COMPARATIVE ANALYSIS OF PD CLASSICAL CONTROL AND PD FUZZY CONTROL IN TWO LIQUID LEVEL TANKS

This paper deals with comparative study of two structures of two liquid level control, that are PD fuzzy control and PD control. The classical control theory which relies on the mathematical model of the underlining system has been successfully applied to the control of a large variety of simple plant, therefore the PD fuzzy control that has two input variables and one output variable based on Mamdani inference system using 49 full rules base was introduced to compare it with the conventional one. The main idea from using PD fuzzy control is to build a model of an expert operator who is capable of controlling the plant without thinking in terms of mathematical model. A comparison well detailed in the application of these two control strategies on liquid level problem is presented [4].