Method for controlling the delivery of lubricant

B - Operations – Transporting – 61 – K

Patent

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Details

B61K 3/00 (2006.01) F16N 29/02 (2006.01)

Patent

CA 2387078

The invention relates to a method for controlling the delivery of lubricant between two parts that can be moved in relation to one another, especially for lubricating rails, above all in curved tracks, in order to prevent or reduce squeaking noises. To this end, at least one sensor, e.g. a microphone, is provided for picking up acoustic vibrations, especially body acoustic vibrations. The signal of said sensor is fed to a selective amplifier, e.g. to an active bandpass filter, and is used as an actuating variable for initiating the delivery of lubricant. In doing this, at least two frequency bands are filtered out, the intensities of the acoustic vibrations of the filtered frequency bands are compared to one another, and the determined difference or the ratio of the determined values is used as an actuating variable.

La présente invention concerne un procédé pour commander la distribution de lubrifiant entre deux parties mobiles l'une par rapport à l'autre, notamment afin de lubrifier des rails, avant tout dans des courbures de voie, en vue d'éviter ou de réduire les bruits de grincement. Au moins un détecteur, tel qu'un microphone, permet de capter des vibrations acoustiques, notamment des vibrations acoustiques de structure. Le signal dudit détecteur est transmis à un amplificateur sélectif, tel qu'un filtre passe-bande actif, puis est utilisé en tant que grandeur de commande pour déclencher la distribution de lubrifiant. Au moins deux bandes de fréquence sont filtrées, les intensités des vibrations acoustiques des bandes de fréquence filtrées sont comparées les unes aux autres, puis la différence ou le rapport déterminé des valeurs déterminées les unes par rapport aux autres est utilisé en tant que grandeur de commande.

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