Method for calibrating a rotary encoder, and rotary encoder for determining a corrected angular position
US11243101B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 23, 2016 |
| Grant date | Feb 8, 2022 |
| Priority date | — |
| Expiry date | Dec 14, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D18/008
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for calibrating a rotary encoder for measuring a rotary angle position of a machine shaft. The method includes rotating a machine shaft; measuring a start measuring point with a sensor unit; activating a timer module to measure a time value; measuring an intermediate measuring point with the sensor unit; storing the actual rotary angle position of the intermediate measuring point and the time value associated therewith; measuring an end measuring point with the sensor unit; recording a time value incremented by the timer module which reflects a runtime for a rotary motion of the start to the end measuring point; calculating at least one time-dependent reference rotary angle position; calculating a deviation between the actual rotary angle position measured and the at least one time-dependent reference rotary angle position calculated for at least one time value; and correcting an output signal from the rotary encoder via the deviation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.