Torque and angular sensor
US10718637B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 21, 2018 |
| Grant date | Jul 21, 2020 |
| Priority date | — |
| Expiry date | Nov 13, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/2006
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A torque and angular sensor includes a differential angle sensor to precisely measure a differential angle between an input shaft and an output shaft and an angular position sensor to measure the angle of at least one of the shafts over a full angular range. The differential angle sensor measures an output rotation angle of an output target and an input rotation angle of an input target using changing voltages in taps on the input and output coils, which each carry an AC excitation current and which are each inductively coupled with teeth on targets fixed to rotate with one of the shafts. Input shaft rotation angle region is combined with the input angular position as a rotation angle composite. A raw torque angle is determined based on the difference between the input and output rotation angles. Rotational and Linear compensation provides a high-precision torque angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.