ALEXANDRIA, Va., June 10 -- United States Patent no. 12,294,321, issued on May 6, was assigned to Ford Global Technologies LLC (Dearborn, Mich.).

"Methods and system for estimating electric machine position offset" was invented by Yingfeng Ji (Northville, Mich.), Yang Xu (Canton, Mich.), Michael W. Degner (Novi, Mich.) and Jiyao Wang (Canton, 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, the drive system is operated by suppling a pulsed torque current command while supplying a zero flux current command. The torque current command the flux current command make up winding current co...