Bearing Fault Diagnosis in the Mixed Domain Based on Crossover-Mutation Chaotic Particle Swarm

Table 2

Energy normalization results of dual-LMD decomposition.

Operating status	Fault type	E1	E2	E3	E4	E5	E6	E7	E8	E9
No-load	Outer ring failure	0.5004	0.1578	0.1302	0.1270	0.0921	0.0651	0.0406	0.0427	0.0241
	Ball failure	0.5589	0.1731	0.1187	0.0754	0.0393	0.0224	0.0065	0.0031	0.0026
	Inner ring failure	0.4514	0.2081	0.1524	0.1055	0.0652	0.0434	0.0079	0.0065	0.0050
With load	Outer ring failure	0.3425	0.3047	0.1484	0.1337	0.0343	0.0253	0.0071	0.0027	0.0013
	Ball failure	0.3435	0.1998	0.1453	0.1428	0.0702	0.0391	0.0045	0.0023	0.0014
	Inner ring failure	0.4001	0.2835	0.1318	0.0925	0.0732	0.0165	0.0048	0.0029	0.0016