Rotary single-phase electromagnetic servo actuator comprising an actuator and a position sensor
US8222777B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2006 |
| Grant date | Jul 17, 2012 |
| Priority date | — |
| Expiry date | Mar 23, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K11/215
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention concerns a rotary single-phase electromagnetic servo actuator consisting of a rotary actuator designed to move a mobile member along a limited travel, including a 2N pole stator structure, N being equal to 1 or 2, and at least one field coil, said stator structure being made of a material with high magnetic permeability, and a rotor having a ferromagnetic yoke and a thin magnetized portion consisting of 2N pairs of axially magnetized poles, in alternate directions and a rotor angular position sensor. The invention is characterized in that the position sensor has a magnetic field emitter integral with the yoke and a receiver for the magnetic field stationary relative to the stator structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.