Invention Grant
- Patent Title: Angle sensor with offline error correction
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Application No.: US16593308Application Date: 2019-10-04
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Publication No.: US11333486B2Publication Date: 2022-05-17
- Inventor: Nicolas Rigoni , Octavio H. Alpago
- 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: G01B9/02055
- IPC: G01B9/02055 ; G01B7/30 ; G01R1/00

Abstract:
An angle sensor can have a plurality of magnetic field sensing elements configured to detect a magnetic field and generate a respective plurality of magnetic field signals. In response to these magnetic field signals, a processor generates an uncorrected angle signal that is indicative of an angle of the magnetic field. An error corrector generates an error value using one or more of the previous samples of the uncorrected angle signal, and a summation element applies the error value to a current sample of the uncorrected angle signal to generate a corrected angle signal. The error corrector can generate the error value by applying a correction factor to a previous sample of the uncorrected angle signal, or by applying a correction factor to a predicted current sample of the uncorrected angle signal.
Public/Granted literature
- US20210102798A1 ANGLE SENSOR WITH OFFLINE ERROR CORRECTION Public/Granted day:2021-04-08
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