Fault Identification of Rotor System Based on Classifying Time-Frequency Image Feature Tensor

Figure 2

AOK time-frequency spectrogram for each sample vibration.

(a) Normal state

(b) Resonance at first critical frequency

(c) Oil whirl

(d) Oil whip

(e) Unbalance

(f) Resonance with unbalance

(g) Oil whirl with unbalance

(h) Oil whip with unbalance