Documents disponibles écrits par cet auteur

Maximum Sensitivity Based Robust Tuning for Two-Degree-of-Freedom Proportional−Integral Controllers / V. M. Alfaro in Industrial & engineering chemistry research, Vol. 49 N° 11 (Juin 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 11 (Juin 2010) . - pp. 5415–5423 Titre : Maximum Sensitivity Based Robust Tuning for Two-Degree-of-Freedom Proportional−Integral Controllers Type de document : texte imprimé Auteurs : V. M. Alfaro, Auteur ; Vilanova, R., Auteur ; O. Arrieta, Auteur Année de publication : 2010 Article en page(s) : pp. 5415–5423 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Robust  Tuning  Integral  Controllers Résumé : A tuning method for two-degree-of-freedom (2-DoF) proportional−integral (PI) controllers for first-order-plus-dead-time (FOPDT) models is presented. It allows the designer to deal with the closed-loop control system performance−robustness trade-off specifying the lowest robustness level allowed by selecting a maximum sensitivity in the 1.4−2.0 range. In addition, a smooth performance is obtained by forcing the regulatory and servo-control closed-loop transfer functions to perform as close as possible to a target nonoscillatory dynamics. Controller tuning rules are provided for FOPDT models with normalized dead-times from 0.1 to 2.0. Comparative examples show the effectiveness of the proposed tuning method. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901617y [article] Maximum Sensitivity Based Robust Tuning for Two-Degree-of-Freedom Proportional−Integral Controllers [texte imprimé] / V. M. Alfaro, Auteur ; Vilanova, R., Auteur ; O. Arrieta, Auteur . - 2010 . - pp. 5415–5423. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 11 (Juin 2010) . - pp. 5415–5423 Mots-clés : Robust  Tuning  Integral  Controllers Résumé : A tuning method for two-degree-of-freedom (2-DoF) proportional−integral (PI) controllers for first-order-plus-dead-time (FOPDT) models is presented. It allows the designer to deal with the closed-loop control system performance−robustness trade-off specifying the lowest robustness level allowed by selecting a maximum sensitivity in the 1.4−2.0 range. In addition, a smooth performance is obtained by forcing the regulatory and servo-control closed-loop transfer functions to perform as close as possible to a target nonoscillatory dynamics. Controller tuning rules are provided for FOPDT models with normalized dead-times from 0.1 to 2.0. Comparative examples show the effectiveness of the proposed tuning method. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901617y

Proportional - integral-Derivative tuning for servo/regulation control operation for unstable and integrating processes / O. Arrieta in Industrial & engineering chemistry research, Vol. 50 N° 6 (Mars 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 6 (Mars 2011) . - pp. 3327–3334 Titre : Proportional - integral-Derivative tuning for servo/regulation control operation for unstable and integrating processes Type de document : texte imprimé Auteurs : O. Arrieta, Auteur ; R. Vilanova, Auteur ; A. Visioli, Auteur Année de publication : 2011 Article en page(s) : pp. 3327–3334 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Servo  Integrating  processes Résumé : The control of stable processes using PI/PID controllers is by now a well established and understood problem (even if new methods and approaches are continuously appearing). However, when the process has integrating or unstable characteristics the problem becomes much more difficult to manage. Several proposals have appeared in the literature presenting different approaches to tackle the problem. The procedures that have been proposed heavily concentrate on tunings for servo or regulation operation. A common drawback of such approaches is the high loss of performance when the other operation mode is used. In this paper, an approach for providing a unique tuning is presented. It combines tunings for both operation modes in such a way that the performance degradation is traded-off. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie101012z [article] Proportional - integral-Derivative tuning for servo/regulation control operation for unstable and integrating processes [texte imprimé] / O. Arrieta, Auteur ; R. Vilanova, Auteur ; A. Visioli, Auteur . - 2011 . - pp. 3327–3334. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 6 (Mars 2011) . - pp. 3327–3334 Mots-clés : Servo  Integrating  processes Résumé : The control of stable processes using PI/PID controllers is by now a well established and understood problem (even if new methods and approaches are continuously appearing). However, when the process has integrating or unstable characteristics the problem becomes much more difficult to manage. Several proposals have appeared in the literature presenting different approaches to tackle the problem. The procedures that have been proposed heavily concentrate on tunings for servo or regulation operation. A common drawback of such approaches is the high loss of performance when the other operation mode is used. In this paper, an approach for providing a unique tuning is presented. It combines tunings for both operation modes in such a way that the performance degradation is traded-off. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie101012z