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:
Sep. 25, 2012
Filed:
Sep. 30, 2008
Emad Andarawis Andarawis, Ballston Lake, NY (US);
Wayne Charles Hasz, Pownal, VT (US);
David SO Keung Chan, Niskayuna, NY (US);
David Mulford Shaddock, Troy, NY (US);
John Harry Down, Lanesborough, MA (US);
Samhita Dasgupta, Niskayuna, NY (US);
David Richard Esler, Gloversville, NY (US);
Zhiyuan Ren, Malta, NY (US);
Mahadevan Balasubramaniam, Ballston Lake, NY (US);
Ibrahim Issoufou Kouada, Niskayuna, NY (US);
Emad Andarawis Andarawis, Ballston Lake, NY (US);
Wayne Charles Hasz, Pownal, VT (US);
David So Keung Chan, Niskayuna, NY (US);
David Mulford Shaddock, Troy, NY (US);
John Harry Down, Lanesborough, MA (US);
Samhita Dasgupta, Niskayuna, NY (US);
David Richard Esler, Gloversville, NY (US);
Zhiyuan Ren, Malta, NY (US);
Mahadevan Balasubramaniam, Ballston Lake, NY (US);
Ibrahim Issoufou Kouada, Niskayuna, NY (US);
General Electric Company, Niskayuna, NY (US);
Abstract
Self-calibration of a multiple channel clearance sensor system, which in one embodiment includes at least one sensor for measuring at least one clearance parameter signal between a stationary object and a rotating object of a rotating machine. The sensor output is processed as a clearance parameter by an offset correction section configured to determine an offset error in the clearance parameter signal which is used by a level shifter. The level shifter is also switchably coupled to the clearance parameter signal wherein the output of the level shifter, which may be amplified and digitally converted, is processed by a signal level analyzer to determine a channel gain signal.