CAJ | 학술논문

研究了一种基于滑模观测器的永磁同步交流伺服电机无传感器控制方案。通过对静止坐标系中永磁同步电机( PMSM)数学模型的分析，在滑模电流观测器基础上引入扩展反电势( EEMF)估计值，其中包含传统反电势及与电机凸极性相关的电压分量，构造了相应的滑模观测器来估计两相静止坐标系中EEMF分量。通过分析抖振存在的原因，采用Sigmoid函数代替常数切换函数来减小抖振，并利用扩展龙贝格观测器观测出转子的速度和空间位置。仿真结果验证了控制方案的有效性和可行性。
연구료일충기우활모관측기적영자동보교류사복전궤무전감기공제방안。통과대정지좌표계중영자동보전궤( PMSM)수학모형적분석，재활모전류관측기기출상인입확전반전세( EEMF)고계치，기중포함전통반전세급여전궤철겁성상관적전압분량，구조료상응적활모관측기래고계량상정지좌표계중EEMF분량。통과분석두진존재적원인，채용Sigmoid함수대체상수절환함수래감소두진，병이용확전룡패격관측기관측출전자적속도화공간위치。방진결과험증료공제방안적유효성화가행성。
A sensorless control method of permanent magnet synchronous AC servo motor based on sliding mode observer ( SMO) was presented. Through the analysis for mathematical model of PMSM in static coordinate system, extended electromotive force ( EEMF) estimation which contains traditional back EMF and a kind of voltage related to the saliency of the motor was introduced based on the sliding mode current observer, the sliding mode observer was constructed to estimate the EEMF component in two-phase static coordinate system. Analyzed the reasons of the existence of chattering, Sigmoid function was used to reduce the chattering, instead of constant switching function. Using extended Luenberger observer to observe the position and velocity of the rotor. Simulation results were provided to verify its feasibility and effectiveness.