A Diagnosis Framework for High-reliability Equipment with Small Sample Based on Transfer Learning

Table 2

Scheme of fault injection test.

NO.	Statement		Sample size (group)	Channel number	Time(second)	Frequency(Hz)
1	Normal		30	4	5	6000
2	foreign object damage	1 impeller blade	30	4	5	6000
3		2 impeller blades	30	4	5	6000
4		all impeller blades	30	4	5	6000
5		Diffusion tube	30	4	5	6000
6		all impeller blades & Diffusion tube	30	4	5	6000
7	scratch	back of impeller scrapes with diffusion tube	2	4	60	6000
8		edge of impeller inlet scrapes with oil pump mouth ring	2	4	60	6000
9	leakage		30	4	5	6000
10	bearing wear	Wear 0mm	15	4	5	6000
11		Wear 0.02mm	15	4	5	6000
12		Wear 0.05mm	15	4	5	6000
13		Wear 0.08mm	15	4	5	6000
14		Wear 0.10mm	15	4	5	6000
15		Wear 0.12mm	15	4	5	6000