Abstract
Abstract The paper presents efficient fuzzy control structures for distillation columns. The considered controlled process is a distillation column used for separation of the binary mixture benzene - toluene. For control of the distillation column, the control strategy is developed that uses fuzzy controllers in the control loop with main and auxiliary controllers. Efficiency of the designed control structure is studied using simulation experiments. The complex control structure with fuzzy controllers is compared with the simple fuzzy control structure, conventional PID control structure, and the complex control structure with conventional main and auxiliary PID controllers in the set point tracking and the disturbance rejection problems. The results confirm improvement of the distillation column performance using the developed complex fuzzy control structure.
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