Table 7 Variance analysis of tool axis torque.

From: Study on digging form of mechanized harvesting of Cyperus esculentus and optimization test of device parameters

Source

Square sum

Degrees of freedom

Mean square

F

P

Model

6.04

9

0.6707

17.01

0.0006

A

0.2485

1

0.2485

6.30

0.0404

B

0.252

1

0.252

6.39

0.0393

C

0.3741

1

0.3741

9.49

0.0178

AB

0.6642

1

0.6642

16.84

0.0045

AC

1.23

1

1.23

31.25

0.0008

BC

1.43

1

1.43

36.21

0.0005

A2

0.4655

1

0.4655

11.81

0.0109

B2

0.5306

1

0.5306

13.46

0.008

C2

0.6487

1

0.6487

16.45

0.0048

Residual

0.276

7

0.0394

  

Lack of fit

0.1326

3

0.0442

1.23

0.4074

Error

0.1434

4

0.0359

  

Sum

6.31

16

   
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