Comparison of Tuning Methods of PID Controllers for FOPTD System

Abstract: Temperature Measurement is one of the major controlling parameter in Industries like Level, Flow, Pressure etc. One of such Temperature process es is taken in this paper and Modelling of the Process has been carried out and Transfer function of the Single Input Single Output (SISO) system. For the particular temperature process controller transfer function has been determined and control parameters such as Proportional Gain, Integral Time and Derivative time are identified. They are numerous methods of developing a Proportional Integral and Derivative (PID) Controller, amongst them some methods are adopted in this paper and Comparisons of Time Do main specifications of those controllers has been carried out and Performance Index metrics such as Integral Absolute Error (IA E), Integral Square Error (ISE), Integral Time Absolute Error (ITA E), Mean Square Error (M SE) of those controllers are also compared. The Results are obtained fro m above comparisons and the optimu m controller has been identified.

Keywords: PID controller, FOPTD, IA E, ITA E, ISE, M SE.