Table 11 Results of the field orthogonal test.

From: Optimization and experimental analysis of a cleaning device for super rice with high impurity rates based on airflow field enhancement

j

i

y*

performance /%

yi1

Impurity rate /%

yi2

Loss rete%

A

Fan speed/ (r/min)

B

Inclination angle of the first guide plate / (°)

C

Opening degree of the fish-scale sieve / (mm)

D

Inclination angle of the second guide plate / (°)

1

1

1

1

1

3.77

4.01

3.55

2

1

2

4

2

2.35

2.65

2.11

3

2

3

2

2

3.40

3.59

3.23

4

2

4

3

1

3.55

3.74

3.38

5

3

3

3

2

3.12

3.89

2.61

6

3

4

2

1

1.93

2.29

1.67

7

4

1

4

1

5.2

5.31

5.09

8

4

2

1

2

4.23

4.24

4.22

yj1*

6.16

8.98

8.01

14.5

   

yj2*

6.97

6.61

5.39

13.3

   

yj3*

5.23

6.66

6.81

    

yj4*

9.43

5.54

7.58

    

Rj

4.2

3.44

2.62

1.25

   

Rj’

2.67

2.19

1.69

1.77

   

Optimal level

A3

B4

C2

D2

   

Primary and

secondary order

A B D C

   

Optimal parameter

combination

A3 B4 D2C2

   
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