| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a voice coil motor. <P>SOLUTION: The voice coil motor includes a movable magnetic circuit component 43, a fixed circuit component 44, a position sensing sensor 420, a preservation medium 421, and a controller 42. The movable magnetic circuit component 43 is equipped with a permanent magnet, with a load installation sliding stage being physically connected. The fixed circuit component 44 comprises a coil. The position sensing sensor 420 can detect a present position of the movable magnetic circuit component 43 for outputting a positional electric value by a signal amplifier. The controller 42 reads an increment value and a deviation amount compensating value from the preservation medium 421. Based on the increment value and the deviation amount compensating value, a positional electric signal value after calibration causes the coil of the fixed circuit component 44 to acquire electric power, and then, under the interaction of the magnetic force provided by the fixed circuit component 44 and the movable magnetic circuit component 43, the load installation sliding stage is moved between upper end point and a lower end point within a movement range. <P>COPYRIGHT: (C)2012,JPO&INPIT |
