Gearbox Fault Diagnosis based on Vibration Signals Measured Remotely

摘要

In many cases, it is impractical to measure the vibrations directly at or close to their source.\udIt is a common practice to measure the vibration at a location far from the source for condition\udmonitoring purposes. The vibration measured in this way inevitably has high distortions from the\udvibrations due to the effect of the attenuation of signal paths and the interference from other sources.\udThe suppression of the distortions is a key issue for the remote measurements based condition\udmonitoring. In this paper, the influences of transducer locations are investigated on a typical gearbox\udtransmission system for the detection of the faults induced to the gearbox. Several signal processing\udtechniques’ analysis results show that the attenuation and interference cause high influences on the\udgear transmission signals. However, time synchronous average (TSA) is very effective to detect the\udlocal faults induced to the gear system.