Premium
Robust Smith‐predictor controller for uncertain delay systems
Author(s) -
Lee T. H.,
Wang Q. G.,
Tan K. K.
Publication year - 1996
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690420415
Subject(s) - control theory (sociology) , corollary , robust control , smith predictor , norm (philosophy) , robustness (evolution) , bounded function , stability (learning theory) , controller (irrigation) , computer science , mathematics , mathematical optimization , control (management) , control system , control engineering , engineering , pid controller , temperature control , artificial intelligence , machine learning , agronomy , pure mathematics , law , mathematical analysis , chemistry , biology , biochemistry , political science , electrical engineering , gene
Necessary and sufficient conditions for the robust stability and performance of the Smith‐predictor controller, modeled under a norm‐bounded uncertainty, are given in a general formulation. In addition, a practical stability condition is obtained as a special corollary of the main results. These conditions provide useful and practical guidelines for the development of a systematic robust design method. In particular, an application is developed for the robust control of first‐order deadtime systems with simultaneous uncertainties in all three parameters of the model. A simulation example and the results of a case study on the robust level control of a coupled‐tanks apparatus are provided for illustration.