An Intelligent Diagnostic Method for Multisource Coupling Faults of Complex Mechanical Systems

Table 3

Experiment list.

Number	Experiment type	Experiment name	Failure part coding
1	Normal	Normal gear-normal bearing	NAN
2	Single failure	Normal gear-bearing outer ring line erosion	B_OR(a)
3		Normal gear-bearing outer ring pitting	B_OR(b)
4		Normal gear-bearing rolling element line erosion	B_B(a)
5		Normal gear-bearing rolling element pitting	B_B(b)
6		Normal gear-bearing inner ring line erosion	B_IR(a)
7		Normal gear-bearing inner ring pitting	B_IR(b)
8		Planetary gear severe line erosion-normal bearing	P_1
9		Planetary gear slight line erosion-normal bearing	P_2
10		Pitting corrosion of planetary gear tooth surface-normal bearing	P_3
11		Planetary gear missing angle-normal bearing	P_4
12		Planetary gear tooth surface microwear-normal bearing	P_5
13		Sun gear severe line erosion-normal bearing	S_1
14	Compound failure in the same transmission stage	Normal gear-bearing outer ring and rolling element line erosion	B_OR(a), B_B(a)
15		Normal gear-bearing outer ring and rolling element pitting	B_OR(b), B_B(a)
16		Severe line erosion of planets and sun gear-normal bearing	P_1, S_1
17		Severe and slight line erosion of planetary gear-normal bearing	P_1, P_2
18		Pitting corrosion of the planetary gear tooth surface and severe line erosion of sun gear-normal bearing	P_3, S_1
19		Missing angle of the planetary gear and severe line erosion of sun gear-normal bearing	P_4, S_1
20	Compound failure in different transmission stages	Planetary gear severe line erosion-bearing outer ring pitting	P_1, B_OR(b)
21		Planetary gear severe line erosion-bearing rolling element pitting	P_1, B_B(b)
22		Planetary gear severe line erosion-bearing inner ring pitting	P_1, B_IR(b)
23		Planetary gear missing angle-bearing outer ring pitting	P_4, B_OR(b)
24		Planetary gear missing angle-bearing rolling element pitting	P_4, B_B(b)
25		Planetary gear missing angle-bearing inner ring pitting	P_4, B_IR(b)
26	Multiple compound failure	Severe line erosion and slight line erosion of the planetary gear and severe line erosion of sun gear-normal bearing	P_1, P_2, S_1