• 제목/요약/키워드: Superposition Principle

검색결과 102건 처리시간 0.024초

중첩의 정리를 이용한 PMSM의 센서리스제어에 관한 연구 (Study On the Sensorless PMSM Control Using the Superposition Theory)

  • 박성준;박한웅;김대웅;백승면;이만형
    • 제어로봇시스템학회논문지
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    • 제8권1호
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    • pp.5-14
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    • 2002
  • This study presents a solution to control a Permanent Magnet Synchronous Motor without sensors based on the superposition principle. Because the proposed method of sensorless theory is very simple to compute the estimated angle, computing time to estimate the angle is shorter than other sensorless method. The use of this system yields enhanced operations, fewer system components, lower system cost, energy efficient control system design and increased efficiency. The performance of a sensorless architecture allows an intelligent approach to reduce the complete system costs of the digital motion control applications using cheaper electrical motors without sensors. This paper deals with an overview of sensorless solutions in PMSM control applications whereby the focus will be on the new controller without sensors and its applications.

중첩의 정리를 이용한 PMSM의 센서리스 재어에 관한 연구 (The study on the Sensorless PMSM Controlusing the Superposition Theory)

  • 홍정표;권순재;김규섭;손무헌;김종달
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2002년도 하계학술대회 논문집 B
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    • pp.756-760
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    • 2002
  • This study presents a solution to control a Permanent Magnet Synchronous Motor without sensors. The control method is the presented superposition principle. This method of sensorless theory is very simple to compute estimated angle. Therefore computing time to estimate angle is shorter than other sensorless method. The use of this system yields enhanced operations, fewer system components, lower system cost, energy efficient control system design and increased efficiency. A practical solution is described and results are given in this Study. The performance of a Sensorless architecture allows an intelligent approach to reduce the complete system costs of digital motion control applications using cheaper electrical motors without sensors. This paper deals with an overview of sensorless solutions in PMSM control applications whereby the focus will be the new Controller without sensors and its applications.

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열전도 환경을 고려한 전장탑재물의 소자 열 해석 (Thermal Analysis of Electronic Devices in an Onboard Unit Considering Thermal Conduction Environment)

  • 김주년;김보관
    • 전자공학회논문지SC
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    • 제43권5호
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    • pp.60-67
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    • 2006
  • 우주 비행체 전자장비의 신뢰도를 예측하고 최적화하기 위해 탑재장치 내 부품의 온도 예측이 필수적으로 요구된다. 본 논문에서는 전자장비 부품의 온도 예측방법에 관해 기술하고 있다. 본 예측 방법은 PCB 기판의 열전도도를 등방성모델로 설정하여 등가 열전도도를 계산하고 열력 모델을 이용하여 열 저항 행렬을 생성하였으며, 중첩의 원리를 이용하여 각 부품들의 온도를 예측하였다. 또한 본 논문의 온도 예측방법을 이용하여 전장품 소자의 열해석 결과와 상용 프로그램을 이용한 온도 계산 결과를 비교 분석하였다.

중첩의 정리를 이용한 PMSM의 센서리스 제어 (The study on the sensorless PMSM control using the superposition theory)

  • 박현주;박성준;김종달;손무헌;김규섭;이일천
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2001년도 학술대회 논문집 전문대학교육위원
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    • pp.120-126
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    • 2001
  • This paper presents a solution to control a PMSM(Permanent Magnet Synchronous Motor) without sensor. The control method is the presented superposition principle. This method of sensorless theory is very simple to compute estimated angle. The use of this system yields enhanced operations, fewer system components, lower system costs, efficient energy control system designs and increased efficiencies. A practical solution is described and its results are given in this study. The performance of a sensorless architecture allows an intelligent approach to reduce the complete system costs of digital motion control applications using the cheaper electrical sensorless motors. This paper deals with an overview of solutions in the sensorless PMSM control applications, whereby the focus will be the new sensorless controller and its applications.

