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Feedback - invariant approach to time - delay estimation for performance monitoring / Christopher A. Harrison in Industrial & engineering chemistry research, Vol. 51 N° 26 (Juillet 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 26 (Juillet 2012) . - pp. 9094-9100 Titre : Feedback - invariant approach to time - delay estimation for performance monitoring Type de document : texte imprimé Auteurs : Christopher A. Harrison, Auteur ; S. Joe Qin, Auteur Année de publication : 2012 Article en page(s) : pp. 9094-9100 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Surveillance  Feedback Résumé : A simple time-delay estimation approach that requires temporarily retuning the existing PID controller is presented. Closed-loop output data are fitted with autoregressive moving average models at two different controller tunings. The time delay is determined by using the feedback-invariance principle that the closed-loop impulse response coefficients do not change inside the time-delay window. This approach requires no intervention to plant operation and does not estimate the open-loop process model but the time delay only. The estimated time delay is particularly suitable for use in control performance monitoring. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26107465 [article] Feedback - invariant approach to time - delay estimation for performance monitoring [texte imprimé] / Christopher A. Harrison, Auteur ; S. Joe Qin, Auteur . - 2012 . - pp. 9094-9100. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 26 (Juillet 2012) . - pp. 9094-9100 Mots-clés : Surveillance  Feedback Résumé : A simple time-delay estimation approach that requires temporarily retuning the existing PID controller is presented. Closed-loop output data are fitted with autoregressive moving average models at two different controller tunings. The time delay is determined by using the feedback-invariance principle that the closed-loop impulse response coefficients do not change inside the time-delay window. This approach requires no intervention to plant operation and does not estimate the open-loop process model but the time delay only. The estimated time delay is particularly suitable for use in control performance monitoring. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26107465