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:
Mar. 20, 2001
Filed:
Jul. 22, 1999
Applicant:
Inventors:
Aidan W. Clark, Cincinnati, OH (US);
Kenneth F. Cook, Cincinnati, OH (US);
Robert D. Wittenbach, Lebanon, OH (US);
Deepak M. Kamath, Cincinnati, OH (US);
Assignee:
General Electric Company, Cincinnati, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H 3/18 ;
U.S. Cl.
CPC ...
H02H 3/18 ;
Abstract
A method for detecting fault in a resolver generating a sine voltage and a cosine voltage. The method includes obtaining a sum of a square of the sine voltage and a square of the cosine voltage. The sum is filtered through a first filter having a first time constant to generate a first filter output. The sum is also filtered through a second filter having a second time constant to generate a second filter output. The first filter output and second filter output are compared to detect a fault in the resolver.