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RISS 인기검색어
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- 저자 : 손주범(Ju-Beom Son) (검색결과 2 건)
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PD -슬라이딩 모드 제어의 절환을 통한 강인한 SPMSM 속도 제어기 설계
손주범(Ju-Beom Son),서영수(Young-Soo Seo),이장명(Jang-Myung Lee) 제어로봇시스템학회 2010 제어·로봇·시스템학회 논문지 Vol.16 No.3
The paper proposes a new type of robust speed control strategy for permanent magnet synchronous motor by using PD-sliding mode hybrid control. The PD control has a good performance in the transient region while the sliding mode controller provides the robustness against system uncertainties. Taking advantages of the two control strategies, the proposed control method utilizes the PD control in the approaching region to the sliding surface and the sliding mode control near at the sliding surfaces. The chattering problem of the sliding mode controller is eliminated by applying the saturation function for the switching function of the sliding mode control. The stability of the sliding mode control is verified by using Lyapunov function with the proper selection of variable gains. It is shown that with this simple switching algorithm, stability of the overall hybrid control system is ensured. Through the simulations, the PD-sliding mode algorithm is shown to have a good performance in the transient response as well as being robust against disturbances. The robustness of the PD-sliding mode algorithm is further demonstrated against various external disturbances in the real experiments of SPMSM motor control.
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고속 슬라이딩모드 관측기를 이용한 PMSM 센서리스 속도제어
손주범(Ju-Beom Son),김홍렬(Hong-Ryel Kim),서영수(Young-Soo Seo),이장명(Jang-Myung Lee) 제어로봇시스템학회 2010 제어·로봇·시스템학회 논문지 Vol.16 No.3
The paper proposes a sensorless speed control strategy for a PMSM (Permanent Magnet Synchronous Motor) based on a new SMO (Sliding Mode Observer), which substitutes a signum function with a sigmoid function. To apply robust sensorless control of PMSM against parameter fluctuations and disturbance, the high speed SMO is proposed, which estimates the rotor position and angular velocity from the back EMF. The low-pass filter and additional position compensation of the rotor are used to reduce the chattering problem commonly found in sliding mode observer with signum function, which becomes possible by applying the sigmoid function with the control of a switching function. Also the proposed sliding mode observer with the sigmoid function has better efficiency than the conventional sliding mode observer since it adjusts the observer gain by variable boundary layer and estimates the stator resistance. The stability of the proposed sliding mode observer is verified by the Lyapunov second method in determining the observer gain. The validity of the proposed high speed PMSM sensorless velocity control has been demonstrated by real experiments.
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