Abstract
The two degree of freedom R-S-T digital controller is becoming a standard for computer control in industry. The paper presents the methodology for the design of the R-ST controller which involves identification of the plant model from data combined with a robust control design. The perfonnances of the controller can be fwther enhanced by plant model identification in closd loop and re-tuning of the controller. For large parameter variations adaptation has to be considered for preserving the perfonnances. Software packages are available for the design, implementation and commissioning of the R-S-T digital controllers. The methodology is illustrated by its application to the control of deposited zinc in hot-dip galvanizing at SOLLAC (Florange, France)
Published Version
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