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Vol. 133, Issue 10, October 2011, pp.65-73

 

Bullet

 

Fuzzy Logic Applied to an Oven Temperature Control System

 

Nagabhushana KATTE, 1 Nagabhushan Raju KONDURU, 2Bhaskar POBBATHI and 1,2 Parvathi SIDARADDI

Department of ECE, Ballari Institute of Technology and Management, Bellary, KA, India

1 Department of Instrumentation, SK University, Anantapur 515 003, A.P., India

2 Department of Instrumentation Technology, G.U. P. G. Centre, Raichur 583 133, KA, India

E-mail: nagkatte@gmail.com

 

 

Received: 2011   /Accepted: 25 October 2011   /Published: 31 October 2011

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Abstract: The paper describes the methodology of design and development of fuzzy logic based oven temperature control system. As simple fuzzy logic controller (FLC) structure with an efficient realization and a small rule base that can be easily implemented in existing underwater control systems is proposed. The FLC has been designed using bell-shaped membership function for fuzzification, 49 control rules in its rule base and centre of gravity technique for defuzzification. Analog interface card with 16-bits resolution is designed to achieve higher precision in temperature measurement and control. The experimental results of PID and FLC implemented system are drawn for a step input and presented in a comparative fashion. FLC exhibits fast response and it has got sharp rise time and smooth control over conventional PID controller. The paper scrupulously discusses the hardware and software (developed using C language) features of the system.

 

Keywords: Fuzzy logic controller, PID, Temperature control, and Computer based control

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