| 摘要 |
<p>The invention concerns a servo-control unit for a load (2) driven in rotation by means of motorization means (1) connected to the load by two reduction gears (3, 4) and comprising several sensors for measuring their movements. It includes a prestressing motoring system (5) arranged between the two reduction gears (3, 4) so as to apply a positive and respectively negative torque to each of the reduction gears. The prestressing system (5) is designed to apply a torque in one particular point of the operating field of the reduction gears and to introduce therein a variable prestressing level. The prestressing system (5) is an actuator (14) driven by a motor (17) and co-operating with a rack or a screw-nut system (15). The invention is useful for motorization of a turret mounted on a vehicle.</p> |
