Research Article
An Enhanced Version of Second-Order Synchrosqueezing Transform Combined with Time-Frequency Image Texture Features to Detect Faults in Bearings
Figure 9
Normalized energy as a function of the number of coefficients for experimental signals: (a) fault-free, (b) ball fault, (c) inner ring fault, (d) outer ring fault, and (e) combined fault of inner and outer rings.
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(b) |
(c) |
(d) |
(e) |