文档介绍：A Stable Self-Tuning Fuzzy Logic Control System for Industrial Temperature Regulation
Zhiqiang Gao and Thomas A. Trautzsch James G. Dawson
Department of Electrical Engineering Setech Inc.
Cleveland State University 903 Industrial Dr.
Cleveland, Ohio 44115 Murfreesboro, TN 37129
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Abstract
A closed loop control system incorporating fuzzy logic has Manipulated Controlled
been developed for a class of industrial temperature control Variable PROCESS variable
temperature
problems. A unique fuzzy logic controller (FLC) structure with AIR
WATER
an efficient realization and a small rule base that can be easily ELECTRICITY
SSR RTD
implemented in existing industrial controllers was proposed. It CONTROL Contactor MEASURING Thermocouple
ELEMENT MEANS
was demonstrated in both software simulation and hardware Valve Thermistor
test in an industrial setting that the fuzzy logic control is much
more capable than the current temperature controllers. This TEMPERATURE
pensating for thermo mass changes in the system, CONTROLLER
dealing with unknown and variable delays, operating at very
different temperature setpoints without retuning, etc. It is
achieved by implementing, in FLC, a classical control strategy Setpoint
and an adaptation mechanism pensate for the dynamic Figure 1: A typical industrial temperature control pr