Fuzzy-PID Controller for Coupled Two Tank Interacting System

The liquid level controlling is an interesting aspect in control engineering. Coupled tanks are widely used in various industries for intermediate storage and have various inputs and outputs. The control action has to be fast and also accurate. The mannerof controlling a MIMO is clashing with the SISO. In two tank coupled interacting system control strategy is not like a SISO. A conventional PID sometime has constraints like overshoot, stability. Designing of mathematical model for various two tank interacting system is facilitated for the simulation study. In this paper intends to give a detail simulation study of Fuzzy PID controller to control various 2 tank systems. The designed Fuzzy PID is compared to the conventional PID controller. The transient responses of these systems are studied for the slightest disturbance given to the control system. Simulation of the controller is done in Matlab which is shown and described.