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Étude de la règle de fixation des poids pour l’algorithme de contrôle par logique floue basé sur les poids, utilisé dans les systèmes de conditionnement d’air à détente directe.

Investigation on weights setting rule for weights-based fuzzy logic control algorithm utilized in direct expansion air-conditioning systems.

Auteurs : SHAO J., ZHONG Z., XU X.

Type d'article : Article de la RIF

Résumé

Both temperature control and humidity control are important in buildings. However, usually only temperature is controlled in small and medium-sized buildings using direct expansion (DX) air-conditioning (A/C) systems, while dehumidification is a by-product of cooling, and indoor humidity is in an uncontrolled state. Weights-based fuzzy logic control algorithm (WBFLCA) is a novel fuzzy control algorithm that can be applied to DX A/C systems with good simultaneous temperature and humidity control performance. However, the setting of weight values for WBFLCA is still highly dependent on expert experience and lacks a systematic optimization theory, which hinders the application of WBFLCA. In order to establish a weights setting rule for WBFLCA used in DX A/C systems, a coupled control simulation model is built in this paper to simulate the effect of simultaneous control of temperature and humidity with all 16 basic weights distribution mode combinations. All the 16 combinations are also experimentally tested on an experimental DX A/C system to reveal the control performance of different combinations in a real system. Four of them with good control performance are found. The reasons why these four combinations are good are also analyzed in this paper. Based on the simulation and experimental results, the weights setting rule of WBFLCA applicable to the simultaneous temperature and humidity control of DX A/C systems are summarized. The approach proposed in this paper of finding appropriate pattern combinations from the basic weights distribution patterns has the potential to be applied to solve other decoupling control problems as well.

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Format PDF

Pages : 71-83

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Détails

  • Titre original : Investigation on weights setting rule for weights-based fuzzy logic control algorithm utilized in direct expansion air-conditioning systems.
  • Identifiant de la fiche : 30029615
  • Langues : Anglais
  • Sujet : Technologie
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 138
  • Date d'édition : 06/2022
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2022.03.005
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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