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

Table 1

Correlation coefficients of each component and original signal.

IMF	1	2	3	4	5
r	0.7256	0.6330	0.0010	−0.0067	0.0112
IMF	6	7	8	9
r	6.3124e − 04	0.0102	−0.0107	−0.0118