Performance recovery of intelligent digital redesign for observer‐based output feedback under immeasurable premise variables
Ji Hyun Moon, Ho Jae Lee · IET Control Theory and Applications · 2015
This study discusses an intelligent digital redesign (IDR) for observer‐based output‐feedback controllers in Takagi–Sugeno form under immeasurable premise variables. A delta operator that asymptotically connects an analogue control system with its discrete‐time model is adopted. The condition for the IDR problem with stability is proposed in terms of matrix inequality. The authors show that the proposed IDRed sampled‐data controller recovers the analogue control performance from the perspective of the closed‐loop trajectory under the fast sampling limit.