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Simple nonlinear predictive control strategy for chemical processes using sparse kernel learning with polynomial form / Yi Liu in Industrial & engineering chemistry research, Vol. 49 N° 17 (Septembre 1, 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 17 (Septembre 1, 2010) . - pp 8209–8218 Titre : Simple nonlinear predictive control strategy for chemical processes using sparse kernel learning with polynomial form Type de document : texte imprimé Auteurs : Yi Liu, Auteur ; Yanchen Gao, Auteur ; Zengliang Gao, Auteur Année de publication : 2010 Article en page(s) : pp 8209–8218 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Nonlinear  predictive  control  Polynomial  form. Résumé : A simple nonlinear control strategy using sparse kernel learning (SKL) with a polynomial kernel form is presented and applied to chemical processes. The nonlinear process is first identified by SKL with a polynomial kernel, and then a predictive control performance index is formulated. This index is characterized as an even-degree polynomial function of the manipulated input and has the benefit that the input can be separated from the index because of its special structure. Consequently, the optimal manipulated input can be efficiently obtained by solving a simple root problem of an odd-degree polynomial equation. Moreover, the control parameter directly relates to its performance and can be tuned in a guided manner. All these attributes result in a practicable solution for real-time process control. The novel controller is applied to two chemical processes to evaluate its performance. The obtained results show the superiority of the proposed method compared to a well-tuned proportional−integral−derivative controller in different situations. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901548u [article] Simple nonlinear predictive control strategy for chemical processes using sparse kernel learning with polynomial form [texte imprimé] / Yi Liu, Auteur ; Yanchen Gao, Auteur ; Zengliang Gao, Auteur . - 2010 . - pp 8209–8218. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 17 (Septembre 1, 2010) . - pp 8209–8218 Mots-clés : Nonlinear  predictive  control  Polynomial  form. Résumé : A simple nonlinear control strategy using sparse kernel learning (SKL) with a polynomial kernel form is presented and applied to chemical processes. The nonlinear process is first identified by SKL with a polynomial kernel, and then a predictive control performance index is formulated. This index is characterized as an even-degree polynomial function of the manipulated input and has the benefit that the input can be separated from the index because of its special structure. Consequently, the optimal manipulated input can be efficiently obtained by solving a simple root problem of an odd-degree polynomial equation. Moreover, the control parameter directly relates to its performance and can be tuned in a guided manner. All these attributes result in a practicable solution for real-time process control. The novel controller is applied to two chemical processes to evaluate its performance. The obtained results show the superiority of the proposed method compared to a well-tuned proportional−integral−derivative controller in different situations. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901548u