Aeroengine Fault Diagnosis Using Optimized Elman Neural Network

Table 1

Fault mode and output labels.

Number	Fault models	Label
(1)	2.5 open air valve	1 0 0 0
(2)	2.9 open air valve	0 1 0 1
(3)	3.5 open air valve	0 0 1 0
(4)	3.0 open air valve	0 0 0 1