Position detection device and position detection method
US10989568B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 1, 2018 |
| Grant date | Apr 27, 2021 |
| Priority date | — |
| Expiry date | Mar 1, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/34792
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
There is provided a position detection device to suppress an influence of a signal distortion due to a processing error, an assembly error of a sensor, or the like. The position detection device includes: a waveform correction unit that corrects waveforms of a first signal and a second signal, the first signal being detected from a first track provided on a moving body and having a scale of predetermined cycles, and the second signal being detected from a second track provided on the moving body and having a scale of cycles less than the predetermined cycles; and a position calculation unit that calculates a position of the moving body on the basis of the corrected first signal and second signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.