Applications of an Improved Time-Frequency Filtering Algorithm to Signal Reconstruction

Figure 13

The waveforms of the machine fault signals in time domain. (a) The original bearing outer race fault signals in FE. (b) The original bearing outer race fault signals in FE contaminated by SαS distribution noise. (c) The restored bearing outer race fault signals in FE employing the STFT-TFF method. (d) The bearing outer race fault signals in FE reconstructed by the FLOSTFT-TFF method.

(a)

(b)

(c)

(d)