Complexity Analysis of Time-Frequency Features for Vibration Signals of Rolling Bearings Based on Local Frequency

Table 4

The LZC features of time-frequency distribution for the rolling bearing at different speeds.

Rotation speed (r/min)	Normal	Inner ring fault	Outer ring fault	Rolling element fault
1797	0.0459	0.0637	0.0764	0.0841
1772	0.0507	0.0588	0.0825	0.0912
1750	0.0611	0.0433	0.1188	0.1121
1730	0.0688	0.0312	0.1217	0.1172