A performance comparison of classical PID, Type-1 and Type-2 fuzzy controller in a three tank level control system

Abstract

This paper investigates the usage of Conventional PID controller, Type-1 and Type-2 fuzzy controller in controlling the liquid level in the three tank level control system. All real systems exhibit non-linear nature, thus conventional controllers are not always able to provide good and accurate results. Fuzzy logic control (FLC) can be used to obtain more precise results. In this paper a model for simulation is designed and all the assumptions are made before the development of the model. Analysis is done through computer simulation using Matlab/Simulink toolbox. Moreover, the behavior of the system in terms of time response (e.g., settling time, a certain rise-time, overshoot, integral of absolute error (IAE) and integral time of absolute error (ITAE) is studied and the results for the case of utilizing FLCs is compared with the case of employing PID controller.