ALEXANDRIA, Va., June 16 -- United States Patent no. 12,308,779, issued on May 20, was assigned to Cummins Inc. (Columbus, Ind.).
"Torque ripple compensation in a motor control system" was invented by Akm Arafat (Blaine, Minn.), Bradford K. O. Palmer (Ham Lake, Minn.), S. Dakshina Murthy-Bellur (Plymouth, Minn.) and Minyu Cai (Roseville, Minn.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for operating a motor control system to dynamically compensate for low-frequency and/or high-frequency torque ripple. Embodiments include receiving an input command, receiving drive feedback signals representative of drive currents in a motor, identifying harmonics in the drive feedback signals representative of m...