Rotational position sensor employing magneto resistors

Details Rotational position sensor employing magneto resistors Rotational position sensor employing magneto resistors

1998-04-02

2000-07-04

Strecker, Gerard

Electricity: measuring and testing

Magnetic

Displacement

32420725, 324252, G01B 730, G01D 516, G01R 3309

Patent

active

060844019

ABSTRACT:
A rotational position sensor assembly (10) includes a wheel (20) having a ferromagnetic hub portion (22) and a resistor support member (24) on which an array of magneto resistor elements (28) are mounted. Surrounding the wheel (20) and rotatable relative to it is a magnetic return element (12) on which are mounted permanent magnets (18). The magnetic field created is tangential to the particular MR element(s) (28) aligned with this field, causing a change in resistance that indicates the relative rotational position of the magnetic return element (12) relative to the wheel (20).

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patent: 5600238 (1997-02-01), Holloway et al.
patent: 5929631 (1999-07-01), Striker et al.

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