Table 3: Iterative learning calculating result of wall thickness of reducing tube.

Ser. numberVariable nameInitial valueFirst learning valueSecond learning valueThird learning valueFourth learning value

1Rotary speed of 
Number 1 reducing mill
1137.521136.511134.251133.15 1132.53
2Rotary speed of 
Number 2 reducing mill
1133.821132.651131.581130.52 1130.22
3Rotary speed of 
Number 3 reducing mill
1288.241288.931289.361290.05 1290.22
4Rotary speed of 
Number 4 reducing mill
1409.321408.311407.151406.53 1406.17
5Rotary speed of 
Number 5 reducing mill
1485.261483.841482.371480.981480.68
6Rotary speed of 
Number 6 reducing mill
1458.811459.841460.371460.641460.87
7Rotary speed of 
Number 7 reducing mill
1179.951178.681177.551177.091176.95
8Rotary speed of 
Number 8 reducing mill
1110.951109.721108.661107.851107.62
9Rotary speed of 
Number 9 reducing mill
1290.431291.421292.371293.211293.38
10Rotary speed of 
Number 10 reducing mill
1220.671219.551218.761217.841217.52
11Rotary speed of 
Number 11 reducing mill
1143.381141.751140.531139.611138.92
12Rotary speed of 
Number 12 reducing mill
1103.211102.331101.361100.521100.22
13Current of Number 1 
reducing mill
35.4634.7534.2433.97 33.91
14Current of Number 2 
reducing mill
52.4851.6251.2851.07 50.98
15Current of Number 3 
reducing mill
41.5442.3742.9743.31 43.42
16Current of Number 4 
reducing mill
134.52133.75133.24133.94 133.87
17Current of Number 5 
reducing mill
218.21217.47216.84216.37216.28
18Current of Number 6 
reducing mill
332.46333.23333.86334.32334.44
19Current of Number 7 
reducing mill
324.46323.71323.14322.71322.62
20Current of Number 8 
reducing mill
302.35301.43300.85300.18300.02
21Current of Number 9 
reducing mill
326.87327.95328.56328.83 328.92
22Current of Number 10 
reducing mill
324.37323.65323.15322.97 322.88
23Current of Number 11 
reducing mill
325.84324.77324.24323.95 323.86
24Current of Number 12 
reducing mill
274.94274.04273.65273.13 273.04
25Torque of Number 1 
reducing mill
251.64252.31252.88253.23 253.32
26Torque of Number 2
reducing mill
320.48321.25321.93322.35 322.52
27Torque of Number 3 
reducing mill
62.4463.1263.3463.52 63.57
28Torque of Number 4 
reducing mill
445.85446.87447.66448.02 448.21
29Torque of Number 5 
reducing mill
652.48650.36648.82647.74647.48
30Torque of Number 6 
reducing mill
1042.681040.241039.071038.211037.98
31Torque of Number 7 
reducing mill
1204.151203.261202.771202.351202.12
32Torque of Number 8 
reducing mill
1251.421250.151249.141248.481248.22
33Torque of Number 9 
reducing mill
1175.251176.371177.061177.84 1178.12
34Torque of Number 10 
reducing mill
1214.851213.451212.841212.25 1212.07
35Torque of Number 11 
reducing mill
1316.471317.571318.161318.54 1318.75
36Torque of Number 12 
reducing mill
1224.461223.241222.631222.22 1221.97
37The temperature 
of shell
886892896898901