New Tool Wear Estimation Method of the Milling Process Based on Multisensor Blind Source Separation

Table 5

Estimation error of three methods in the experiment.

	LS-SVM	PCA + LS-SVM	SSA + LS-SVM
RMSE	0.2309	0.1094	0.0529
R	0.3414	0.6701	0.8938