A linear array of hall sensors has been realized in a 100% CMOS compatible technology. A cylindrical magnet, diametrally magnetized, mounted at the middle of the turning axis provides a pattern, that has a zero field position depending on the angular position. Hall array and magnet form a system, that empossibles angular position detection using a linear regression over the signals of some of the hall sensors. Applying a linear regression over the signals of eight sensors a resolution below 0.1 degree is possible. The position value is available at once after power up. Due to single standard CMOS chip capability, a reasonable price is achievable.
High resolution absolute angular position detection with single chip capability
Hochauflösende, Absolutwert-Winkeldetektion mit einer Einchip-Lösung
2002
5 Seiten, 2 Bilder, 1 Quelle
Conference paper
English
High Resolution Absolute Angular Position Detection with Single Chip Capability
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