Research Article
Rolling Element Bearing Fault Diagnosis Using Integrated Nonlocal Means Denoising with Modified Morphology Filter Operators
Figure 6
Simulated signal with low level Gaussian white noise: (a) waveform and (b) FFT spectrum of the simulated signal after DIF morphology analysis; (c) waveform and (d) FFT spectrum of the simulated signal after AVR morphology analysis; (e) waveform and (f) FFT spectrum of the simulated signal after Modified-DIF morphology analysis; (g) simulated signal after NLM denoising; (h) waveform; and (i) FFT spectrum of the simulated signal after Modified-DIF morphology-based NLM denoising analysis.
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