Research Article

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

Table 3

Experiment list.

NumberExperiment typeExperiment nameFailure part coding

1NormalNormal gear-normal bearingNAN

2Single failureNormal gear-bearing outer ring line erosionB_OR(a)
3Normal gear-bearing outer ring pittingB_OR(b)
4Normal gear-bearing rolling element line erosionB_B(a)
5Normal gear-bearing rolling element pittingB_B(b)
6Normal gear-bearing inner ring line erosionB_IR(a)
7Normal gear-bearing inner ring pittingB_IR(b)
8Planetary gear severe line erosion-normal bearingP_1
9Planetary gear slight line erosion-normal bearingP_2
10Pitting corrosion of planetary gear tooth surface-normal bearingP_3
11Planetary gear missing angle-normal bearingP_4
12Planetary gear tooth surface microwear-normal bearingP_5
13Sun gear severe line erosion-normal bearingS_1

14Compound failure in the same transmission stageNormal gear-bearing outer ring and rolling element line erosionB_OR(a), B_B(a)
15Normal gear-bearing outer ring and rolling element pittingB_OR(b), B_B(a)
16Severe line erosion of planets and sun gear-normal bearingP_1, S_1
17Severe and slight line erosion of planetary gear-normal bearingP_1, P_2
18Pitting corrosion of the planetary gear tooth surface and severe line erosion of sun gear-normal bearingP_3, S_1
19Missing angle of the planetary gear and severe line erosion of sun gear-normal bearingP_4, S_1

20Compound failure in different transmission stagesPlanetary gear severe line erosion-bearing outer ring pittingP_1, B_OR(b)
21Planetary gear severe line erosion-bearing rolling element pittingP_1, B_B(b)
22Planetary gear severe line erosion-bearing inner ring pittingP_1, B_IR(b)
23Planetary gear missing angle-bearing outer ring pittingP_4, B_OR(b)
24Planetary gear missing angle-bearing rolling element pittingP_4, B_B(b)
25Planetary gear missing angle-bearing inner ring pittingP_4, B_IR(b)

26Multiple compound failureSevere line erosion and slight line erosion of the planetary gear and severe line erosion of sun gear-normal bearingP_1, P_2, S_1