ALEXANDRIA, Va., July 30 -- United States Patent no. 12,375,015, issued on July 29, 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 an embodiment includes a rotor phase detection unit, a phase estimation unit, a phase error adjustment unit, and a drive control unit. The rotor phase detection unit detects a phase of a rotor of a synchronous motor and outputs phase information indicating the detected phase. The phase estimation unit generates an initial phase command of defining a position of the rotor of the synchronous motor by using a correction amount for correcti...