A Novel Shearer Cutting State Recognition Method Based on Improved Variational Mode Decomposition and LSSVM with Acoustic Signals

Table 6

The cutting state recognition results of the four methods.

Methods	Accuracy (%)			Standard deviation
	Max.	Min.	Mean
The proposed method	97.50	92.50	95.54	0.01669
GSA − VMD + PCA	95.00	90.83	92.92	0.01684
VMD + PCA	94.17	88.33	91.25	0.02165
EEMD + PCA	95.00	90.00	92.75	0.01675