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. 12, 2011
Filed:
Oct. 16, 2008
Kirk A. Lillestolen, East Hartland, CT (US);
James Saloio, Jr., Ludlow, MA (US);
Ronald P. Bauer, Windsor Locks, CT (US);
Kirk A. Lillestolen, East Hartland, CT (US);
James Saloio, Jr., Ludlow, MA (US);
Ronald P. Bauer, Windsor Locks, CT (US);
Hamilton Sundstrand Corporation, Windsor Locks, CT (US);
Abstract
A resolver interface includes separate anti-aliasing filters for sine and cosine signals. The separately filtered signals are then time share multiplexed to a single analog to digital (A/D) converter. Because all of the inputs are fed through the same A/D converter, any error, difference or shift caused by the A/D converter is shared across al of the inputs. A Field Programmable Gate Array (FPGA) and processor are used to digitally filter, demodulate and compute position.