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

Figure 12

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

(a)

(b)

(c)

(d)