[article] 
inIndustrial & 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