Device and method for determining an angular position of inductive position sensor
US11614344B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 13, 2022 |
| Grant date | Mar 28, 2023 |
| Priority date | — |
| Expiry date | Dec 13, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/2448
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of determining an angular position of a target of an inductive angular position sensor system, relative to a substrate, includes the steps of: receiving, demodulating and digitizing signals, and reducing a DC-offset of the digital signals, and determining an angular position. The step of reducing the DC-offset involves: i) initializing a DC-correction value; ii) subtracting the DC-correction value to obtain DC-shifted signals; iii) clipping the DC-shifted-signals to obtain clipped signals; iv) calculating a first sum by summing values of the clipped signal over one period, and v) calculating a second sum by summing absolute values of the clipped signal over said period; vi) adding to each DC correction value K times the first sum divided by the second sum, where K is a predefined constant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.