A dynamic, non-uniform clock for resampling and processing...

G - Physics – 01 – D

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G01D 3/028 (2006.01) G01H 1/00 (2006.01) G01H 11/00 (2006.01) G01M 13/00 (2006.01) G01M 13/02 (2006.01) G01N 29/00 (2006.01) G04B 23/00 (2006.01)

Patent

CA 2278701

A method and device (100) for processing quasi-periodic signals from machines (200) that provides improved diagnostic results. A dynamic, non-uniform signal termed the speed clock (36) controls processing of the signals. This processing prevents the leakage artifacts and poor frequency resolution that can mask signal components and limit the diagnostic value of existing technology. Valuable phase information, which is destroyed by existing sampling methods controlled directly by encoder signals, is retained. The invention also enables removal of large masking signal components without otherwise altering the signal. By preventing artifacts, retaining phase information, and removing undesirable signal components, the present invention is a dramatic improvement over existing technology for processing signals to determine the health and performance of operating machines.

Cette invention concerne un procédé et un dispositif (100) permettant de traiter des signaux quasi-périodiques issus de machines (200) et d'obtenir des résultats perfectionnés de diagnostic. Un signal dynamique, non uniforme appelé "signal d'horloge de vitesse" (36) gère le traitement des signaux. Ce traitement empêche les artefacts de fuite et une faible résolution en fréquence qui peuvent masquer des composantes des signaux et limitent la valeur diagnostique de la technologie existante. De précieuses informations de phase, qui sont détruites par les procédés d'échantillonnage existants gérés directement par des signaux de codeurs, peuvent être conservées. L'invention permet également de supprimer des composantes importantes des signaux de masquage sans pour autant modifier le signal. En évitant les artefacts, en conservant les informations de phase et en supprimant des composantes des signaux indésirables, la présente invention apporte un perfectionnement considérable par rapport à la technologie existante s'agissant du traitement de signaux en vue de diagnostiquer le bon état et l'efficacité de machines d'exploitation.

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