H - Electricity – 01 – F
Patent
H - Electricity
01
F
H01F 7/08 (2006.01) G01V 1/18 (2006.01)
Patent
CA 2358209
The invention concerns an electromagnetic actuator designed to move an external member (2), comprising a fixed stator element (12) associated with a mobile polar element (14) capable of being made integral with the external member (2), the fixed stator element (12) and the mobile polar element (14) forming a magnetic circuit and defining between them at least two air gaps (51), a magnet (5) promoting the generation of magnetic field lines in the magnetic circuit, a coil (6) and means powering the coil to control by electromagnetic induction phenomena the displacement of the mobile adjusting polar element (15). It further comprises a polar adjusting element (15) to place the mobile polar element (14) in an adjusted position relative to that of the fixed stator element (12), by deviating the magnetic field lines. The invention is particularly applicable to accelerometers.
La présente invention concerne un actionneur électromagnétique destiné à déplacer un organe extérieur (2), comprenant un élément statorique fixe (12) associé à un élément polaire mobile (14) solidarisable à l'organe extérieur (2), l'élément statorique fixe (12) et l'élément polaire mobile (14) formant un circuit magnétique et définissant entre eux au moins deux entrefers (51), un aimant (5) contribuant à créer des lignes de champ magnétique dans le circuit magnétique, une bobine (6) et des moyens d'alimentation de la bobine pour commander par des phénomènes d'induction électromagnétique le déplacement de l'élément polaire mobile (14). Il comporte, de plus, un élément polaire (15) d'ajustement pour mettre l'élément polaire mobile (14) dans une position ajustée par rapport à celle de l'élément statorique fixe (12), en déviant les lignes de champ magnétique. Application notamment aux accéléromètres.
Giroud Pierre
Guillemin Pierre
Goudreau Gage Dubuc
Thales Avionics S.a.
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