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By combining several existing modified Smith predictor structures, presented in a literature review, a generalised form of the Smith predictor is proposed. From this structure, excellent servo and regulator responses can be obtained by specifying three controller dynamic elements. Two new modified Smith predictor structures are presented with their associated tuning rules. The results of the simulations indicate that the two new designs give better overall responses than the original Smith predictor.
Sourdille, Pauline and O'Dwyer, Aidan : New modified Smith predictor designs. Proceedings of the IFAC Workshop on Time Delay Systems, INRIA, Rocquencourt, France, September.