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Normalized decoupling / Wen-Jian Cai in Industrial & engineering chemistry research, Vol. 47 N°19 (Octobre 2008) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 47 N°19 (Octobre 2008) . - p. 7347–7356 Titre : Normalized decoupling : a new approach for MIMO process control system design Type de document : texte imprimé Auteurs : Wen-Jian Cai, Auteur ; Wei Ni, Auteur ; Mao-Jun He, Auteur Année de publication : 2008 Article en page(s) : p. 7347–7356 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Decoupling  control  system  Two-input  process  Two-output  process Résumé : In this paper, a novel engineering oriented decoupling control system design method for two-input, two-output processes is presented. By employing the concept of integrated error, gain and phase changes of a transfer function when other loops are closed can be uniquely determined. Consequently, an equivalent transfer function matrix for a closed-loop control system can be obtained and its relations with the original process transfer function matrix are derived. On the basis of the equivalent transfer function matrix, parameters of a stable, proper, and causal ideal diagonal decoupler can then be easily determined by proper parameter assignments of the decoupled transfer function matrix elements. The method avoids the drawbacks of existing decoupling schemes, is very simple and can be easily understood, and can be implemented by field control engineers. An industrial process is employed to demonstrate its simplicity in design and effectiveness in control system performance. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie8006165 [article] Normalized decoupling : a new approach for MIMO process control system design [texte imprimé] / Wen-Jian Cai, Auteur ; Wei Ni, Auteur ; Mao-Jun He, Auteur . - 2008 . - p. 7347–7356. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 N°19 (Octobre 2008) . - p. 7347–7356 Mots-clés : Decoupling  control  system  Two-input  process  Two-output  process Résumé : In this paper, a novel engineering oriented decoupling control system design method for two-input, two-output processes is presented. By employing the concept of integrated error, gain and phase changes of a transfer function when other loops are closed can be uniquely determined. Consequently, an equivalent transfer function matrix for a closed-loop control system can be obtained and its relations with the original process transfer function matrix are derived. On the basis of the equivalent transfer function matrix, parameters of a stable, proper, and causal ideal diagonal decoupler can then be easily determined by proper parameter assignments of the decoupled transfer function matrix elements. The method avoids the drawbacks of existing decoupling schemes, is very simple and can be easily understood, and can be implemented by field control engineers. An industrial process is employed to demonstrate its simplicity in design and effectiveness in control system performance. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie8006165