Abstract
Two adaptive control techniques are evaluated by application to a realistic mathematical model of a suspension PVC reactor. Both techniques, the hyperstable direct model reference adaptive technique and the self-tuning regulator, prove to be very robust and give excellent control of the rate of conversion in the PVC reactor by controlling the cooling water flowrate into the reactor. Satisfactory regulation of the conversion rate and the reactor temperature is obtained even in the presence of step disturbances in the cooling water flowrate temperature and changing heat transfer coefficient. In the case of reactor operation under isothermal conditions, setpoint tracking of step changes in reactor temperature was evaluated and found to be very satisfactory.
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