Comparative performance analysis of various tuning methods in the design of PID controller

In this paper, the performance of different tuning methods of PID controller is evaluated. Tuning of PID controller parameters is necessary due to the wide applications of controllers in industry. Different tuning methods such as Empirical Ziegler-Nichols, Cohen-Coon, Chien-Hrones-Reswick and optimum tuning methods are considered. The performance of the above mentioned tuning methods are evaluated on the feedback control problem which controls the outlet temperature of heat exchanger system. Set point regulation and load disturbance rejection property of the controller are evaluated. The simulation results exhibit low overshoot and low settling time for most of the tuning rules. A comparative evaluation of the performance is carried out.