A Method of the Fault Diagnosis for Gear Using Torsional Vibration Signals

摘要

This pape r introduces a method of the fauIt diagnosis for gea r using to rsional vibration signals of high resolution In order to diagnose fauIts of gear linea r vib ration signals on gea rbox are usually used When these signals are transmitted th rough complex path,they may lose some fault information Torsional vibration signals reflect directly fauIt characte r of gear Signal—noise ration of these signals is higher than that of linear vibration signals So it is more suitable fo r diagnosing faults of gear Torsional vibration signals a re acquired by incremental code r of high density and appropriate way of pulse demodulation Some spectral analysis methods are used to analyze torsional vibration signals Fault cha racte r of gea r is obtained Thereby determine type and deg ree of faults