화학공학소재연구정보센터
Korean Journal of Chemical Engineering, Vol.23, No.2, 167-170, March, 2006
Bilinear model predictive control of grade change operations in paper production plants
E-mail:
In this work the bilinear model predictive control method is applied to control the grade change operations in paper production plants. Because of the high nonlinearity of the grade change processes, control of the grade change operations has been performed manually by experienced engineers in the plants. In some cases the bilinear model can be very effective to represent nonlinear processes. In this study an bilinear model for paper plants is identified first. It is found that the bilinear model tracks the plant without significant discrepancy. Based on the multivariable bilinear plant model the optimal input variables are computed using the one-step ahead prediction method. Even for frequent changes in paper grades the bilinear model predictive control scheme exhibits good control performance.
  1. Aganovic Z, Gajic Z, Journal of Optimization Theory and Applications, 84, 273 (1995) 
  2. Fortescue TR, Kershenbaum LS, Ydstie BE, Automatica, 17, 831 (1981) 
  3. Goodwin GC, Sin KS, Adaptive filtering prediction and control, Prentice-Hall, New Jersey, USA, p. 50-67 (1984)
  4. Ljung L, System identification - theory for the user, Prentice-Hall, New Jersey, USA, p. 303-326 (1987)
  5. Mohler RR, Nonlinear systems volume II: applications to bilinear control, Prentice Hall, New Jersey, USA, p. 33-50 (1991)
  6. Murphy TF, Chen SC, “Transition control of paper-making processes: paper grade change,” Control Applications, 1999. Proceedings of the 1999 IEEE International Conference on control Applications, 2, 1278 (1999)
  7. Oh SC, Yeo YK, Korean J. Chem. Eng., 12(4), 472 (1995)
  8. Skoglund A, Brundin A, Nord. Pulp Paper Res J, 15, 183 (2002)
  9. Tang W, Shi SJ, Wang MX, Ind. Eng. Chem. Res., 41(17), 4318 (2002) 
  10. Wei KC, Pearson AE, IEEE Trans. Autom. Control, AC-23, 1020 (1978) 
  11. Yeo YK, Williams DC, Ind. Eng. Chem. Res., 26, 2267 (1987) 
  12. Yeo YK, Ryu JY, Yi SC, Korean J. Chem. Eng., 22(1), 17 (2005)
  13. Yeo YK, Hwang KS, Kim YG, Kang H, J. Chem. Eng. Jpn., 38(2), 120 (2005)