CONTROL AND ERROR CORRECTION METHOD OF ANGULAR POSITION ESTIMATION FOR PERMANENT MAGNET SYNCHRONOUS MOTORS

摘要

PURPOSE: A control and error correction method of angular position estimation for permanent magnet synchronous motors is provided to control a motor by using the position of a rotor. CONSTITUTION: A location estimating unit(310) estimates the position of the rotor in an electric motor(10). A voltage is applied to the electric motor. The current measurement area(320) measures the current according to the applied voltage. A current measuring unit(320) measures current according to applied voltage. The location error calculation unit(330) calculates the error of the location of a real rotor and the location of an estimated rotor. A location compensation unit(340) compensates the location of the estimated rotor.