System and process for active vibration damping
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United States of America Patent
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Jul 13, 1999
Grant Date -
N/A
app pub date -
Nov 4, 1996
filing date -
Feb 28, 1994
priority date (Note) -
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Abstract
An active vibration damping system for a drive unit having at least one drive shaft is provided. The vibration damping system includes a flywheel which comprises a movable base element of a linear electric motor that acts on the rotation of the shaft. The linear electric motor consists of a linear machine which generates a traveling magnetic field. The turning direction of the traveling magnetic field chosen relative to the turning direction of the crankshaft such that when unacceptably low momentary turning rates are sensed, a thrust force is applied to the flywheel and when unacceptably high momentary turning rates are sensed, a retarding force is applied until an evening up of the crankshaft rotation or a rotary vibration damping is achieved.
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