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A simple non‐minimum phase zero's predictor for open‐loop unstable processes
Author(s) -
Nasution Anggi Arifin,
Jeng JyhCheng,
Huang HsiaoPing
Publication year - 2011
Publication title -
asia‐pacific journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.348
H-Index - 35
eISSN - 1932-2143
pISSN - 1932-2135
DOI - 10.1002/apj.580
Subject(s) - control theory (sociology) , robustness (evolution) , internal model , open loop controller , model predictive control , minimum phase , simple (philosophy) , smith predictor , mathematics , computer science , closed loop , phase (matter) , control (management) , engineering , control engineering , physics , pid controller , artificial intelligence , temperature control , biochemistry , chemistry , philosophy , epistemology , quantum mechanics , gene
This paper proposes a Smith‐type predictive compensator for open‐loop unstable processes that have non‐minimum phase zero. It has been well‐recognized that this type of predictor reported in the literature encounters internally unstable problem when applied to an open‐loop unstable process. To satisfy the internal stability, the proposed predictor utilizes the partial internal model principle. And, the controller is designed by internal mode control principal to have H 2 optimal performance. Simulation examples are presented to illustrate that the proposed control scheme can give satisfactory performance and robustness. Copyright © 2011 Curtin University of Technology and John Wiley & Sons, Ltd.