DEVICE FOR CONTROLLING PRESSURE BY USING ADAPTIVE FUZZY CONTROL IN INSTRUMENT FOR MANUFACTURING FILM OF TWO ROLLS TYPE

摘要

PURPOSE: A device for controlling pressure by using adaptive fuzzy control in an instrument for manufacturing a film of two rolls type is provided to cope rapidly with the change of the process, which isn't managed in the PID control, by using an adaptive fuzzy controller. CONSTITUTION: The device includes a roll repelling power sensor(306), the target value of the roll repelling power, a PID control instrument(303), an error of the roll repelling power, an adaptive fuzzy control instrument and a casting speed target value. The roll repelling power sensor(306) senses the repelling power of the roll generated in manufacturing a film. The first calculating instrument calculates an error of the target value of the roll repelling power and the real value of the roll repelling power sensed in the roll repelling power sensor(306). The PID control instrument(303) inputs the error of the roll repelling power and calculates the corrected value of the casting speed to reduce the error. The adaptive fuzzy control instrument controls and applies the fuzzy control rule and infers the casting speed correcting portion. The second calculating instrument adds the target value of the casting speed and the correcting portion output from the PID control instrument(303) and the adaptive fuzzy control instrument and corrects the casting speed target value.