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US 6,211,968 B1Granted
Method of regulating a web tension
AssigneeKoenig & Bauer-Albert Aktiengesellschaft
InventorsErhard Herbert Glöckner, Rüdiger Karl Seyfried
Life of this patent
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Abstract
A process for adjusting a web tension in a web-fed rotary printing machine addresses the problems of processing variables which are not precisely quatifiable, while minimizing the influence of the press operator. This is achieved by adjusting the web tension using rules of fuzzy logic.
Claims10
A method for regulating web tension in a plurality of webs in a web-fed rotary printing press including:
- detecting an actual valve for a web tension of each of a plurality of webs;
- providing a regulating device and supplying each said actual valve for a web tension to said regulating device;
- detecting input quantities describing the state of the web-fed rotary printing press and processing said input quantities in said regulating device;
- quantitatively characterizing said input quantities by linguistic rules and describing said input quantities by association functions;
- forming true values from said association function;
- formulating fuzzy logic rules and linking said fuzzy logic rules together;
- processing said true values using said fuzzy logic rules;
- backforming defined numerical values from said true values formed on the basis of said fuzzy rules;
- and
- affecting a tension of each of said plurality of webs by generating discrete manipulated variables and providing said discrete manipulated variables to the web-fed rotary printing press.
7 more elements
A method for regulating a web tension in each of a plurality of webs in a web-fed rotary printing press including:
- providing a draw-in unit for each of said webs;
- passing each said web through its associated one of said draw-in units;
- directed said plurality of webs from said draw-in units to a funnel inlet roller;
- arranging said plurality of webs at said funnel inlet roller from a lowermost web to an uppermost web;
- providing said web tension in each of said plurality of webs from a greatest at said lowermost web to a least at said uppermost web;
- and
- regulating said web tensions using said draw-in units.
4 more elements
Dependencies are inferred from the claim text.