US Patent Issued to TMEIC on May 6 for "Drive system and control method" (Japanese Inventor)

ALEXANDRIA, Va., June 10 -- United States Patent no. 12,294,322, issued on May 6, was assigned to TMEIC Corp. (Tokyo).

"Drive system and control method" was invented by Takumi Ito (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A drive system according to an aspect of the embodiment includes a first phase estimation unit, a second phase estimation unit, a state determination unit, and a drive control unit. The first phase estimation unit generates a first phase obtained by estimating a phase of a rotor on the basis of an initial phase at a startup stage of the synchronous motor. The second phase estimation unit generates a second phase obtained by estimating the phase of the rotating rotor on the basis...