Rotary single-phase electromagnetic servo actuator comprising an actuator and a position sensor
US8502426B2 · kind B2 · utility
6Cited by
35References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2012 |
| Grant date | Aug 6, 2013 |
| Priority date | — |
| Expiry date | Jun 22, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K11/215
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A single phase electromagnetic servo-actuator that includes a rotary actuator which moves a mobile member along a limited travel including a 2N ferromagnetic pole stator structure and at least one excitation coil, the stator structure being made of a material with high magnetic permeability and a rotor having ferromagnetic yoke and a thin magnetized portion of 2N pairs of axially magnetized poles, in alternate directions, and a rotor angular position sensor, the thin magnetized portion being a separate element from the ferromagnetic yoke.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.