ALEXANDRIA, Va., March 12 -- United States Patent no. 12,249,936, issued on March 11, was assigned to ORIENTAL MOTOR Co. LTD. (Tokyo).
"Motor control device" was invented by Hikaru Umino (Tsukuba, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A motor control device is provided, which drives a two-phase synchronous motor. The motor control device includes: control current waveform generating means which generates a control current waveform by superposing a fundamental sinusoidal wave and a reluctance torque correction waveform that suppresses the fluctuation of the reluctance torque of the two-phase synchronous motor; and current control signal generating means which generates a current control signal ...