Rotational angle sensor
US10845216B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2017 |
| Grant date | Nov 24, 2020 |
| Priority date | — |
| Expiry date | May 18, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/2073
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A rotational angle sensor includes a stator element and rotor element. The stator element has a stator transmitting coil, circuit board, and at least two identically configured stator receiving coils angularly offset from each other on the circuit board. The rotor element is mounted rotatably about a rotation axis relative to the stator element, and has a rotor receiving coil and rotor transmitting coil electrically connected to each other. The rotor receiving coil is inductively coupled to the stator transmitting coil such that an electromagnetic field produced by the stator transmitting coil induces a current in the rotor receiving coil that flows through the rotor transmitting coil and causes the rotor transmitting coil produces a further electromagnetic field. The stator receiving coils are inductively coupled to the rotor transmitting coil in a manner configured with reference to a rotational angle between the stator element and the rotor element so that the further electromagnetic field induces at least two angle-dependent alternating voltages in the stator receiving coils. Each stator receiving coil is formed from a plurality of radial conductors and circumferential conducto…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.