The Speed and Position Sensorless Control of PMSM using the Sliding Mode Observer with the Estimator of Stator Resistance

고정자 저항 추정기를 갖는 슬라이딩 모드 관측기를 이용한 영구자석 동기전동기의 속도 및 위치 센서리스제어

This paper presents a new speed and position sensorless control method of permanent magnet synchronous motors based on the sliding mode observer. The sliding mode observer structure and its design method are discussed. Also, Lyapunov functions ar chosen for determining the adaptive law for the speed and the stator resistance estimator. The effectiveness of the proposed observer is confirmed by the computer simulation.