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

Table 1

System operation states at different operation speeds.

Experiment	1	2	3	4	5	6	7	8
Class code	(a)	(b)	(c)	(d)	(e)	(f)	(g)	(h)
Operating speed/rpm	2000	3000	5500	6200	2000	3000	5500	6200
Observed state of operation	Normal	Resonance at first critical frequency	Oil whirl	Oil whip	Unbalance	Resonance with unbalance mass	Oil whirl with unbalance mass	Oil whip with unbalance