Patent ID: 8920125

Claim:
A vibration suppressor system for reducing vibrations in a rotating system, comprising: an annular electric motor system provided about an axis of rotation of the rotating system, said annular electric motor system including an annular bearing and a first mass supported within said annular bearing, said first mass guided about said axis of rotation by said annular bearing, wherein said first mass is eccentric, said first mass including a truck being at least partially conductive, said annular electric motor system further including a stator axially spaced-apart, relative to said axis of rotation, from said truck; a control system in communication with said annular electric motor system to control rotation of said first mass about said axis of rotation to reduce in-plane vibration of the rotating system; wherein a second mass is supported within said annular bearing, and wherein said second mass is eccentric; and wherein said control system independently controls rotation of said first and second masses about said axis of rotation.