Rotation angle detector

Details Rotation angle detector Rotation angle detector

2006-12-26

2006-12-26

Lefkowitz, Edward (Department: 2862)

Electricity: measuring and testing

Magnetic

Displacement

Reexamination Certificate

active

07154263

ABSTRACT:
Disclosed here is a rotation angle detector capable of detecting unusual value as a rotation angle so as not to output incorrect data. According to the rotation angle detector of the present invention, the first detector, the second detector, and the auxiliary detector rotate at a different speed. Receiving each detecting signal from i) the first and second rotation-detecting sections; ii) the second rotation-detecting section and the auxiliary rotation-detecting section; and iii) the first rotation-detecting section and the auxiliary rotation-detecting section, the controller calculates at least two tentative values for determining the rotation angle of the rotator. When the calculation values are within a predetermined range, the controller determines the detecting signal from the first and second rotation-detecting sections to be the rotation angle of the rotator.

REFERENCES:
patent: 2004/0145364 (2004-07-01), Onishi et al.
patent: 2004-271427 (2004-09-01), None

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