Design and analysis of FO PID conttrollers in Non-Linear process

This paper presents the analysis of Fractional Order Proportional Integral and Derivative (FO PID) controller for Non-Linear System. It is inferred that conventional tuning methods gives unsatisfactory response when used for processes experiencing negative destabilizing effects due to strong nonlinearities. Henceforth the goal of this research is to obtain optimal parameters using FO PID controllers. It shows better disturbance rejection and has more degree of freedom in designing the controllers. In Non-Linear systems like conical tank, the level changes with respect to cross sectional area, thus making it highly non-linear. Thus the controller designing for conical tank is tedious and complex process due to nonlinear behavior. On comparing with conventional counterpart this method provides highly stable and reliable controller.