US Patent Issued to GM Global Technology Operations on Dec. 30 for "Sensorless backup for motor speed and position" (Michigan Inventors)

ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,508,914, issued on Dec. 30, was assigned to GM Global Technology Operations LLC (Detroit).

"Sensorless backup for motor speed and position" was invented by Michael Duncan Swartz (Waterford, Mich.), Young Joo Lee (Rochester, Mich.), Brian J. Gallert (Waterford, Mich.) and Anno Yoo (Rochester, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method and system are contemplated for determining a final speed and position of a motor used in an electric vehicle. The final speed and position is calculated as a function of a sensed position when a resolver of a position system is available and as a function of a sensorless position when the resolver is una...