Milling Tool Wear State Recognition by Vibration Signal Using a Stacked Generalization Ensemble Model

Table 1

List of the extracted features.

Domain	Features	Expression
Time domain	Mean
	Peak
	Root mean square (RMS)
	Variance
	Kurtosis
	Skewness
Frequency domain	Amplitude of tooth passing frequency (TPF)
Time-frequency domain	Energy percentage of IMF