열간압연 ROT 공정에서 학습구조의 최적화에 관한 연구

다국어 초록 (Multilingual Abstract)

We propose an algorithm that optimizes the learning structure of the heat flux coefficient through statistical similarity analysis to improve the temperature control problems in the run-out table (ROT) process of hot strip mills. The p-values are calculated for each segment of the learning structure to determine the similarity of the average values. Based on the proposed algorithms, we perform optimization tests with various steel types, thicknesses, and temperature grades produced in the ROT process. From the test results, the existing learning divisions are reduced by 62.2%. Using hot strip mill data, we show that the average of the bank fitness is significantly improved by the proposed learning structure.

참고문헌 (Reference)

1 박철재, "측정지연이 있는 ROT 공정의 외란제거를 위한 SPDR 제어기 설계" 제어·로봇·시스템학회 20 (20): 1023-1029, 2014

2 박철재, "열연 고강도강의 비정상부 온도제어를 위한 LBCC 개발" 제어·로봇·시스템학회 17 (17): 382-387, 2011

3 N. S. Samaras, "Water-cooled end-point boundary temperature control of hot strip via dynamic programming" 34 (34): 1335-1341, 1998

4 G. V. Ditzhuijzen, "The controlled cooling of hot rolled strip : a combination of physical modeling, control problems and practical adaptation" 38 (38): 1060-1065, 1993

5 H. B. Xie, "Prediction of coiling temperature on run-out table of hot strip mill using data mining" 177 (177): 121-125, 2006

6 N. S. Samaras, "Optimized trajectory tracking control of multistage dynamic metal-cooling processes" 37 (37): 920-927, 2001

7 S. K. Biswas, "Optimal temperature tracking for accelerated cooling processes in hot rolling of steel" 7 : 327-340, 1997

8 N. Hatta, "Numerical modeling for cooling process of a moving hot plate by a laminar water curtain" 29 (29): 919-925, 1989

9 S. Guan, "Multivariable fuzzy supervisory control for the laminar cooling process of hot rolled slab" 9 (9): 348-3561, 2001

10 M. D. Leltholf, "Model reference control of runout table cooling at LTV" 66 (66): 31-35, 1989

11 박철재, "Dynamic Temperature Control with Variable Heat Flux for High Strength Steel" 제어·로봇·시스템학회 10 (10): 659-665, 2012

12 T. Oda, "Development of accurate control in hot strip mill" 81 (81): 35-40, 1995

13 A. G. Groch, "Automatic control of laminar flow cooling in continuous and reversing hot strip mills" 67 (67): 16-20, 1990

14 R. K. Kumar, "An on-line parallel controller for the runout table of hot strip mills" 9 (9): 821-830, 2001

15 L. Peng, "A note on a two-sample T test with one variance unknown" 8 (8): 528-534, 2011