Design and Implementation of Conventional and Adavanced Controllers for Level Control of Coupled Tank Process

In many chemical and food processing industries, liquid level control and flow control between tanks plays a major role. This paper deals with mathematical modelling and level control of coupled tank process with SISO configuration. Conventional and advanced controllers like PI, fuzzy, neuro and neuro-fuzzy are designed and simulated for this system using MATLAB/Simulink. Simulation results are presented and compared. Servo response with PI controller is oscillatory, whereas with advanced controllers is smooth. It is observed from the results that the designed fuzzy controller is capable of faster setpoint tracking than other controllers for this nonlinear system.