• 제목/요약/키워드: Adaptive speed observer

검색결과 156건 처리시간 0.021초

적응 슬라이딩 옵저버를 이용한 유도전동기의 센서없는 벡터제어 (Sensor-Less Vector Control of Induction Motor using the Adaptive Sliding Observer)

  • 박은제;김영석
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1993년도 하계학술대회 논문집 B
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    • pp.673-676
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    • 1993
  • The field-oriented control of induction motor without speed sensor has been widely studied. This paper proposes the new design method of adaptive sliding observer for induction motor, which include the rotor speed identification together with the rotor flux estimation. The proposed adaptive observer has advantage of their global stability which is developed on some assumption. It is easy to analyse because the identifier is seperated from the controller. Finally, the chattering which is caused by switching is reduced by new control scheme, and the validaity of the adaptive algorithm is verified by simulation.

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적응 퍼지제어기에 의한 IPMSM 드라이브의 쎈서리스 벡터제어 (Sensorless Vector Control of IPMSM Drive with Adalptive Fuzzy Controller)

  • 김중관;박병상;정동화
    • 대한전기학회논문지:전기기기및에너지변환시스템부문B
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    • 제55권2호
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    • pp.98-106
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    • 2006
  • This paper proposes to position and speed control of interior Permanent magnet synchronous motor(IPMSM) drive without mechanical sensor. Also, this paper develops a adaptive fuzzy controller based fuzzy logic control for high performance of PMSM drives. In the proposed system, fuzzy control is used to implement the direct controller as well as the adaptation mechanism. A Gopinath observer is used for the mechanical state estimation of the motor. The observer was developed based on nonlinear model of IPMSM, that employs a d-q rotating reference frame attached to the rotor. A Gopinath observer is implemented to compute the speed and position feedback signal. The validity of the proposed scheme is confirmed by various response characteristics.

적응 슬라이딩 모드 관측기를 이용한 SRM의 속도 및 위치 센서 없는 제어 (Adaptive Sliding Mode Observer for the Control of Switched Reluctance Motors without Speed and Position Sensors)

  • 신재화;양이우;김영석
    • 대한전기학회논문지:전기기기및에너지변환시스템부문B
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    • 제49권11호
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    • pp.763-770
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    • 2000
  • The speed and position information of the rotor are required in the speed control of SRM(Switched Reluctance Motors). This information is generally provided by shaft encoder or resolver. It is weak in the dusty, high temperature, and EMI environment. Consequntly, much attention has been given to SRM control for eliminationating the position and speed sensors. In this paper, a new estimation algorithm for the rotor position and speed for SRM drives is described. The algorithm is implemented by the sliding mode observer. The stability and robustness of the sliding observer for the parameter variations of the SRM are proved by variable structure control theory. Speed control of the SRM is accomplished by the estimated speed and position. Experiment results verify that the mode observer is able to estimate the speed and position well.

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피지동조 고이득 관측기를 이용한 속도센서없는 직류 서보전동기의 속도제어 (Speed Control Of Sensorless DC Servo Motor Using Fuzzy-Tuning High-Gain Observer)

  • 강성호;윤광호;김상훈;김낙교;남문현
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2003년도 학술회의 논문집 정보 및 제어부문 B
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    • pp.480-483
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    • 2003
  • This paper deals with speed control of Sensorless DC servo motor using a FTHGO(FuzEy-Tuning High Gain observer). In this paper, we improved the problem from row speed section, the problem of sensor for detecting speed of motor, using FTHGO(Fuzzy-Tuning High-Gain Observer) with fuzzy control technique which is a class of adaptive control technique. In order to verify the performance of the FTHGO(Fuzzy-Tuning High Gain Observer) which is proposed in this paper, it is proved from the experiment to compare the case with a speed sensor to the case with FTHGO(Fuzzy-Tuning High Gain observer) in the speed control of DC servo motor.

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비선형 외란 관측기를 이용한 유도전동기의 강인 적응 백스테핑 제어 (Robust Adaptive Backstepping Control of Induction Motors Using Nonlinear Disturbance Observer)

  • 이은욱
    • 전기학회논문지P
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    • 제57권2호
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    • pp.127-134
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    • 2008
  • In this paper, we propose a robust adaptive backstepping control of induction motors with uncertainties using nonlinear disturbance observer(NDO). The proposed NDO is applied to estimate the time-varying lumped uncertainty which are derived from unknown motor parameters and load torque, but NDO error does not converge to zero since the derivate of lumped uncertainty is not zero. Then the fuzzy neural network(FNN) is presented to estimate the NDO error such that the rotor speed to converge to a small neighborhood of the desired trajectory. Rotor flux and inverse time constant are estimated by the sliding mode adaptive flux observer. Simulation results are provided to verify the effectiveness of the proposed approach.

