements or states to be used by a controller (202) to control a process (204). The predicted measurements or states are generated using a model of the process (204). The method also includes providing the predicted measurements or states to the controller (202) such that the controller (202) uses the predicted measurements or states at a sampling rate of the controller (202). In addition, the method includes updating at least some of the predicted measurements or states using measurements associated with a characteristic of an item from a sensor. The model may represent a discrete time model (304), and the method may also include generating the discrete time model (304) using a continuous time model (302) of the process (204). The measurements could be received from a plurality of sensors (122, 124), where at least two of the sensors have different sampling times.

Procédé de prédiction de mesures ou d'états pour les besoins d'un contrôleur (202) en vue du contrôle d'un processus (204). On établit ces prédictions sur la base d'un modèle du processus (204). Le procédé consiste aussi à fournir les prédictions au contrôleur (202), pour lui permettre de les utiliser à un taux d'échantillonnage qui lui (202) est propre. Le procédé consiste en outre à mettre à jour au moins certaines des prédictions sur la base de mesures associées à une caractéristique d'un élément de capteur. Le modèle peut représenter un modèle chronologique discret (304), et enfin le procédé peut consister à produire ce modèle (304) sur la base d'un modèle chronologique continu (302) du processus. Les mesures peuvent être reçues depuis une pluralité de capteurs (122, 124) dans laquelle au moins deux des capteurs ont des temps d'échantillonnage différents.

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