System and process for active vibration damping

摘要

PCT No. PCT/EP95/00680 Sec. 371 Date Nov. 4, 1996 Sec. 102(e) Date Nov. 4, 1996 PCT Filed Feb. 24, 1995 PCT Pub. No. WO95/23301 PCT Pub. Date Aug. 31, 1995An 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.