High-resolution non-contacting multi-turn position sensor

Details High-resolution non-contacting multi-turn position sensor High-resolution non-contacting multi-turn position sensor

G - Physics

01

D

G01D 18/00 (2006.01) G01D 5/12 (2006.01) G01D 11/24 (2006.01)

Patent

CA 2728306

Disclosed are systems and methods for effectively sensing rotational position of an object. In certain embodiments, a rotational position sensor can include a shaft configured to couple with the rotating object. The shaft can be configured to couple with a magnet carrier such that rotation of the shaft yields translational motion of the carrier. A magnet mounted to the carrier also moves longitudinally with respect to the axis of the shaft, and relative to a magnetic field sensor configured to detect the magnet's longitudinal position. The detected longitudinal position can be in a range corresponding to a rotational range of the shaft, where the rotational range can be greater than one turn. In certain embodiments, the rotational position sensor can include a programmable capability to facilitate ease and flexibility in calibration and use in a wide range of applications.

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