A Fault Diagnosis Scheme for Rolling Bearing Based on Particle Swarm Optimization in Variational Mode Decomposition

Table 2

The result of EMD method.

	Sinusoidal signal	Cosine signal	FM signal
IMF1	0.2021	0.6132	0.5921
IMF2	0.7983	0.2180	0.0032
IMF3	0.0276	0.0014	0