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:
Jan. 13, 2015
Filed:
May. 05, 2011
Cédric Savio, Clermont-Ferrand Cedex, FR;
Jean-louis Linda, Clermont-Ferrand Cedex, FR;
Bertrand Vedy, Clermont-Ferrand Cedex, FR;
Cédric Savio, Clermont-Ferrand Cedex, FR;
Jean-Louis Linda, Clermont-Ferrand Cedex, FR;
Bertrand Vedy, Clermont-Ferrand Cedex, FR;
Compagnie Generale des Establissements Michelin, Clermont-Ferrand, FR;
Michelin Recherche et Technique S.A., Granges-Paccot, CH;
Abstract
An apparatus for measuring an error in a resolver includes a first calculator that perform an inverse Park transform based on voltages Uq and Ud at an output of PI current regulators, and delivers voltage setpoint signals PWM, PWM, PWMto a power stage via a line on which a DC voltage Ubus-dc is available. The power stage generates a three-phase system of voltages U, U, Ufor energizing an electric machine. The apparatus also includes a signal processor that provides an angle measurement α. Based on currents MesI, MesI, MesIof the three phases, and on a rotor angle α, a second calculator of the device delivers values MesId, MesIq used by the first calculator. A PI voltage regulator delivers an angle αfor correcting the error by regulating a setpoint value for the voltage Ud.