Research Article
Optimal SES Selection Based on SVD and Its Application to Incipient Bearing Fault Diagnosis
Figure 2
Simulation of the fault bearing vibration signal: (a) defect-induced periodic impulses; (b) the periodic impulses contaminated by noise; (c) frequency spectrums of pure periodic signal and noise-contained vibration signal; (d) squared envelope spectrums of the pure periodic signal and mixed signal.
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