An Improved Energy Demodulation Operator Method Using Bspline Interpolation for Bering Fault Diagnosis of Elevator Motor
Traditional Teager energy demodulation operator method is susceptible to strong background noise in elevator operating systems,thus an enhanced energy demodulation operator method is proposed.This approach combines B-spline technique with the traditional Teager energy operator method,B-spline curves are utilized to filter the signal interpolation.Subsequently,the filtered signal is transferred by the Teager energy operator.Finally,Fourier transform is employed to obtain the spectrum diagram of the con-verted signal,revealing the fault characteristics.The proposed energy demodulation method based on the B-spline interpolation not only retains the advantages of traditional energy demodulation algorithms such as high precision and excellent time resolution,but also can extract the weak bearing fault characteristics of the strong noise backgrounds.The experiments verify the improved performance in the bearing fault detection under the strong background noise conditions,enabling the detection of early-stage fault degradation,it meets the applications of practical fault diagnoses.
elevator motorbearing fault diagnosisdemodulation methodB-spline interpolationTeager energy operator
万方数据
维普
