Aero-Engine Vibration Fault Diagnosis Based on Harmonic Wavelet

Abstract:

Because of the complicated structure of rollers, it is very difficult to diagnosis aero-engine vibration fault. Harmonic wavelet method is proposed target towards whole-body vibration of aero-engine in this paper. To implement vibration fault diagnosis of Aero-engine, vibration signals are presented with time-frequency and spectrum of coefficients after harmonic wavelet transform. The designed method overcome noise disturbance and energy leakage and possesses better performance for aero-engine vibration analysis compared with traditional wavelet analysis method. With the vibration data from whole-body vibration experiment, the effectiveness of the designed method is illustrated and it could identify three classical vibration faulty modes accurately, which provides a better method for whole-body vibration fault diagnosis of Aero-engine.

• Periodical: Advanced Materials Research (Volumes 490-495)
• Pages: 218-222
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.490-495.218
• Online since: March 2012
• Authors: Tao Xu, Yan Jin, Jin Xu
• Keywords: Aero-Engine, Fault Diagnosis, Harmonic Wavelet, Whole Body Vibration (WBV)

References

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