Invention Grant
- Patent Title: Systems and methods for reducing angle error for magnetic field angle sensors
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Application No.: US15884619Application Date: 2018-01-31
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Publication No.: US10557726B2Publication Date: 2020-02-11
- Inventor: Rémy Lassalle-Balier
- Applicant: Allegro MicroSystems, LLC
- Applicant Address: US NH Manchester
- Assignee: Allegro MicroSystems, LLC
- Current Assignee: Allegro MicroSystems, LLC
- Current Assignee Address: US NH Manchester
- Agency: Daly, Crowley, Mofford & Durkee LLP
- Main IPC: G01D5/16
- IPC: G01D5/16

Abstract:
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°.
Public/Granted literature
- US20190234764A1 SYSTEMS AND METHODS FOR REDUCING ANGLE ERROR FOR MAGNETIC FIELD ANGLE SENSORS Public/Granted day:2019-08-01
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