| 摘要 |
A magnetic rotary encoder for the fine resolution of the rotational angle of a shaft (1) includes an exciter unit which images the rotation to be monitored and rotates about an axis of rotation (20), a stationary fine resolution sensor unit (2) for fine resolution of each revolution, and an electronic processing means. It is characterized in that the exciter unit includes two first permanent magnets (7, 7) which are disposed symmetrically with respect to the axis of rotation at a mutual spacing such that their magnetization vectors (21, 21) which extend through their respective center of gravity extend in the same direction in relation to the common field lines and form a central field space (9) which directly connects the permanent magnets, and at least the fine resolution sensor unit is so arranged that it can use the field (10) of the central field space for measurement.
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