Set-point tracking capability comparison of PI and PID controllers for a FOPDT process model

This paper analyses one of the most important control system design issue, the controller performance. A blending process which can be modeled as First Order plus Dead Time is selected to design closed loop with PI and PID controllers. The tuning of the controller parameters have been done using Ziegler Nichols and Tyreus Luyben tuning techniques. The performance of the PI and PID controllers have been evaluated by comparing set-point tracking and disturbance rejection capabilities.