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반 무한체 위의 사각조각 면에 작용하는 접선하중에 의한 반 무한체내의 응력 해석 (The stress field in the body by tangential loading of a rectangular patch on a semi-infinite solid)

  • 이문주;조용주
    • 한국윤활학회:학술대회논문집
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    • 한국윤활학회 1999년도 제29회 춘계학술대회
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    • pp.20-29
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    • 1999
  • The stress field in the body by tangential loading of a rectangular patch on a semi-infinite solid has been solved analytically using Boussinesque's potential function. Its validity was proved by saint-venant's principle in remote region of the and in the vicinity of the surface with superposition of point loads.

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The Stress Field in a Body Caused by the Tangential Force of a Rectangular Patch on a Semi-Infinite Solid

  • Cho, Yong-Joo;Kim, Tae-Wan;Lee, Mun-Ju
    • KSTLE International Journal
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    • 제2권1호
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    • pp.29-34
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    • 2001
  • The stress field in a body caused by the tangential loading of a rectangular patch on a semi-infinite solid has been solved analytically using a potential function. The validity of the results of this study was preyed by Saint-Venant's principle in the remote region and by the superposition of point loads in the vicinity of the surface.

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폴리스티렌의 점탄성 계수에 관한 실험적 연구 (An Experimental study on the Viscoelastic Coefficient of Polystyrene)

  • 윤경환;유봉근
    • 대한기계학회:학술대회논문집
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    • 대한기계학회 2000년도 춘계학술대회논문집A
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    • pp.751-754
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    • 2000
  • Stress relaxation experiments were performed to obtain the material properties to be used in the linear viscoelastic study. Master curve of the modulus of polystyrene were obtained by using the time-temperature superposition principle. Because Shyu and Tobolsky's tensile relaxation modulus master curve or Polystyrene material showed very large difference, in-house data were required to calculate the residual stresses in injection-molded products more accurately. Our own experimental data showed that the master curve Shyu's data should be shifted about two orders in material time coordinate.

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Wave Boundary Layer: Parameterization Technique and Its Proof

  • Belevich, M.;Safray, A.;Lee, Kwi-Joo;Kim, Kyoung-Hwa
    • 한국해양공학회지
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    • 제16권2호
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    • pp.10-20
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    • 2002
  • 본 논문에서는 바다의 자유표면에서 생성되는 항력에 대한 물리적 특성에 대한 연구가 기술되었다. 2차원 파장(Wave Field) 매개변수해석기법(Parametric Analyzing Technique)을 근거로 한 파경계층(Wave Boundary Layer : WBL)의 1차원 모델로서 항력계산과 파경계층의 특성을 추정하였으며 이론의 간략화(Simplifying)에 대한 연구에 주력하였다.

The Energy Absorption of Combined Structure Subjected to Axial Compression

  • J.W.,Lee
    • 대한조선학회지
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    • 제19권4호
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    • pp.1-10
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    • 1982
  • An experimental investigation on the energy absorption of two staged combined structures is presented, which deals with the plastic collapse test as a series of research on soft bow structure involved in a ship collision. The principle of arithmetic superposition of energy absorption is derived upon experimental analysis and based upon the characteristics of the energy absorptions of component structures. This relationship is related to the further approach toward the design of soft bow.

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점탄성 거동을 하는 복합재료 판의 대변위 진동해석 (Nonlinear vibration analysis of viscoelastic laminated plates undergoing large deflection)

  • 김태우;김지환
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 2000년도 추계학술대회논문집
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    • pp.546-552
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    • 2000
  • Dynamic behavior of laminated composite plates undergoing moderately large deflection is investigated taking into account the viscoelastic behavior of material properties. Based on von Karman's non-linear deformation theory and Boltzmann's superposition principle, non-linear and hereditary type governing equations are derived. Finite element analysis and the method of multiple scales is applied to examine the effect of large amplitude on the dissipative nature of viscoelastic laminated plates.

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