A Fault Diagnosis Method for One-Dimensional Vibration Signal Based on Multiresolution tlsDMD and Approximate Entropy

Figure 20

The Frequency domain diagram of multiresolution DMD modes of normal roller bearing signal, where (a)–(h) are corresponding to signals in Figure 17, respectively.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)