| 摘要 |
<p>A stroke-controllable actuating device includes a motion control mechanism, a position feedback mechanism and an actuating mechanism. The motion control mechanism comprises a stepping motor (6) and a control system (5) for the stepping motor. The position feedback mechanism comprises hall elements (10) and a permanent magnet (18). The actuating mechanism comprises a rotating assembly and a translating assembly. A screw pair of the translating assembly converts the movement. The stroke and the position are detected by the position feedback mechanism, and a detected signal is input to the control system (5) for the stepping motor.</p> |
