| 摘要 |
An electro-mechanical actuator ( 21 ) includes a reverse transfer system ball-screw ( 20 ). The actuator broadly includes a frame ( 22 ), a nut ( 43 ) mounted on the frame, at least one magnet ( 59 ) mounted on the nut, at least one coil ( 55 ) mounted on the frame, the coil being adapted to be selectively supplied with current to cause the nut to rotate within the frame, a rotary feedback device ( 80 ), and a screw ( 44 ) arranged within the nut for rotational and axial movement relative thereto. The screw and nut both have cooperative ball recesses ( 72, 74 ) that define a ball path in which a plurality of balls ( 73 ) are mounted. The ball recirculation path is provided in the screw. A rod ( 23 ) is connected to the screw for movement therewith. Relative rotation between the nut and screw will cause the screw and rod to move axially relative to the frame. |
