US Patent Issued to Ford Global Technologies on May 19 for "Methods and system for electric machine position offset estimation" (Michigan Inventors)

ALEXANDRIA, Va., May 19 -- United States Patent no. 12,633,853, issued on May 19, was assigned to Ford Global Technologies LLC (Dearborn, Mich.).

"Methods and system for electric machine position offset estimation" was invented by Xuemei Sun (Canton, Mich.), Yang Xu (Canton, Mich.) and David Michael Bevan (Northville, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Systems and methods for operating an electric drive system for an electric or hybrid vehicle is described. In one example, an angle error between an electric machine rotor reference position and an electric machine position sensor reference position is estimated when high voltage is present and when zero torque is commanded of the electric ma...