Real Time Cardan Shaft State Estimation of High-Speed Train Based on Ensemble Empirical Mode Decomposition

Table 2

The frequency characteristic of the IMFs shown in Figures 10 and 11.

IMF	1	2	3	4	5	6	7	8	9	10	11	12
A.I.F/Hz	4845	3222	1549	877	559.9	396.3	209.3	57.1	42.3	26.8	15.3	7.2
D.F.F/Hz	4662	2998	1499	860.7	599.6	424.7	166.4	53.3	39.6	27.3	14.9	6