Axial Piston Pump Fault Diagnosis Method Based on Symmetrical Polar Coordinate Image and Fuzzy C-Means Clustering Algorithm

Table 4

The eigenvalue benchmarks of the four conditions of axial piston pump.

State name	ASM	Con	Cor	Hom
Normal	0.67	0.72	0.94	0.96
Swash plate wear	0.78	1.11	0.87	0.97
Loose slipper	0.85	0.66	0.88	0.98
Sliding shoe wear	0.86	1.17	0.99	0.97