US Patent Issued to Amazon Technologies on Aug. 26 for "Sensorless propeller damage detection systems and methods" (Washington Inventors)

ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,397,908, issued on Aug. 26, was assigned to Amazon Technologies Inc. (Seattle).

"Sensorless propeller damage detection systems and methods" was invented by Xiaoqi Wang (Bellevue, Wash.), Lizon Maharjan (Seattle), Tausif Husain (Maple Valley, Wash.), Sheverria Antony Aikens (Mill Creek, Wash.) and Frederic Pierre Lacaux (Kirkland, Wash.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Sensorless propeller damage detection systems and methods may receive and process motor quadrature-axis currents to extract current ripples and fast average current values. In addition, the current ripples and fast average current values may be further processed to generated ...