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:
Nov. 13, 2012
Filed:
Sep. 11, 2009
Applicants:
Nitinkumar R. Patel, Cypress, CA (US);
Yo Chan Son, Torrance, CA (US);
Inventors:
Nitinkumar R. Patel, Cypress, CA (US);
Yo Chan Son, Torrance, CA (US);
Assignee:
GM Global Technology Operations LLC, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 6/18 (2006.01);
U.S. Cl.
CPC ...
Abstract
Methods and apparatus are provided for sensorless control of a permanent magnet motor. The method includes the step of determining a sensorless position signal and a sensorless speed signal in a torque-speed plane in response to phase currents corresponding to currents on one or more of the plurality of phases.