Fault Diagnosis Method for Rotating Machinery Based on Hierarchical Amplitude-Aware Permutation Entropy and Pairwise Feature Proximity

<div>The original feature vectors and the sensitive feature vectors. (a) Original fault features; (b) fault features after ranking.</div>

Shock and Vibration

Figure 7: Fault Diagnosis Method for Rotating Machinery Based on Hierarchical Amplitude-Aware Permutation Entropy and Pairwise Feature Proximity 