Method for increasing the position measurement accuracy using inductive position sensor
US11293744B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 12, 2020 |
| Grant date | Apr 5, 2022 |
| Priority date | — |
| Expiry date | Jun 1, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/385
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An accurate position sensor that operates over a long range is provided. The position sensor can include a first sensor coil having a first number of periods over a range of motion of a target; and a second sensor coil having a second number of periods over the range, wherein the first number of periods is different from the second number of periods, and wherein the first sensor coil and the second sensor coil are arranged with respect to one another such that the target engages both of them simultaneously. In some embodiments, the first number of periods is one and the second number of periods is greater than one. In some embodiments, the first number of periods is greater than one and the second number of periods is greater than the first number of periods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.