| 摘要 |
PROBLEM TO BE SOLVED: To greatly change an output signal of a rotation detection sensor 13a by greatly changing a characteristic of a magnetic detection element 21 constituting the rotation detection sensor 13a. SOLUTION: The magnetic detection element 21 is arranged so as to be inclined with respect to a central axisαof a detection part 20a of the rotation detection sensor 13a. Then, a direction to which a magnetic fluxβis output from a permanent magnet 15 constituting an encoder 12 is made orthogonal to the magnetic detection element 21. As a result, the characteristic of the magnetic detection element 21 is greatly changed corresponding to changes in a direction and a density of the magnetic fluxβcaused by the rotation of the encoder 12, thereby solving the problem. COPYRIGHT: (C)2004,JPO
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