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Document IIF

Détendeurs électroniques : régulation autonome en ligne.

On-line, auto-tuning control of electronic expansion valves.

Auteurs : BEGHI A., CECCHINATO L., RAMPAZZO M.

Type d'article : Article, Article de la RIF

Résumé

In this paper, the results of a research project aimed at deriving simple, high-performance, auto-tuning, robust control algorithms for evaporators controlled by means of EEVs (electronic expansion valves) are reported. Control design is performed by resorting to a detailed virtual prototyping environment described in Beghi and Cecchinato (2009). The proposed control scheme consists of two nested loops. In the inner loop, the plant is connected in feedback to a PID controller. It is assumed that the structure of the process model is given but its parameters are unknown. The outer loop is composed of a parameter estimator and an adaptation algorithm that updates the parameters of the PID controller on the basis of the result of a system identification procedure. Performance of the proposed controller is evaluated in the virtual prototyping environment by means of simulations.

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Pages : 1151-1161

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Détails

  • Titre original : On-line, auto-tuning control of electronic expansion valves.
  • Identifiant de la fiche : 30000572
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 34 - n. 4
  • Date d'édition : 06/2011

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