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S22 Mecatrônica |
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Title:
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TEMPERATURE CONTROL OF MULTI-INPUT MULTI-OUTPUT CROSS-COUPLED INDUSTRIAL OVENS
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Summary :
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THIS PAPER CONSIDERS THE APPLICATION OF FREQUENCY DOMAIN TECHNIQUES TO THE DESIGN OF MULTIVARIABLE OUTPUT FEEDBACK CONTROLLERS FOR NONLINEAR, MULTIPLE-HEATING-ZONES INDUSTRIAL OVENS. SPECIFICALLY, THE APPLICATION OF MULTIVARIABLE FREQUENCY DOMAIN TECHNIQUES TO A NONLINEAR OVEN WITH SIX HEATING ZONES IS PRESENTED. DUE TO THE OVEN CONSTRUCTION, THE HEAT FLOW RATE AMONG THE ZONES WAS HIGH AND SO IT WAS THE CROSS-COUPLING BETWEEN INPUTS AND OUTPUTS. THE SYSTEM DECOUPLING IS REACHED BY USING A PRE-COMPENSATOR TUNED AT 0 RD/MIN. SINCE THE PRE-COMPENSATED PLANT BECAME CLEARLY DIAGONAL DOMINANT AT LOW FREQUENCIES, THE SYSTEM SPECIFICATION ARE REACHED USING A MIMO DIAGONAL PID CONTROLLER. MULTIVARIABLE FREQUENCY DOMAIN TECHNIQUES ARE USED TO ANALYZE THE SYSTEM, TO OBTAIN THE SYSTEM DECOUPLING AND TO VALIDATE A SINGLE-INPUT SINGLE-OUTPUT (SISO) LINEAR CONTROL DESIGN APPROACH. SIMULATION RESULTS ARE PRESENTED.
KEY WORDS. MULTIVARIABLE FREQUENCY DOMAIN CONTROL. TEMPERATURE CONTROL.
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Author :
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de Araujo, Lauzier Pereira
Galvez, Jose Maria
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Paper View :
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