Korean Journal of Chemical Engineering

, Volume 14, Issue 4, pp 245–248 | Cite as

Modified dynamic matrix control

  • Su Whan Sung
  • In-Beum Lee
Article

Abstract

DMC (Dynamic Matrix Control) has been used successfully in industry for the last decade. It can deal with constraints and unusual dynamic behavior directly. It also shows a good control performance for the servo problem. Relatively, it can’t reject disturbances systematically. We propose a modified DMC method to control the regulatory process more efficiently. The proposed DMC method makes the control output by subtracting the estimated disturbance from the control output of the original DMC. Here, the disturbance is estimated by a new disturbance estimator. It shows better control performances than the original DMC.

Key words

DMC Estimator FIR Regulation 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Cutler, C. R. and Ramaker, B. L., “Dynamic Matrix Control-A Computer Control Algorithm”, Proc. Am. Control Conf., paper WP5-B (1980).Google Scholar
  2. Freedman, R. W. and Bhatia, A., “Adaptive Dynamic Matrix Control: On-line Evaluation of the DMC Model Coefficients”, Proc. Am. Control Conf., paper WAF-11 (1985).Google Scholar
  3. Garcia, C. E. and Morari, M., “Internal Model Control. 1. A Unifying Review and Some New Results”,Ind. Eng. Chem Process Des. Dev.,21, 308 (1982).CrossRefGoogle Scholar
  4. Garcia, C. E. and Morshedi, A. M., “Quadratic Programming Solution of Dynamic Matrix Control (QDMQ)”,Chem. Eng. Comm.,46, 73 (1986).CrossRefGoogle Scholar
  5. Georgiou, A., Georgakis, C. and Luyben, W. L., “Nonlinear Dynamic Matrix Control for High-Purity Distillation Columns”,AIChE J.,34, 1287 (1988).CrossRefGoogle Scholar
  6. Lundström, P., Lee J. H., Morari, M. and Skogestad, S., “Limitations of Dynamic Matrix Control”,Computers Chem. Engng.,19, 409 (1995).CrossRefGoogle Scholar
  7. Maiti, S. N., Kapoor, N. and Saraf, D. N., “Adaptive Dynamic Matrix Control of pH”,Ind. Eng. Chem. Res.,33, 641 (1994).CrossRefGoogle Scholar
  8. Maurath, P. R., Mellichamp, D. A. and Seborg, D. E., “Predictive Controller Design for Single-Input/Single-Output (SISO) Systems”,Ind. Eng. Chem. Res.,27, 956 (1988).CrossRefGoogle Scholar
  9. Seborg, D. E., Edgar, T. F. and Mellichamp, D. A., “Process Dynamics and Control”, Wiley, New York (1989).Google Scholar
  10. Wellons, M. C. and Edgar, T. F., “The Generalized Analytical Predictor,”Ind. Eng. Chem. Res.,26, 1523 (1987).CrossRefGoogle Scholar
  11. Wood, R. K. and Berry, M. W., “Terminal Composition Control of a Binary Distillation Column”,Chem. Eng. Sci.,28, 1707 (1973).CrossRefGoogle Scholar

Copyright information

© Korean Institute of Chemical Engineering 1997

Authors and Affiliations

  • Su Whan Sung
    • 1
  • In-Beum Lee
    • 1
  1. 1.Department of Chemical Engineering, School of Environmental EngineeringPohang University of Science and TechnologyPohangKorea

Personalised recommendations