PI-Like Interval Type-2 Fuzzy Logic Control Based Social Spider Optimization for distillation column

In this paper, an intelligent control using Mamdani type PI-Like Interval Type-2 Fuzzy Logic Controller based Social Spider Optimization (SSO) algorithm (IT2PIFLC-SSO) is designed. This controller is used to control a binary trays distillation column. Two models of SIMO and MIMO are used. Gains of the controllers are tuned using SSO algorithm where the reflex flow rate and vapor flow rate are manipulated as variables to reach maximum purity for overhead product and minimum impurity for bottom product with minimum overshoot, minimum settling time and minimum error. The controlled signal is the molar fraction of distillate and bottom. Integral Time Absolute Error (ITAE) is employed as an objective function to measure the improvement in time.Simulation results have shown that the proposed IT2FLC-SSO works efficiently with no disturbance and with the effect of disturbance.