ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,706,557, issued on Aug. 11, was assigned to ABB SCHWEIZ AG (Baden, Switzerland).
"Method of identifying parameters of a motor system" was invented by Omer Ikram Ul Haq (Surahammar, Sweden), Rahul Kanchan (Vasteras, Sweden) and Pedro Rodriguez (Vasteras, Sweden).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method of identifying parameters of a motor system having an electric motor and a control system for vibration reduction, includes: sweeping a frequency of an oscillating reactive torque injected into the motor, determining a natural frequency of the motor system, which is the frequency at which the reactive torque produces maximum amplitude of a vi...