A method and a system for evaluating whether a signal is...

G - Physics – 05 – B

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G05B 5/00 (2006.01) G05B 5/01 (2006.01) G05B 15/00 (2006.01) G05B 17/00 (2006.01) G05B 23/00 (2006.01)

Patent

CA 2428691

A method for evaluating whether a measurable disturbance (d) on a process (1) controlled by a feedback controller (2) is suitable for feed-forward control, characterized in that it comprises the steps of measuring said disturbance, measuring the controller output signal (u) due to said disturbance, generating a first reference signal (7) corresponding to the output signal from the controller when responding to a disturbance entering before the process, generating a second reference signal (8) corresponding to the output signal from the controller when responding to a disturbance entering after the process, comparing the measured controller output signal due to the disturbance with the reference signals, and evaluating whether the disturbance is suitable for feed-forward control depending on said comparison.

La présente invention concerne un procédé qui permet d'évaluer si une perturbation mesurable (d) se produisant sur un processus (1) commandé par un régulateur (2) est adapté à la précompensation. Ce procédé se caractérise en ce qu'il comprend les étapes suivantes: on mesure la perturbation, on mesure le signal de sortie (u) du régulateur dû à cette perturbation, on génère un premier signal de référence (7) correspondant au signal de sortie produit par le régulateur lorsqu'il réagit à une perturbation entrant avant le processus, on génère un deuxième signal de référence (8) correspondant au signal de sortie produit par le régulateur entrant après le processus, on compare aux signaux de référence, le signal de sortie du régulateur mesuré dû à la perturbation et on évalue, en fonction de ladite comparaison, si la perturbation est adaptée à la précompensation.

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