Intelligent Diagnosis Method for Centrifugal Pump System Using Vibration Signal and Support Vector Machine

Table 7

The diagnostic results of various states with the defect degrees by fuzzy neural network.

Test state	Defect degree	Judge state by fuzzy neural network
		Direct diagnosis	Sequential diagnosis
Normal ()
Cavitation ()	Mild
	Medium
	Severe
Impeller unbalance ()	Mild
	Medium
	Severe
Shaft misalignment ()	Mild
	Medium
	Severe