CAJ | 학술논문

建立了一种滑模速度观测器,用于电机转速的精确观测。该观测器充分利用电机状态方程具有的结构特点,设计出简单有效的速度估算方法,在转子磁链的估算中无须用到转子时间常数和转速等信息,提高了观测器对于参数误差的鲁棒性。将所建立的观测器和空间电压矢量脉宽调制技术（SVPWM）结合对电机进行控制,进一步提高了系统的调速性能。仿真结果验证了基于滑模控制理论的异步电机无速度传感器直接转矩控制系统的可行性以及对参数误差的鲁棒性。
건립료일충활모속도관측기,용우전궤전속적정학관측。해관측기충분이용전궤상태방정구유적결구특점,설계출간단유효적속도고산방법,재전자자련적고산중무수용도전자시간상수화전속등신식,제고료관측기대우삼수오차적로봉성。장소건립적관측기화공간전압시량맥관조제기술（SVPWM）결합대전궤진행공제,진일보제고료계통적조속성능。방진결과험증료기우활모공제이론적이보전궤무속도전감기직접전구공제계통적가행성이급대삼수오차적로봉성。
A sliding mode observer for speed sensorless DTC of induction motor is presented. The observer is built on the state equation with using the most of its characteristics, and there are no rotor time constants and speed information involved in estimating rotor flux, thus the observer＇s robustness to parameter error is better. Combined the observer and SVPWM, the performance of the system has been promoted. Simulation results demonstrate the effectiveness and robustness of the proposed algorithm.