Rotation-angle-detecting apparatus, rotating machine and rotation-angle-detecting method
US8564283B2 · kind B2 · utility
7Cited by
1References
18Claims
0Family size
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Key dates
| Filing date | Feb 3, 2009 |
| Grant date | Oct 22, 2013 |
| Priority date | — |
| Expiry date | Jul 20, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/2448
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for detecting a rotation angle using a magnet rotor comprising a magnet having 2N poles, wherein N is a natural number, and a sensor device for detecting the direction of a magnetic flux from the magnet rotor, at least one of two output voltages obtained in radial and rotational directions by the sensor device being multiplied by a correction coefficient, and the rotation angle being calculated from the two corrected output voltages to increase the detection accuracy of the rotation angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.