Self-calibrating single track absolute rotary encoder
US9423281B2 · kind B2 · utility
2Cited by
8References
20Claims
0Family size
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Key dates
| Filing date | May 21, 2013 |
| Grant date | Aug 23, 2016 |
| Priority date | — |
| Expiry date | Sep 20, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D18/001
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A rotary encoder includes a single read-head and a circular scale. The encoder is self-calibrated by acquiring calibration samples with the read-head for rotational angles of the circular scale, and estimating spatial frequency and spatial distortion parameters of the encoder from the calibration samples.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.