Angular position sensor

Details Angular position sensor Angular position sensor

2005-11-01

2005-11-01

Donovan, Lincoln (Department: 2832)

Electricity: magnetically operated switches, magnets, and electr

Permanent magnet-actuated switches

Plural magnets

C324S207200, C324S207110

Reexamination Certificate

active

06960973

ABSTRACT:
An angular position sensor employs a pair of magnets that are disposed on a rotating cylinder at opposite ends of a diameter of the cylinder. A hall-effect flux sensor is fixed within the cylinder and offset from a line of geometric and magnetic symmetry between the magnets. The offset sensor detects a linear change in flux of the magnets as the magnets rotate with the cylinder over a predetermined angular distance and thereby determines the angular position of the cylinder. The offset of the sensor is adjusted to reduce the sensing error.

REFERENCES:
patent: 4392375 (1983-07-01), Eguchi et al.
patent: 6137288 (2000-10-01), Luetzow
patent: 6489761 (2002-12-01), Schroeder et al.
patent: 6509734 (2003-01-01), Luetzow
patent: 2001/0026153 (2001-10-01), Nakamura et al.
patent: 2002/0121894 (2002-09-01), Ooki et al.

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