Position sensor using a compound magnetic flux source

G - Physics – 01 – D

Patent

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Details

G01D 5/14 (2006.01) G01B 7/00 (2006.01) G01B 7/14 (2006.01) G01B 7/30 (2006.01) G01D 5/16 (2006.01) G01D 5/20 (2006.01) G01D 5/245 (2006.01)

Patent

CA 2491301

A non-contacting position sensor detects relative displacement between two objects. A magnetic flux source is provided by a plurality of discrete magnets selectively determined to produce a highly configurable flux source that is easily adapted to rotary or rectilinear displacement. The interaction of the individual flux fields generated by the discrete magnets is controlled to produce both linear and non-linear relationships with respect to changes in displacement. A flux-gathering pole piece is dimensionally optimized to integrate the plurality of individual flux fields directed to a magnetic sensor.

L'invention concerne un capteur de position sans contact permettant de détecter un déplacement relatif entre deux objets. Une source de flux magnétique est générée par plusieurs aimants distincts déterminés de façon sélective en vue de produire une source de flux hautement configurable aisément adaptée à un déplacement rotatif ou rectiligne. L'interaction des champs de flux individuels générés par les aimants distincts est commandée en vue de produire des relations à la fois linéaire et non linéaire par rapport aux variations de mouvement. Une pièce polaire d'assemblage de flux est optimisée de façon dimensionnelle de manière à intégrer plusieurs champs de flux individuels dirigés vers un capteur magnétique.

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