| 摘要 |
An angle detection device (1) formed in the shape of a disk includes: a graduation plate (11) having a plurality of graduation lines being provided radially from the center toward the circumference thereof; and two detectors (12) being disposed along the circumference of the graduation plate (11) in a manner to be opposite to each other in a radial direction, the detectors (12) detecting the graduation lines. The angle detection device (1) is configured to calculate a center error (´) based on angles detected by the detectors (12). |
