SPEED CONTROL DEVICE, AND SPEED CONTROL SYSTEM FOR PINCH ROLL

PROBLEM TO BE SOLVED: To control hunting due to destabilization of a speed control system for a pinch roll motor in operation, in speed control of a pinch roll.SOLUTION: A speed control device for the pinch roll includes: a master control part which sets a speed target value and a tension balance ta...

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Bibliographische Detailangaben
Hauptverfasser:	YAMANAKA SACHIFUMI, ITO KENSAKU, KIKKO HIROYUKI
Format:	Patent
Sprache:	eng
Schlagworte:	AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PUNCHING METAL ROLLING OF METAL TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To control hunting due to destabilization of a speed control system for a pinch roll motor in operation, in speed control of a pinch roll.SOLUTION: A speed control device for the pinch roll includes: a master control part which sets a speed target value and a tension balance target value of the pinch roll as an input signal, and outputs a correction speed target value of the pinch roll, using a first PI controller; and a drive part which obtains a first difference value of the correction speed target value and a speed actual value of the pinch roll, and inputs the difference value to obtain a current command value driving the pinch roll motor with a second PI controller. The master control part obtains a second difference value of the tension balance target value and the current command value, inputs the second difference value to the first PI controller, inputs the output to a low pass filter, and outputs the correction speed target value from the output of the low pass filter and the speed target value.