ALEXANDRIA, Va., May 18 -- United States Patent no. 11,333,131, issued on May 17, was assigned to VESTAS WIND SYSTEMS A/S (Aarhus N, Denmark).
"Method of identifying a fault in a system of gears in a wind turbine" was invented by Pattabiraman Trichy Ramakrishnan (Chennai, India) and Mallikarjun Narayanpur (Karnataka, India).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method of identifying a fault in a system of gears in a wind turbine is provided. The method determines two or more centre harmonic frequency amplitudes according to vibrations of the system of gears and determines a plurality of sideband amplitudes of each of the centre harmonic frequency amplitudes. Further, the method sums the centre harmonic frequency amplitudes to calculate a total centre harmonic frequency amplitude and sums each of the sideband amplitudes of the centre harmonic frequency amplitudes to calculate a total sideband amplitude. The method then determines a value indicative of damage incurred by the system of gears based upon the first centre harmonic frequency amplitude and the average sideband amplitude."
The patent was filed on May 4, 2017, under Application No. 16/098,682.
*For further information, including images, charts and tables, please visit: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&co1=AND&d=PTXT&s1=11333131&OS=11333131&RS=11333131
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