Illustrative Examples, Two Different Machine Data

Illustrative Examples Machine Vibration Moderate Strong Knock region

White Noise, Background Noise

Background Noise Removal

Wavelet Decomposition Multiresolution

Wavelet Coefficients and Denoising

Residual( Noise Component)

Denoising, Another Example

Two Stage Denoising of Signals

Signal component at WP No.38: a) Severe Faulty Condition, b), Mild Fault (b), Fault-free Condition (c).

Denoised Signal, WP Node

Illustration of Sparsity of Wavelet Coeffs

Variability of Cyclic Signals

Illustration of Variablity, Spectral Variability, 16 cycles

Spectrum of the vibration signal and its denoised version

Variability in Cyclic Runs Variation of vibrations in three consecutive cycles OriginalDenoised

Analysis in Coefficient Domain