ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,470,159, issued on Nov. 11, was assigned to Fanuc Corp. (Yamanashi, Japan).
"Control device for synchronous motor" was invented by Tatsuya Senoo (Yamanashi, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a control device for a synchronous motor, the control device including a DC excitation command generation unit which generates a command for sending a DC current with a fixed current phase to a synchronous motor, and controls the magnitude of the DC current so as to apply deceleration torque to a rotor of the synchronous motor on the basis of at least one among the angular acceleration and the angular velocity of the rotor; and a magne...