Gearbox Fault Detection of Induction Motor Using Stator Current Signal Demodulation

All of the induction motor faults are not detect in beginning and late perception of these faults will cause to very lose tolerance. Thus, fault detection and identification in induction motors have high importance for industrial activities. One of the most fault detection methods is motor current signal analysis. In this paper, we use a new method with title induction motor stator current signal demodulation for gearbox faults. Gearbox faults are often results of gear tooth damages and this problem causes to creation some frequencies with harmonics in stator current signal. Gearbox faults detection are under study and demodulation analysis presented. In fact, fault frequency will directly observe by beneficiary without calculating fault bandwidth. The results present high performance and accuracy of proposed method in compare of Fourier transform analysis.