| 摘要 |
PROBLEM TO BE SOLVED: To facilitate adjusting work by partially arranging ferromagnetic bodies in the vicinity of a magnetoelectric converting device and avoiding the complication of a detected angle adjusting mechanism. SOLUTION: The magnetic-type rotation angle detecting device comprises both a permanent magnet rotor 1 which is polarized in such a way as to have multipolarity and in which the polarities of magnetic poles alternately change, and a Hall IC 2 as the magnetoelectric converting device to detect the magnetic field of the permanent magnet rotor 1. The ferromagnetic bodies 3 and 4 to change the direction of a magnetic flux from the permanent magnet rotor 1 are arranged on the opposite side of the Hall IC 2 to the permanent magnet rotor 1 to correct the detected angle of the magnetic poles by the Hall IC 2.
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