| Titre : | A new unified approach to valve stiction quantification and compensation (2009) |
| Auteurs : | Lee Zhi Xiang Ivan, Auteur ; S. Lakshminarayanan, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 48 N° 7, Avril 2009) |
| Article en page(s) : | pp. 3474–3483 |
| Note générale : | Chemical engineering |
| Langues : | Anglais |
| Tags : | Valve stiction Control loops Hammerstein identification approach |
| Résumé : | Satisfactory control loop performance has always been a vital objective in process industries for economic reasons. However, unsatisfactory performance may prevail, of which valve stiction is a common culprit. In this work, a new unified approach is introduced to quantify valve stiction in control loops and then compensate for it. The newly proposed stiction quantification method uses a one-parameter stiction model and is based on a modified Hammerstein identification approach. In conjunction with the stiction quantification algorithm, a novel compensation technique that adds a constant amplitude signal to the valve input signal is presented. The effectiveness of the proposed scheme is demonstrated using simulation examples. |
| En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie800961f |
