Research on Fault Diagnosis for Pumping Station Based on T-S Fuzzy Fault Tree and Bayesian Network

Table 2

The fault modes and cause for increased amplitude of the rotor’s power frequency.

Symbol	Node events	State
	Abnormal increase in fundamental frequency	(Yes, No)
	Quality imbalance	(Serious, General, No)
	Rotor thermal bending	(Serious, General, No)
	Fouling	(Serious, General, No)
	Parts break or fall off	(Yes, No)
	Initial eccentricity	(Serious, General, No)
	Improper starting and stopping	(Serious, General, No)
	Uneven heat in the movement	(Serious, General, No)