| 摘要 |
PROBLEM TO BE SOLVED: To provide a noncontact angle sensor capable of widening an allowable range of shaft displacement. SOLUTION: The noncontact angle sensor is constituted of a rotor core, a first magnet, a second magnet, two fixed side cores, and a magnetic sensor. The first magnet is fixed in a range of 180 degrees or smaller on the outer periphery or the inner periphery of the rotor core, and the side of the rotor core is an N pole, and the reverse side of the rotor core is an S pole. The second magnet is fixed in a range of the same angle as the first magnet at a position different from the first magnet of the outer periphery or the inner periphery of the rotor core, and the side of the rotor core is an S pole, and the reverse side of the rotor core is an N pole. The fixed side core is in the form of a ring or a disk that centers the rotating shaft of a moving body, and divided into a plurality of them in the rotating direction. In addition, the two fixed side cores are arranged so that divided positions face so as to sandwich the first magnet and the second magnet by spacing a prescribed interval. COPYRIGHT: (C)2009,JPO&INPIT
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