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Vol. 126, Issue 3, March 2011, pp.101-109

 

Bullet

 

An Integrated Expert Controller for the Oven Temperature Control System

 

1Nagabhushana KATTE, 2Nagabhushan Raju KONDURU,

3Bhaskar POBBATHI, and 3Parvathi SIDARADDI

 

1Department of EC Engg., Ballari Institute of Tech. & Management, Bellary-583 104, India

2Department of Instrumentation, Sri Krishnadevaraya University, Anantapur 515 003, India

3Department of Instrumentation Technology, Gulbarga University P. G. Centre,

Raichur - 584 133, India

Tel.: 91-8554-255744

E-mail: knrbhushan@yahoo.com, nagkatte@gmail.com

 

 

Received: 4 February 2011   /Accepted: 17 March 2011   /Published: 29 March 2011

 

Abstract: Paper presents a methodology for design of integrated fuzzy logic based an expert controller and its implementation for a real time oven temperature control system. Integrated expert controller (IEC) is composed by cascading fuzzy logic controller with improved PID controller. Wherein, fuzzy controller evaluates the supplemental control actions and PID evaluates the final control actions. Temperature measurement of the oven with a precision of 16-bits is achieved through Pt100, instrumentation amplifier, and A/D converter and fuzzy plus PID computed control actions are given to the actuator via D/A converter (16-bits) and PWM generator. Paper experimentally demonstrated the performance of IEC for oven temperature control application. The performance indexes of the system are presented in a comparative fashion with the conventional PID and expert controllers. Control algorithms are developed using C language.

 

Keywords: Integrated expert controller, Fuzzy logic, PID, Temperature, Computer based control

 

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