Method for active compensation of oscillations in a machine which processes printing material, and a machine which processes printing material

US7453223B2 · kind B2 · utility

Assignee

• Heidelberger Druckmaschinen AG · DE

Inventors

• Bernhard Buck · Heidelberg, DE
• Eric A. Knopf · Mountain View, US
• Matthias Noll · Weiterstadt, DE
• Malte Seidler · Heidelberg, DE
• Detleff Strunk · Heidelberg, DE
• Uwe Tessmann · Schallstadt, DE

Key dates

• Filing date: Jan 25, 2007
• Grant date: Nov 18, 2008
• Expiry date: May 8, 2027

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41F13/0045
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

For the active compensation of oscillations in a machine which processes printing material, a signal which contains an oscillation of the machine or of a part of the machine is measured and at least one counter torque is introduced into the machine to reduce the oscillation. At least one measure for a ratio between the amplitude of the uncompensated oscillation and the amplitude of the counter torque necessary for complete compensation is compared with a threshold value. The counter torque is determined in a first functional relationship with the oscillation if the measure is greater than the threshold value, and the counter torque is determined in a second functional relationship with the oscillation, if the measure is smaller than the threshold value. In the machine, a regulating device is operated in a first or second operating mode in dependence on the measure of the ratio.