Actuator and object detecting apparatus that uses actuator

G - Physics – 01 – B

Patent

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Details

G01B 21/16 (2006.01) B60R 21/01 (2006.01) G01B 7/14 (2006.01) G01B 11/14 (2006.01) G01B 15/00 (2006.01) G01S 13/32 (2006.01) G01S 17/32 (2006.01)

Patent

CA 2498190

An actuator includes a blade spring of which one end is fixed to a fixed member and the other end is fixed to a movable member. A driving unit moves the movable member. A position detector detects a distance to a flat portion of the blade spring, and a calculating unit calculates an amount of displacement of the movable member based on the distance detected by the position detector.

L'invention concerne un actionneur (1) comportant des ressorts de lame dont les deux extrémités sont supportées par un élément fixe (2) et un élément mobile (3), des moyens d'entraînement (6) destinés à déplacer l'élément mobile (3), des moyens de détection de position (5) dont l'objet de détection sont les ressorts de lame (4), et des moyens de calcul destinés à calculer un degré de déplacement de l'élément mobile (3) à partir de la distance se trouvant entre un ressort à lame (4) et les moyens de détection de position (5) détectés par les moyens de détection de position (5). La structure susmentionnée assure une précision de positionnement de l'élément mobile (3).

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