(a)
(b)
(c)
(d)
(e)
(f)
(g)
(h)
Figure 6: The IMF and spectrum with the vibration signal after the decomposition with ICEEMD-De: (a, c, e, and g) is IMF1~IMF4 and (b, d, f, and h) is IMF1~IMF4 spectrum.