ALEXANDRIA, Va., Jan. 29 -- United States Patent no. 12,212,255, issued on Jan. 28, was assigned to HITACHI ASTEMO LTD. (Ibaraki, Japan).
"Electric motor control device, vehicle, and electric motor control method" was invented by Shun Taniguchi (Tokyo), Kentaro Matsuo (Hitachinaka, Japan), Kenichi Yoshida (Hitachinaka, Japan) and Toshiyuki Ajima (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided are an electric motor control device and an electric motor control method with high reliability capable of performing noise reduction control (or sensorless control) by superimposing a radio-frequency voltage and capable of performing compensation of a dead time of an inverter with a minimum necessary con...