Design and Optimization of Working Parts of Vertical Spiral Ditching Machine Based on Milling Force and BP Neural Network Model

Table 3

Variance analysis.

Index	Source	Degree of freedom	Sum of squares	Mean square		Significance
Power consumption		3	0.441	0.217	50.241	0.018
		3	0.153	0.073	15.667	0.055
		3	0.067	0.038	7.724	0.113
	Error	3	0.003
	Total	8	54.17
	After correction sum	7	0.66