Rotation angle sensor

Details Rotation angle sensor Rotation angle sensor

2007-04-03

2007-04-03

Barlow, John (Department: 2863)

Data processing: measuring, calibrating, or testing

Measurement system

Orientation or position

C033S0010PT, C033S707000, C033S708000, C701S041000, C180S444000, C073S862326

Reexamination Certificate

active

11049082

ABSTRACT:
A rotation angle sensor includes a first and a second detection gears rotatable with a steering shaft, a first detector configured to detect a rotation angle of the first detection gear, a second detector configured to detect a rotation angle of the second detection gear, a processor configured to calculate a rotation angle of the steering shaft based on the rotation angles detected by the first and second detectors and a discriminator configured to discriminate whether the rotational angle of the steering shaft, calculated by the processor, falls in an abnormal value, wherein a least common multiple between a cycle of the first detector and a cycle of the second detector is greater than a steering angle measurement range.

REFERENCES:
patent: 4651840 (1987-03-01), Shimizu et al.
patent: 5930905 (1999-08-01), Zabler et al.
patent: 6552533 (2003-04-01), Schodlbauer et al.
patent: 2003/0056583 (2003-03-01), Schodlbauer et al.
patent: 1 522 486 (2005-04-01), None
patent: 11-500828 (1999-01-01), None

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