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:
Aug. 01, 2006
Filed:
Mar. 05, 1999
Yu-to Chen, Niskayuna, NY (US);
Sharon Shihua Liu, Cupertino, CA (US);
Vipin Kewal Ramani, Niskayuna, NY (US);
Nicolas Wadih Chbat, Albany, NY (US);
Yu-To Chen, Niskayuna, NY (US);
Sharon Shihua Liu, Cupertino, CA (US);
Vipin Kewal Ramani, Niskayuna, NY (US);
Nicolas Wadih Chbat, Albany, NY (US);
General Electric Company, Niskayuna, NY (US);
Abstract
A method and system for canceling noise and compressing data from a motor phase angle sensor. In this invention, phase angle data is sampled at a first sampling rate to generate a sampled phase angle. The sampled phase angle signal is sub-sampled at a second sampling rate to generate a sub-sampled phase angle signal which is transformed by subtracting each of the sub-sampled data points of the sub-sampled signal from 90 degrees to generate a transformed signal. The transformed phase angle signal is then convoluted with a wavelet signal to generate a convoluted phase angle signal. Next, a phase angle range signal is generated by calculating the range between the largest and smallest convoluted data points within each of a plurality of segments of the convoluted signal. A moving average calculation is performed on the phase angle range signal to generate a moving average signal.