The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 13, 2011
Filed:
May. 12, 2009
François-xavier Bernard, Creteil, FR;
Christophe Louise, Alfortville, FR;
Hugues Doffin, Chatenay Malabry, FR;
François-Xavier Bernard, Creteil, FR;
Christophe Louise, Alfortville, FR;
Hugues Doffin, Chatenay Malabry, FR;
Valeo Equipements Electriques Moteur, Creteil, FR;
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 () delivering first signals (-) representing a magnetic field. The device includes means () for generating, from linear combinations of the first signals, first () and second () 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 () by locking between the real and the estimated angular positions using a feedback loop known as a 'tracking' loop (--). The device may relate to a polyphase rotary electrical machine containing such a device.