A Study on the Prediction for Rolling Force Using Radial Basis Function Network in Hot Rolling Mill

방사형기저함수망을 이용한 열간 사상압연의 압연하중 예측에 관한 연구

  • 손준식 (목포대학교 기계공학과) ;
  • 이덕만 (포항제철 기술연구소) ;
  • 김일수 (목포대학교 기계ㆍ해양시스템공학부) ;
  • 최승갑 (포항제철 기술연구소)
  • Published : 2004.12.01

Abstract

A major concern at present is the simultaneous control of transverse thickness profile and flatness in the finishing stages of hot rolling process. The mathematical modeling of hot rolling process has long been recognized to be a desirable approach to investigate rolling operating practice and the design of mill equipment to improve productivity and quality. However, many factors make the mathematical analysis of the rolling process very complex and time-consuming. In order to overcome these problems and to obtain an accurate rolling force, the predicted model of rolling force using neural networks has widely been employed. In this paper, Radial Basis Function Network(RBFN) is applied to improve the accuracy of rolling force prediction in hot rolling mill. In order to verify and analyze the performance of applied neural network the comparison with the measured rolling force and the predicted results using two different neural networks-RBFN, MLP, has respectively been carried out. The results obtained using RBFN neural network are much more accurate those obtained the MLP.

Keywords

References

  1. Jeon, E. C., and Kim, S. K., 2000, 'A Study on the Texturing of Work Roll for Temper Rolling,' Journal of the Korean Society of Machine Tool Engineers, Vol. 9, No.4, pp. 7-16
  2. Son, J. S., Kim, I. S., Kwon, Q. H., Choi, S. G., Park, C. J., and Lee, D. M., 2001, 'A study on development of setup model for thickness control in tandem cold rolling mill,' Journal of the Korean Society of Machine Tool Engineers, Vol. 10, No.5, pp. 96-103
  3. Portmann, N. F., 1995, 'Application of neural networks in rolling mill automation,' Iron and Steel Engineer, February, pp. 33-36
  4. Lu, C., Wang, X., Liu, X., Wang, G., Zhao, K., and Yuan, J., 1998, 'Application of ANN in combination with mathematical models in prediction of rolling load of the finishing stands in HSM,' Proceeding of The International Conference on Steel Rolling, Iron and Steel Institute of Japan, pp. 206-209
  5. Schlang, M., Lang, B., Poppe, T., Runkler, T., and Weinzierl, K., 2001, 'Current and future development in neural computation in steel processing,' Control Engineering Practice, Vol. 9, pp. 975-986 https://doi.org/10.1016/S0967-0661(01)00086-7
  6. Yao, X, 1996, Application of artificial intelligence for quality control at hot strip mills, Ph.D Thesis, The University of Wollongong
  7. Hagan, M. T., and Menhaj, M. B., 1994, 'Training feedforward networks with marquardt algorithm,' IEEE Transaction on Neural Networks, Vol. 5, No. 6, pp. 989-993 https://doi.org/10.1109/72.329697
  8. Poliak, E. I., 1998, 'Application of linear regression analysis in accuracy assessment of rolling force calculations,' Metals and Materials, Vol. 4, No.5, pp. 1047-1056 https://doi.org/10.1007/BF03025975