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A closed loop control system incorporating fuzzy logic has been developed for a class of maintenances of temperature of a heating chamber. A unique fuzzy logic controller (FLC) structure with an efficient realization and a small rule base that can be easily implemented in existing industrial controllers was proposed. The performance of this system has been measured in various environmental conditions such as compensating for thermo mass changes in the system, dealing with unknown and variable delays, operating at different temperature setpoints without retuning, etc. It is achieved by implementing, in FLC, a classical control strategy and an adaptation mechanism to compensate for the dynamic changes in the system. This paper deals with the detail issue for the improvement of microprocessor based design and implementations of the heating chamber temperature maintenances on practical demand and finally focuses the performance of this system to other environmental conditions in various systems.
Date of Conference: 20-22 Dec. 2008