| 摘要 |
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.
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