Abstract
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° is possible. The position value is available at once after power up. Due to single standard CMOS chip capability, a reasonable price is achievable.
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References
Gottfried-Gottfried, Ralf; Hauptmann, Dirk; Krause, Martin; Kreisig, Bernd; Ulbricht, Steffen: “Absolute position detection system with μm resolution using an integrated array of hall sensors” 9th Sensors conference publications p.261–262, 1999.
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© 2002 Springer-Verlag Berlin Heidelberg
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Grueger, H., Lakner, H. (2002). High Resolution Absolute Angular Position Detection with Single Chip Capability. In: Krueger, S., Gessner, W. (eds) Advanced Microsystems for Automotive Applications Yearbook 2002. VDI-Buch. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-18213-6_26
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DOI: https://doi.org/10.1007/978-3-642-18213-6_26
Publisher Name: Springer, Berlin, Heidelberg
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