Abstract
An IMC controller is designed for two input and two output (TITO) processes with dead time where the closed-loop time constant is varied depending on the process operating condition. For a TITO process, proper decoupling can minimize the loop interaction. Here, we develop an inverted decoupler so that the TITO process can be decoupled into two SISO processes. Each SISO process is considered to be a first-order process with dead time (FOPDT) and IMC controller is designed for each FOPDT process. To make the controller structure proper, we incorporate a first-order filter with closed-loop time constant (λ) which is the only tunable parameter. Instead of a fixed value, dynamic nature is incorporated in selecting the value of λ based on a simple mathematical relation. Superiority of the proposed IMC controller is verified through performance comparison with the well-known multiloop tuning relations.
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References
Seborg, D.E., Edgar, T.F., Mellichamp, D.A.: Process Dynamics and Control. Wiley, New York (2004)
Bequett, W.B.: Process Control Modeling Design and Simulation. Prentice-Hall, New Jersey (2003)
Wang, Q.G., Zou, B., Lee, T.H., Bi, Q.: Auto tuning of multivariable PID controllers from decentralized relay feedback. Automatica 33(3), 319–330 (1997)
Wang, Q.G., Huang, B., Guo, X.: Auto-tuning of TITO decoupling controllers from step tests. ISA Trans. 39(4), 407–418 (2000)
Hu, Z.R., Li, D.H., Wang, J., Xue, F.: Analytical design of PID decoupling control for TITO processes with time delays. J. Comput. 6(6), 1064–1070 (2011)
Maghade, D.K., Patre, P.M.: Decentralized PI/PID controllers based on gain and phase margin specifications for TITO processes. ISA Trans. 51(4), 550–558 (2012)
Skogestad, S.: Simple analytic rule for model reduction and PID controller tuning. J. Process Control 13(4), 291–309 (2003)
Shamsuzzoha, M., Lee, M.: IMC-PID controller design for improved disturbance rejection of time-delayed processes. Ind. Eng. Chem. Res. 46(7), 2077–2091 (2007)
Shamsuzzoha, M., Lee, M.: PID controller deign for integrating process with time delay. Korean J. Chem. Eng. 25(4), 637–645 (2008)
Rao, A.S., Rao, V.S.R., Chidambaram, M.: Direct synthesis-based controller design for integrating process with time delay. J. Franklin Inst. 346(1), 38–56 (2009)
Paul, P.K., Dey, C., Mudi, R.K.: Design of fuzzy based IMC-PID controller for IPD process. Proc. IEEE Int. Symp. Comput. Bus. Intell. 30, 111–114 (2013)
Zhao, Z., Liu, Z., Zhang, J.: IMC-PID tuning method based on sensitivity specification for process with time-delay. J. Cent. South Univ. Tech. 18, 1153–1160 (2011)
Wood, R.K., Berry, M.W.: Terminal composition control of a binary distillation column. Chem. Eng. Sci. 28(9), 1707–1717 (1973)
Luyben, W.L.: Simple method for tuning SISO controllers in multivariable systems. Ind. Eng. Chem. Process Des. Dev. 25, 654–660 (1986)
Vu, T.N.L., Lee, J., Lee, M.: Design of multi-loop PID controllers based on the generalized IMC-PID method with Mp criterion. Int. J. Control Autom. Syst. 5(2), 212–217 (2007)
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Paul, P.K., Dey, C., Mudi, R.K. (2016). Design of IMC Controller for TITO Process with Dynamic Closed-Loop Time Constant. In: Satapathy, S., Raju, K., Mandal, J., Bhateja, V. (eds) Proceedings of the Second International Conference on Computer and Communication Technologies. Advances in Intelligent Systems and Computing, vol 381. Springer, New Delhi. https://doi.org/10.1007/978-81-322-2526-3_21
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DOI: https://doi.org/10.1007/978-81-322-2526-3_21
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