DEVICE FOR SUPPORTING AND ROTATING A PAYLOAD RELATIVE TO A STRUCTURE, IN PARTICULAR FOR A SATELLITE ANTENNA POINTING MECHANISM

摘要

A device for supporting and rotating a payload relative to a structure comprises a first coupling ring joined to the payload and a second coupling ring joined to the structure. A pair of annular bearings guide rotation of the first coupling ring relative to the second coupling ring. An annular motor has a stator fixed to one of the coupling rings and a rotor rotating the other coupling ring through a differential epicyclic train disposed inside the annular bearings.