Systems and methods for correcting non-sinusoidal signals generated from non-circular couplers
US11125591B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2018 |
| Grant date | Sep 21, 2021 |
| Priority date | — |
| Expiry date | Dec 1, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/2073
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system including a non-circular coupler, a sensor, a memory module, and a processor module is provided. The sensor includes a transmitter coil adapted to be energized by a high frequency current source and at least two receiving coils. One of the receiver coils generate a sine-like function output signal and the other generates a cosine-like function output signal upon rotation of the coupler. The memory module is operable to compensate for non-sinusoidal output signals caused by a plurality of geometric errors and a gap between the coupler and the at least two receiving coils. The processor module configured to process the non-sinusoidal output signals from both the first and second receiver coils, determine an error in the non-sinusoidal output signals from both the first and second receiver coils, mathematically compensate the assembly to eliminate the error and generates an output signal representative of the rotational position of the coupler.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.