POSITION DETECTION DEVICE FOR MOVABLE MAGNET TYPE LINEAR MOTOR
申请公布号:EP2451061(A1)
申请号:EP20090846846
申请日期:2009.12.25
申请公布日期:2012.05.09
发明人:MARKON SANDOR;ONAT AHMET
分类号:H02P6/182;H02K11/225;H02K29/12;H02K41/03;H02P6/00;H02P6/18;H02P25/06
主分类号:H02P6/182
摘要:The present invention provides a position detector which can detect the position of a mover on the side of a stator, and which realizes detection with high accuracy in a moving magnet type linear motor. In a moving magnet type linear motor including: a stator 2 with a plurality of coils placed in one direction; and a mover 3 with a permanent magnet so placed as to be opposed to the stator 2, a position detector according to one embodiment of the present invention detects the position of the mover 3. The position detector includes a magnetic body 5 fixed to the mover 3. One or two or more coils are selected and a voltage is applied to the selected coil while a current or a voltage induced in a coil adjacent to the selected coil is measured, and the position of the magnetic body 5 that changes in response to the position of the mover 3 is determined based on the measured current or the measured voltage.
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