| 摘要 |
<P>PROBLEM TO BE SOLVED: To facilitate synchronization with a previously prepared correction data table, in correcting the detection position of a movable element, using the correction data table. <P>SOLUTION: The position detecting device 4 for shaft-type linear motor 1 that linearly drives the movable element 3 detects the position of the movable element 3, based on a magnet sensor S provided at the movable element 3 and flux of the shaft 2 detected by the magnet sensor S. Although there is a need to recognize the zero position of the movable element 3 and to synchronize with the correction data table when correcting the detection position of the movable element 3 using the previously prepared correction data table. The zero position is taken as an electricity zero position predetermined, based on previously prepared zero position data. When the detection data obtained from the detection signal of the magnet sensor S matchs the zero position data, the current movable element position is recognized as the zero position. <P>COPYRIGHT: (C)2010,JPO&INPIT |
