Design And Implementation of Skogestad PID Controller For Interacting Spherical Tank System

Control of liquid level in the interacting nonlinear spherical tank due to the variation in the area of cross section with height is the basic problem in the industries. This paper presents the controlling of nonlinear interacting system using Skogestad PID controller. The system of two tanks is considered to be a second order system. Skogestad Proportional Integral Derivative Controller is being developed for the control of the liquid in the nonlinear interacting spherical tank system. The simulation studies were carried out for this nonlinear process.