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. 07, 2010
Filed:
Jun. 28, 2007
Applicants:
Khwaja M. Rahman, Troy, MI (US);
Edward L. Kaiser, Orion, MI (US);
Matthew D. Laba, Oakland, MI (US);
Inventors:
Khwaja M. Rahman, Troy, MI (US);
Edward L. Kaiser, Orion, MI (US);
Matthew D. Laba, Oakland, MI (US);
Assignee:
GM Global Technology Operations, Inc., Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/34 (2006.01); G01R 23/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
Methods and systems for evaluating a permanent magnet motor are provided. The method includes the steps of spinning a rotor of the permanent magnet motor; determining a total harmonic distortion of the permanent magnet motor; and comparing the determined total harmonic distortion of the permanent magnet motor with a baseline total harmonic distortion.