A Fault Diagnosis Method for Out-of-Round Faults of Metro Vehicle Wheels with Strong Noise

Table 2

Parameters of diagnosis model and accuracies.

Parameters	Test 1	Test 2	Test 3	Test 4	Test 5	Test 6
Number of iterations	1000	1000	1000	1000	1000	1000
Dimensions of KPCA	40	20	25	22	25	22
Nodes of first layer	50	30	20	30	30	30
Nodes of second layer	30	20	20	20	20	30
Testing accuracy	0.8057	0.8611	0.8889	0.9444	0.9722	0.9444
Learning rate	0.001	0.001	0.001	0.001	0.001	0.001
Average accuracy of 9 times	0.8426	0.8704	0.8481	0.8364	0.8858	0.9136