Robust Smith Predictor Design via Uncertainty Quantification: Application to a Reclaimer
نویسنده
چکیده
The Smith predictor is a type of compensator that eliminates a time-delay occurred in industrial processes. Recently, the robustness in of the Smith predictor has been great issue. In this paper, a robust Smith predictor design is investigated, in this paper, the system identification method is used to find out a nominal model and its uncertainty bound of the nominal model is quantified in the frequency domain through the uncertainty quantification method. In addition, a robust criterion for the Smith predictor is also derived. With the obtained nominal model, uncertainty bound and the robust criterion derived, a robust Smith predictor is designed. This designed robust Smith predictor is applied to a reclaimer, which has a large output time-delay and is used in the raw yard of a steel plant. The performance of the designed robust Smith predictor is verified through the experiments and the simulations. Copyright © 1999 IFAC.
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