Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 32722
Discrete Modified Internal Model Control for a nth-order Plant with an Integrator and Dead-time

Authors: Manato Ono, Hiromitsu Ogawa, Naohiro Ban, Yoshihisa Ishida


This paper deals with a design method of a discrete modified Internal Model Control (IMC) for a plant with an integrator and dead time. If there is a load disturbance in the input or output side of the plant, the proposed control system can eliminate the steady-state error caused by it. The disturbance compensator in this method is simple and its order is low regardless of that of a plant. The simulation studies show that the proposed method has superior performance for a load disturbance rejection and robustness.

Keywords: Internal Model Control, Smith Predictor, Dead time, Integrator.

Digital Object Identifier (DOI):

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1607


[1] O. J. Smith, "A Controller to Overcome Dead Time," ISA Journal, vol.6, Feb., 1959, pp. 28-23.
[2] K. Watanabe and M. Ito, " A process-model control for linear systems with delay, " IEEE Trans. Automatic Control, vol.AC-26, no.6, Dec., 1981
[3] K. J. Astrom, C. C. Hang and B. C. Lim, " A new smith predictor for controlling a process with an integrator and long dead-time, " IEEE Trans. on Automatic Control, vol.39, Feb., pp.343-345, 1994.
[4] Y. Ishikawa, Y. Masukake and Y. Ishida, " Discrete modified Internal Model Control for plants with an integrator and time delay, " IEICE Trans. on Fundamentals of Electronics, Communications and Computer Sciences, vol. J90-A, Aug., pp. 663-665, 2007. (In Japanese)
[5] Y. Masukake, M. Ono, H. Ogawa, and Y. Ishida, " Discrete Modified Internal Model Control using PFC for the Plants with a Time Delay, " IEEE Proc. International Conference on Computer and Automation Engineering (ICCAE 2009) , pp.98-102, March, 2009