Gearbox Fault Diagnosis Using Complementary Ensemble Empirical Mode Decomposition and Permutation Entropy

Table 2

Permutation entropy values of IMF 1IMF 5.

	Permutation entropy value
	IMF 1	IMF 2	IMF 3	IMF 4	IMF 5
Normal condition	0.958	1.239	0.782	0.837	0.5036
Light fault condition	0.710	0.859	0.518	0.421	0.8421
Severe fault condition	0.539	0.709	0.876	0.659	0.2625