A Self-Tuning Control Algorithm in the Presence of Plant-Model Order Mismatch

A self-tuning control algorithm in the presence of plant-model order mismatch is presented. The bounded-input bounded-output stability is proven. The robustness against plant-model order mismatch is achieved by using a normalized parameter estimation scheme with a dead zone. The algorithm with an incremental predictor produces an integral control term in a natural way, and then the offset is avoided. A simulation example illustrates the main features of the algorithm.