Method and arrangement for distance measurement

Details Method and arrangement for distance measurement Method and arrangement for distance measurement

G - Physics

01

B

G01B 7/14 (2006.01) B02C 7/14 (2006.01) D21D 1/00 (2006.01)

Patent

CA 2373820

In a machine which is provided with a stator and an opposite rotor, a sensor of magnetic type, arranged in the stator, for determining the distance between the stator and the rotor can be calibrated by the sensor first being moved relative to the stator into contact with the rotor for zeroing. The sensor is then reversed a predetermined distance, after which the sensor signal can be used for determining the distance between the stator and the rotor. In an arrangement suitable for the purpose, the stator has at least one sensor of magnetic type, which is intended to interact with an opposite surface on the rotor. The sensor is mounted displaceably in the axial direction of the rotor and can be brought into contact with the rotor.

L'invention concerne une machine comportant un stator (5) et un rotor opposé (3), un capteur magnétique (10) étant disposé dans le stator afin de déterminer la distance entre le stator et le rotor. Ledit capteur peut être étalonné par déplacement de ce dernier par rapport au stator, en contact avec le rotor pour la mise à zéro. Le capteur est ensuite ramené sur une distance prédéterminée, le signal du capteur pouvant ensuite être utilisé pour déterminer la distance (6) entre le stator (5) et le rotor (3). Dans un dispositif selon l'invention, le stator (5) comporte au moins un capteur magnétique (10) destiné à interagir avec une surface opposée du rotor (3). Le capteur (10) est monté de manière mobile dans le sens axial du rotor et peut être mis en contact avec le rotor (3).

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