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:
Nov. 13, 2018
Filed:
Sep. 21, 2016
Applicant:
Hamilton Sundstrand Corporation, Charlotte, NC (US);
Inventors:
Huazhen Chai, Caledonia, IL (US);
Dwight D. Schmitt, Rockford, IL (US);
Assignee:
HAMILTON SUNSTRAND CORPORATION, Charlotte, NC (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 31/14 (2006.01); G01R 31/02 (2006.01); G01R 31/00 (2006.01); G01R 31/28 (2006.01); G01R 27/16 (2006.01);
U.S. Cl.
CPC ...
G01R 31/14 (2013.01); G01R 31/003 (2013.01); G01R 31/02 (2013.01); G01R 31/2849 (2013.01); G01R 27/16 (2013.01);
Abstract
A system and method of detecting dampener resistor degradation and failure are provided. The method includes determining a normal operating admittance value of a filter that includes a dampener resistor, injecting a voltage signal with a frequency value at least one order of magnitude different from a filter resonant peak, receiving an admittance output in response the injected voltage signal, and comparing the admittance output with the normal operating admittance value to determine the presence of dampener resistor degradation and failure.