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Systems and methods for reducing angle error for magnetic field angle sensors

Patentnummer:US10557726B2
IPC Hauptklasse:G01D000516
Anmelder:
Erfinder:
Anmeldung:31.01.18
Offenlegung:31.01.18
Patenterteilung:11.02.20

Abstract / Hauptanspruch
A magnetic field angle sensor is provided having two or more bridge structures of magnetoresistance elements, with each bridge structure configured to measure a projection of a magnetic field along a different axis such that an angle of direction of the magnetic field can be measured with greater accuracy. The angle sensor includes a first bridge structure configured to generate a first sinusoidal signal indicative of the magnetic field along a first axis and a first cosinusoidal signal indicative of the magnetic field along a second axis that is orthogonal with respect to the first axis and a second bridge structure configured to generate a second sinusoidal signal indicative of the magnetic field along a third axis and a second cosinusoidal signal indicative of the magnetic field along a fourth axis that is orthogonal with respect to the third axis, wherein an angle between the first axis and the third axis is a factor of 90°.

US10557726B2


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