Encoder failure detection

H - Electricity – 02 – P

Patent

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Details

H02P 6/00 (2006.01) G01P 3/44 (2006.01)

Patent

CA 2574869

An encoder failure detector system and method for detecting failure of an encoder at near-zero rotational speeds. For example, in one embodiment a failure is indicated if a torque command exceeds a selected threshold for a selected period of time and no movement of a rotor is detected during the selected period of time.

L'invention concerne un système de détection de défaillance d'un encodeur et un procédé de détection de défaillance d'un encodeur à des vitesses de rotation proches de zéro. Par exemple, dans un mode de réalisation, une défaillance est indiquée si une commande de couple dépasse un seuil sélectionné pour une durée sélectionnée et si aucun mouvement d'un rotor n'est détecté pendant la durée sélectionnée.

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