Vol. 121, Issue 10, October 2010, pp.56-67

Application of Genetic Algorithm for Tuning of a PID Controller for a Real Time Industrial Process

¹S. M. Giri RAJKUMAR, ²Atal. A. KUMAR, ³N. Anantharaman

¹Department of Electronics and Instrumentation Engineering, School of Electrical and Electronics Engineering, SASTRA University, Thanjavur-613402, India

²SASTRA University, Thanjavur - 613 402, India,

³Department of Chemical Engineering, National Institute of Technology,
Tiruchirappalli - 620 015, India

E-mail: smgirirajkumar@gmail.com

Received: 14 September 2010   /Accepted: 18 October 2010   /Published: 26 October 2010

Abstract: PID (Proportional Integral Derivative) controller has become inevitable in the process control industries due to its simplicity and effectiveness, but the real challenge lies in tuning them to meet the expectations. Although a host of methods already exist there is still a need for an advanced system for tuning these controllers. Computational intelligence (CI) has caught the eye of the researchers due to its simplicity, low computational cost and good performance, makes it a possible choice for tuning of PID controllers, to increase their performance. This paper discusses in detail about Genetic Algorithm (GA), a CI technique, and its implementation in PID tuning for a real time industrial process which is closed loop in nature. Compared to other conventional PID tuning methods, the result shows that better performance can be achieved with the proposed method.

Keywords: PID, CI, GA, Real time system

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