| 摘要 |
The subject of the invention is a device for automatically positioning, with respect to at least one axis of rotation, an element liable to move in a medium in response to disturbances, particularly electromagnetic disturbances, the said device comprising at least one mast (16) to the end of which a support (24, 36) to which the said element can be secured is articulated about an axis of rotation, characterized in that it comprises at least one drive (28, 44) which is offset from the said axis of rotation, capable of driving the said axis of rotation through a drive line, and at least one encoder (52) capable of monitoring the actual movement of the said axis of rotation in order in particular to compensate for any backlash in the drive line. |
