| 摘要 |
A dual drive motive system used to control the movement or position of another system or structure in a first and second embodiment has two motors, two frame members and a ring moveably mounted between the frame members by means of suitable bearings. One of the motors provides continuous relative motion between the ring and one of the frame members which may be secured to a foundational structure. The other motor provides relative motion between the ring and the other frame member which may be secured to a turret structure. This motion avoids the transient disturbances of lubricants. In a third embodiment, the system includes two armatures which share a common stator. In operation, the armatures and stator which are concentrically positioned rotate relative to each other and in opposite directions. In a fourth embodiment, the armatures share a common stator and the armatures are coaxially positioned. Altering the relative rotational speeds of the motors or motor components results in rotation of the system output (turret or output shaft). Although the motors or motor components and bearings are in continuous motion, the system output may be stationary or within a desired range of rotational speeds in either direction.
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