ALEXANDRIA, Va., March 12 -- United States Patent no. 12,249,932, issued on March 11, was assigned to Mitsubishi Electric Research Laboratories Inc. (Cambridge, Mass.).

"System and method for controlling an electric motor without a position sensor" was invented by Anantaram Varatharajan (Cambridge, Mass.) and Yebin Wang (Cambridge, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure discloses a controller and a method for controlling an electric motor. The controller comprises a feedback controller configured to generate a reference voltage vector, a hybrid flux observer configured to estimate a flux error vector based on a difference between a first stator flux linkage observed and a...