Evaluation on Filter Performance of Variational Mode Decomposition and Its Application in Separating Closely Spaced Modes

Figure 3

The averaged center frequencies of each mode , in the case of three typical Hurst exponents: (a) H = 0.2, (b) H = 0.5, and (c) H = 0.8. The dashed lines denote the uniformly initialized center frequencies plotted as a function of modal order.

(a)

(b)

(c)