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:
Apr. 02, 2019
Filed:
Dec. 30, 2014
General Electric Company, Schenectady, NY (US);
Louis Martin Frigo, Brookfield, WI (US);
Melissa Jean Freeman, Oconomowoc, WI (US);
Margaret Ann Wiza, New Berlin, WI (US);
Douglas Link, Lake Mills, WI (US);
Michael Thomas Rose, Wauwatosa, WI (US);
Scott Richard Weber, West Allis, WI (US);
Andrew John Panos, Milwaukee, WI (US);
GENERAL ELECTRIC COMPANY, Schenectady, NY (US);
Abstract
A method that includes deriving a first power spectral density function of a signal input to a ripple cancellation filter; deriving a second power spectral density function of a signal concurrently output from the ripple cancellation filter; frequency shaping the first power spectral density according to a spectral rejection image of the ripple cancellation filter to obtain a test power spectral density; and indicating a degraded performance of the ripple cancellation filter in the event that the test and second power spectral density functions fail to match within pre-determined criteria.