Discrete Modified Internal Model Control for a nth-order Plant with an Integrator and Dead-time

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.

Authors:

• Manato Ono
• Hiromitsu Ogawa
• Naohiro Ban
• Yoshihisa Ishida

Keywords:

• Internal Model Control
• Smith Predictor
• Dead time
• Integrator.

References:

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Proc. International Conference on Computer and Automation
Engineering (ICCAE 2009) , pp.98-102, March, 2009