Modeling and implementation of various controllers used for Quadruple-Tank

This paper deals with the simulation and modelling of a Quadruple-Tank interacting system using various controllers. Quadruple-Tank is a one kind of MIMO (Multiple Input Multiple Output) system. It is not possible to determine all the parameters used in Multi variable systems. The major issues in a multivariable process are that loop interaction can arise and causes difficulty in design of feedback controllers. These problems can be solved by using various controllers like PID and FUZZY-PID. The Quadruple-Tank process consists of four tanks and two pumps. The main aim of Quadruple-Tank process is the flexible positioning one of the multivariable zeros on left half of `s' plane. The simulation result shows the effective output of various controllers used in this work.