Modeling of Fractional Order PID Controller and Study the Application of Couple Spherical Tank Level Control

In this topic a fractional order proportional Integral Derivative Controller is proposed to control the flow of liquid in a couple tank system which is very useful in petrochemical, water treatment and paper industries. Here spherical tank is used due to its higher storage capacity. Due to its variation in the surface it adds more non-linearity to the system. Finally a comparison is done between conventional PID and FOPID then rise time., peak time, settling time and peak overshoot is analyzed and better performance is measured out.