Data processing: measuring – calibrating – or testing – Measurement system – Orientation or position
Reexamination Certificate
2009-05-12
2011-12-13
Dunn, Drew A (Department: 2857)
Data processing: measuring, calibrating, or testing
Measurement system
Orientation or position
C702S127000, C702S150000, C702S094000, C702S145000, C702S189000, C318S400100, C318S400370, C318S400380
Reexamination Certificate
active
08078425
ABSTRACT:
A device for detecting the angular position of a rotor of a polyphase rotary electrical machine contains a stator and a plurality of magnetic field sensors (200) delivering first signals (2001-2003) representing a magnetic field. The device includes means (201) for generating, from linear combinations of the first signals, first (2010) and second (2011) sinusoidal signals, phase-shifted by a determined value φ representing an angular position of the rotor, referred to as real. The device includes means for detecting a value for an angular position of the rotor referred to as estimated (221) by locking between the real and the estimated angular positions using a feedback loop known as a “tracking” loop (214-216, 215-207). The device may relate to a polyphase rotary electrical machine containing such a device.
REFERENCES:
patent: 5006768 (1991-04-01), Rozman
patent: 5182500 (1993-01-01), Shimada
patent: 2008/0309266 (2008-12-01), Chemin et al.
patent: 1 172 925 (2002-01-01), None
patent: 2 896 638 (2007-07-01), None
patent: WO 2006/010864 (2006-02-01), None
Bernard François-Xavier
Doffin Hugues
Louise Christophe
Berenato & White LLC
Dunn Drew A
Henson Mi'schita'
Valeo Equipements Electriques Moteur
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