Feedforward control system for an elastic material

A process for providing feedforward control to control the feed rate of an elastic material. The process involves measuring the distance between registration marks on the elastic material prior to cut-off. These measurements are compared to a target cut length. The feed rate of a feed roll is adjust...

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Bibliographische Detailangaben
Hauptverfasser:	DUEHRING DOUGLAS N, FRANKLIN KENT ALLAN, SCHILPP AARON DEE
Format:	Patent
Sprache:	eng
Schlagworte:	BANDAGES, DRESSINGS OR ABSORBENT PADS CONVEYING CUTTING DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING,CUTTING-OUT, STAMPING-OUT OR SEVERING DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS FILTERS IMPLANTABLE INTO BLOOD VESSELS FIRST-AID KITS FOMENTATION HAND CUTTING TOOLS HANDLING THIN OR FILAMENTARY MATERIAL HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS,CABLES HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES PACKING PERFORMING OPERATIONS PROSTHESES SEVERING STORING TRANSPORTING TREATMENT OR PROTECTION OF EYES OR EARS
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Beschreibung
Zusammenfassung:	A process for providing feedforward control to control the feed rate of an elastic material. The process involves measuring the distance between registration marks on the elastic material prior to cut-off. These measurements are compared to a target cut length. The feed rate of a feed roll is adjusted, based on the target cut length and the distance between the registration marks, to maintain the cut length of the elastic material at the target cut length.