Fault Diagnosis Method for Rolling Bearing Based on Sparse Principal Subspace Discriminant Analysis

Table 4

The classification performance of different dimensionality reduction methods on four noisy bearing fault datasets.

Methods	Data	Data (10 dB)	Data (5 dB)	Data (2 dB)	Average
Original	78.4	77.6	74.4	73.4	75.95
PCA	83.7	83.2	82.2	81.6	82.68
FDA	94.5	94.2	93.6	92.8	93.78
PSDA	95.6	94.6	94.2	93.2	94.40
MFA	93.55	92.8	91.5	90.6	92.11
SPSDA	97.65	97.2	96.2	95.6	96.66