Rotation angle detector

Details Rotation angle detector Rotation angle detector

2007-05-01

2007-05-01

Aurora, Reena (Department: 2862)

Electricity: measuring and testing

Magnetic

Displacement

Reexamination Certificate

active

11007173

ABSTRACT:
A rotation angle detector has a rotary member which is rotated in association with a steering shaft, detecting members each of which is rotated in association with the rotary member, magnets which are arranged in correspondence to these detecting members and rotated integrally with these corresponding detecting members, magnetic sensing devices which are arranged opposed to the respective corresponding magnets, and a controlling circuit for calculating a rotation angle of the steering shaft based on detection signals from the magnetic sensing devices, wherein at least one of the magnets has a first section on a side of the magnetic sensing device, and a second section on a side opposite to the magnetic sensing device, and the north pole and the south pole of the first section are arranged in a reversed manner to those of the second section.

REFERENCES:
patent: 4773381 (1988-09-01), Koshida
patent: 5663640 (1997-09-01), Sakamoto
patent: 5781005 (1998-07-01), Vig et al.
patent: 6131547 (2000-10-01), Weber et al.
patent: 0 247 567 (1987-12-01), None
patent: 11-287608 (1999-10-01), None

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