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. 27, 2009
Filed:
Dec. 08, 2004
Applicants:
Kevin M. Mclaughlin, Troy, MI (US);
Joseph D. Miller, Farmington Hills, MI (US);
Inventors:
Kevin M. McLaughlin, Troy, MI (US);
Joseph D. Miller, Farmington Hills, MI (US);
Assignee:
TRW Automotive U.S. LLC, Livonia, MI (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 31/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and apparatus for determining a fault in an electric motor () determines a calculated star voltage (V) of the electric motor. The calculated star voltage (V) is compared to a measured star voltage (V) of the electric motor () to determine a star voltage error (V). The fault in the electric motor () is determined when the star voltage error (V) exceeds a predetermined maximum star voltage error (V).