SYSTEM AND METHOD FOR MONITORING GEAR AND BEARING HEALTH

摘要

A method for monitoring a gear and bearing system having at least two inter-meshing gears and at least one bearing includes detecting gear and bearing vibrations with at least one vibration sensor operable to generate a signal representative of the detected gear vibrations. A carrier frequency is identified from the generated signal. A band pass filter is applied to the signal at the carrier frequency to create a filtered signal. An envelope is extracted from the filtered signal to create an extracted signal. A time-frequency analysis is then applied to the extracted signal which allows for identification of degradation of the gears.

主权项

1. A method for monitoring a gear and bearing system having at least two inter-meshing gears and at least one bearing, comprising:
detecting gear and bearing vibrations with at least one vibration sensor operable to generate a signal representative of the detected gear and bearing vibrations; identifying a carrier frequency by applying a time-frequency transformation to the generated signal; applying a narrow band pass filter at the carrier frequency to create a filtered signal; extracting an envelope of the filtered signal to create an extracted signal; applying time and frequency analysis to the extracted signal; and identifying the component and degradation of the gears and bearings based on the time frequency analysis.