Rotational angle sensor
US10907992B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2016 |
| Grant date | Feb 2, 2021 |
| Priority date | — |
| Expiry date | Jan 11, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K3/28
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A rotational angle sensor includes a stator element, and rotor element. The stator element has a stator transmitting coil and a stator receiving coil. The rotor element is mounted rotatably about a rotation axis relative to the stator element, and has a rotor receiving coil and a rotor transmitting coil electrically connected with 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 to produce a further electromagnetic field. The stator receiving coil is inductively coupled to the rotor transmitting coil such that the inductive coupling is configured with reference to a rotational angle between the stator element and the rotor element so that the further electromagnetic field induces at least one angle-dependent alternating voltage in the stator receiving coil. The stator receiving coil has at least two circular-ring-sector-shaped partial windings that divide the stator element into sectors. The rotor transmitting coil has a number of sick…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.