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:
Jul. 14, 2009
Filed:
Oct. 13, 2004
Ketao Liu, Cerritos, CA (US);
Yeong-wei A. Wu, Rancho Palos Verdes, CA (US);
Jeffrey L. Lee, Rancho Palos Verdes, CA (US);
Ketao Liu, Cerritos, CA (US);
Yeong-Wei A. Wu, Rancho Palos Verdes, CA (US);
Jeffrey L. Lee, Rancho Palos Verdes, CA (US);
The Boeing Company, Chicago, IL (US);
Abstract
In accordance with an embodiment of the present invention, a resolver system has at least one resolver and at least one amplifier in electrical communication with each resolver. A reference circuit is in electrical communication with the amplifiers. The reference circuit provides reference signals to the amplifiers. A non-linearity calibration and compensation circuit in communication with each amplifier uses the amplified reference signals to provide scale factors, so as to enhance a precision of the resolver system.