적응 적분바이너리 관측기를 이용한 돌극형 영구자석 동기전동기 센서리스 속도제어 (A Sensorless Speed control of IPMSM using an Adaptive Integral Binary Observer)

  • 이형;김영조;강형석;김영석
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2006년도 춘계학술대회 논문집 전기기기 및 에너지변환시스템부문
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    • pp.229-231
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    • 2006
  • The paper presents a sensorless speed control of interior permanent magnet synchronous motors using an adaptive integral binary observer in view of composition with a main loop regulator and an auxiliary loop regulator. The binary observer has a property of the chattering alleviation in the constant boundary layer; however, the steady state estimation accuracy and robustness are dependent upon with width of the constant boundary. In order to improve the steady state performance of the binary observer, the binary observer is formed by adding extra integral dynamic to the switching hyperplane equation.

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Improvement of Conventional Sliding Mode Observer for Full Range Sensorless Control of a PMSM

  • Wibowo, Wahyu Kunto;Jeong, Seok-Kwon
    • 동력기계공학회지
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    • 제19권4호
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    • pp.89-96
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    • 2015
  • This paper investigates some strategies to overcome the chattering problem of the conventional sliding mode observer (SMO) and to improve the rotor position estimation performance for full range sensorless control of a PMSM. An adaptive observer gain based on the Lyapunov's stability criterion and a cascade low pass filter with advanced phase delay compensation were proposed to reduce the chattering problem and to strengthen the filtering capability of the SMO. Several cases studies through experiments were carried out to confirm conventional SMO's problems and effectiveness of the proposed strategies. The experimental results show that the proposed method gives precise estimation on speed and rotor position when the motor rotates on 2% of its rated speed.

Position Control for Interior Permanent Magnet Synchronous Motors using an Adaptive Integral Binary Observer

  • Kang, Hyoung-Seok;Kim, Cheon-Kyu;Kim, Young-Seok
    • Journal of Electrical Engineering and Technology
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    • 제4권2호
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    • pp.240-248
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    • 2009
  • An approach to control the position for an interior permanent magnet synchronous motor (IPMSM) based on an adaptive integral binary observer is described. The binary controller with a binary observer is composed of a main loop regulator and an auxiliary loop regulator. One of its key features is that it alleviates chatter in the constant boundary layer. However, steady state estimation accuracy and robustness are dependent upon the thickness of the constant boundary layer. In order to improve the steady state performance of the binary observer and eliminate the chattering problem of the constant boundary layer, a new binary observer is formed by adding extra integral dynamics to the existing switching hyperplane equation. Also, the proposed adaptive integral binary observer applies an adaptive scheme because the parameters of the dynamic equations such as the machine inertia and the viscosity friction coefficient are not well known. Furthermore, these values can typically be easily changed during normal operation. However, the proposed observer can overcome the problems caused by using the dynamic equations, and the rotor position estimation is constructed by integrating the rotor speed estimated with a Lyapunov function. Experimental results obtained using the proposed algorithm are presented to demonstrate the effectiveness of the approach.

모델 기준 적응 시스템(MRAS) 부하 토크 관측기를 이용한 유도 전동기의 속도 제어 (Induction Motor Speed Controlf MRAS-Based Load-Torque Observer)

  • 조문택;이충식;이세훈
    • 융합신호처리학회논문지
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    • 제8권2호
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    • pp.119-123
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    • 2007
  • 본 논문은 유도전동기의 센서리스 속도제어기에 대한 연구이다. 유도전동기의 속도의 제어방법은 자속추정을 위한 기준모델로써 부하-토크 관측기를 이용한 MRAS(Model Reference Adaptive System)를 기초로 하였으며, 전형적인 MRAS 제어기 특성의 속도응답은 부하 토크 외란의 변화에 영향을 미친다. 따라서 제안된 시스템에서의 부하-토크 관측기를 사용한 속도제어 특성은 부하 토크 외란에 의한 영향을 받지 않는다. 이러한 제어 알고리즘을 MATLAB의 SIMULINK를 통해 전체 시스템을 모델링하여 시뮬레이션 한 결과는 유도 전동기의 다양한 부하 구동 적용에 대한 슬라이딩 속도 제어기의 효과적인 개선이 되었음을 알 수 있었다. 그러므로 이러한 제어 방법들이 산업 응용분야에 확대되어 적용되었으면 한다.

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유도전동기 센서리스 벡터제어를 위한 적응슬라이딩모드 제어기 (Sensorless Vector Control for IM Adaptive Sliding Mode Controller)

  • 김영춘;조문택;주해종
    • 한국산학기술학회논문지
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    • 제12권11호
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    • pp.5143-5149
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    • 2011
  • 본 논문은 슬라이딩 모드 관측기를 이용한 적응 속도 센서리스 벡터제어에 대해 제안한다. 적응 슬라이딩 모드 관측기는 전압식을 이용한 전동기 고정자 기준좌표에 의해 회전자 자속성분이 관측된다. Lyapunov 함수에 의해 얻어지는 추가적인 관계로부터 전동기의 속도가 구해진다. 성능 확인을 위해 전통적인 PI 제어기와 슬라이딩 모드 관측기의 추가적인 특성에 대해 시뮬레이션과 실험을 통해 비교하였다. 분석과 비교에 의한 결과에 의하면 시스템의 유용성을 확인할 수 있었다.