Abstract:
In the fault diagnosis method of the resonance demodulation of the planetary gear of the wind turbine, there are some shortcomings like artificial difficulties in demodul...Show MoreMetadata
Abstract:
In the fault diagnosis method of the resonance demodulation of the planetary gear of the wind turbine, there are some shortcomings like artificial difficulties in demodulation band and low demodulation spectral resolution. In this paper, wavelet packet decomposition and reconstruction method are used effectively to extract the resonance frequency components caused by the local fault of gear, which solves the traditional artificial limitations of resonance frequency demodulation. According to the principle of frequency shift modulation, a real modulation frequency-shift method is proposed, in which positive and negative frequency spectrum is achieved symmetrically. Wavelet packet filtering and real modulated signal are re-sampled, and then through the Hilbert transform, a real modulation zoom envelope spectrum is acquired. Finally, on the wind turbine fault simulation test bench, the fault diagnosis experimental analysis of the planetary gear shows that the method is correct and practical.
Date of Conference: 18-20 July 2017
Date Added to IEEE Xplore: 23 October 2017
ISBN Information:
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- IEEE Keywords
- Index Terms
- Fault Diagnosis ,
- Planetary Gear ,
- Low Resolution ,
- Experimental Analysis ,
- Resonance Frequency ,
- Frequency Shift ,
- Frequency Components ,
- Reconstruction Method ,
- Wind Turbine ,
- Positive Frequency ,
- Hilbert Transform ,
- Wavelet Packet ,
- Real Spectrum ,
- Fault Simulation ,
- Frequency Band ,
- Time Domain ,
- Accelerometer ,
- Fast Fourier Transform ,
- Power Generation ,
- Wavelet Transform ,
- Doubly Fed Induction Generator ,
- Vibration Signals ,
- Real Shift ,
- Original Signal ,
- Wavelet Decomposition ,
- Second Harmonic Generation ,
- Time-frequency Analysis ,
- Instantaneous Amplitude ,
- Current Sensor ,
- Spectrum Of Signal
- Author Keywords
Keywords assist with retrieval of results and provide a means to discovering other relevant content. Learn more.
- IEEE Keywords
- Index Terms
- Fault Diagnosis ,
- Planetary Gear ,
- Low Resolution ,
- Experimental Analysis ,
- Resonance Frequency ,
- Frequency Shift ,
- Frequency Components ,
- Reconstruction Method ,
- Wind Turbine ,
- Positive Frequency ,
- Hilbert Transform ,
- Wavelet Packet ,
- Real Spectrum ,
- Fault Simulation ,
- Frequency Band ,
- Time Domain ,
- Accelerometer ,
- Fast Fourier Transform ,
- Power Generation ,
- Wavelet Transform ,
- Doubly Fed Induction Generator ,
- Vibration Signals ,
- Real Shift ,
- Original Signal ,
- Wavelet Decomposition ,
- Second Harmonic Generation ,
- Time-frequency Analysis ,
- Instantaneous Amplitude ,
- Current Sensor ,
- Spectrum Of Signal
- Author Keywords