Adaptive error correction control system for optimizing...

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G05B 13/02 (2006.01) F25B 9/14 (2006.01) G05B 5/01 (2006.01) G05B 21/02 (2006.01)

Patent

CA 2114804

An adaptive control includes a digital error correction system (DECS) (51) to reduce control system error to near zero by anticipating a problem and feeding forward in time a correction to deal with the problem before it happens. The adaptive control is used in a controlled system of the kind which is cyclical in operation and which operates in response to repetitive cycle commands so that the operation of the system is substantially predictable for a significant number of cycles of operation. The adaptive control is incorporated in a refrigerator system in which two Stirling cycle refrigerators are mounted in opposition to one another. The adaptative control permits accurate control of the command waveform frequency and shape, enables the refrigerator system to be more thermodynamically efficient, and enables the two refrigerators to exactly cancel each other's vibration.

Commande adaptative comprenant un système numérique de correction d'erreur (DECS) (51) afin de réduire à près de zéro les erreurs de système de commande en prévoyant un problème et en apportant la correction voulue de façon anticipée. La commande adaptative est utilisée dans un système commandé de type cyclique obéissant à des commandes cycliques répétitives, ce qui permet de prévoir en grande partie le fonctionnement du système pour un nombre important de cycles opératoires. La commande adaptative est incorporée à un système de réfrigération dans lequel sont montés face à face deux réfrigérateurs à cycle de Stirling. Elle permet de commander précisément la fréquence et la forme de l'onde de commande, améliore l'efficacité thermodynamique du système réfrigérateur et permet à chacun des deux réfrigérateurs de supprimer exactement la vibration de l'autre.

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