Application and Implementation of Fuzzy Logic Controller (FLC) for Feed Chemical Concentration Process

This paper has presented application and implementation of fuzzy logic controller (FLC) for feed chemical concentration process. It is desired to improve the chemical composition of a feed chemical concentration control system whose initial response was undesirable. In order to achieve the objective of the paper, the dynamic model of a typical chemical concentration with a feed-flow valve is obtained and presented in the form of a transfer function. A fuzzy logic controller is designed using fuzzy block of the Simulink. Simulations are performed in MATLAB/Simulink environment considering two cases. The first simulation was performed considering the case where the designed controller has not been added to the closed-loop. The second simulation was performed considering the case where the FLC has been included in the close-loop. The Simulation results obtained showed that the output composition performance of the process was largely improved and maintain steady state within the acceptable percentage of the output composition