Table 4 Evaluation table of denoising effect.

From: Denoising research of shearer picks load signal based on MPE-VMD algorithm

Signal

Denoising method

SNR/dB

RSNR/dB

\(R^{2}\)

RMSE

CC

Time/s

Blocks

EMD

10.19*

16.28*

0.5259*

402.5*

0.5268*

0.0151

WT

23.31

29.71

0.9769

88.9

0.9778

0.0110

VMD

27.46

33.91

0.9911

55.1

0.9921

0.2890

MPE-VMD

36.00

42.45

0.9988

20.61

0.9997

0.3778

Bumps

EMD

17.15*

25.57*

0.9706*

180.5*

0.9719*

0.0079

WT

31.25

39.76

0.9989

35.61

0.9991

0.0047

VMD

19.29

27.71

0.982

141.2

0.9826

0.2760

MPE-VMD

37.10

45.56

0.9997

18.16

0.9935

0.4043

Doppler

EMD

19.618*

23.98*

0.9608*

136*

0.9672*

0.0056

WT

35.33

39.77

0.9989

22.28

0.9996

0.0051

VMD

22.29

26.72

0.9788

99.93

0.9796

0.2941

MPE-VMD

37.10

41.55

0.9993

18.17

0.9843

0.4316

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