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

Figure 11

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

(a)

(b)

(c)

(d)