Encoder, servomotor, and servo system
US11675328B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2020 |
| Grant date | Jun 13, 2023 |
| Priority date | — |
| Expiry date | Oct 29, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/37182
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An encoder includes a disc and a sensor. The disc has a circular surface with a central axis and is rotatable around the central axis. The disc has a slit row provided on the circular surface. The slit row includes slits arranged in a circumferential direction of the circular surface around the central axis and in a radial direction of the circular surface. The sensor is provided opposite to the slit row on circular surface. The sensor has a first light receiver and a second light receiver. The first light receiver is configured to output a first light receiving signal as the slit row rotates along the circumferential direction when the disc rotates around the central axis. The second light receiver is configured to output a second light receiving signal as the slit row moves along the radial direction when the disc rotates around the central axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.