Browsing by Author "Bouyahiaoui, C."

Filter results by typing the first few letters
Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    Non–interacting fuzzy control system design for distillation columns
    (2005) Maidi, M.; Diaf, M.; Khelassi, A.; Bouyahiaoui, C.
    This paper proposes a fuzzy multiloop control design for a distillation column. The interaction that occurs between the strategic distillation column variables, which represent a major constraint to construct the rules base when the fuzzy multivariable control of the distillation control is considered, are reduced by introducing a compensator in cascade with the distillation column. The introduced compensator is designed using an interaction analysis method. Thus, a complete fuzzy rule base is generated for each loop independently without domain experts. The main advantage of the proposed fuzzy multiloop strategy is that the determination of the rule base is simplified and facilitated; besides a weak level of interaction and the control stability are guaranteed. Consequently, in comparison with the conventional multiloop control based on classical PI controllers, the fuzzy multiloop control achieves better control performance
  • No Thumbnail Available
    Item
    Optimal fuzzy control to reduce energy consumption in distillation columns
    (2005) Bouyahiaoui, C.; Laaouad, F.; Khelassi, A.; Grégoriev, L.
    Distillation columns constitute a signi cant fraction of the capital invested in the re neries around the world; their control requires a major part of the total operating cost of chemical processes, if the used strategy is not adequate. This article presents the application of optimal fuzzy control to reduce the energy consumption of a Benzene-Toluene distillation column. This method is based on the determination of the speci c values of the fuzzy controller parameters such that certain performance criterion is minimised. Results of a simulation study are presented showing the potential improvement o ered by this method