Electricity: motive power systems – Constant motor current – load and/or torque control
Reexamination Certificate
2007-01-25
2008-11-18
Duda, Rina I (Department: 2837)
Electricity: motive power systems
Constant motor current, load and/or torque control
C318S632000, C318S638000
Reexamination Certificate
active
07453223
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.
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Buck Bernhard
Knopf Eric
Nöll Matthias
Seidler Malte
Strunk Detleff
Duda Rina I
Greenberg Laurence A.
Heidelberger Druckmaschinen AG
Locher Ralph E.
Stemer Werner H.
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