• 제목/요약/키워드: Resolver

검색결과 111건 처리시간 0.038초

Compensation of Position Error due to Amplitude Imbalance in Resolver Signals

  • Hwang, Seon-Hwan;Kwon, Young-Hwa;Kim, Jang-Mok;Oh, Jin-Seok
    • Journal of Power Electronics
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    • 제9권5호
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    • pp.748-756
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    • 2009
  • This paper presents a compensation algorithm for position error due to an amplitude imbalance between resolver output signals. Resolvers are typically used to obtain absolute position information for motor drive systems in severe environments. Position error is caused by an amplitude imbalance of the resolver output signals. As a result, the d- and q-axis currents of synchronous reference frame have periodic ripples in the stator fundamental frequency in permanent magnet synchronous motor (PMSM) drive systems. Therefore, this paper proposes a compensation algorithm to reduce the position error generated by the amplitude imbalance. The proposed method does not require any additional hardware, and reduces computation time with a simple integral operation according to rotor position. In addition, the position error can be directly compensated for by the estimated position error. The effectiveness of the proposed compensation algorithm is verified through several simulations and experiments.

레졸버를 이용한 BLDC 모터의 드라이브 개발 (Development of Drive for BLDC Motor Using Resolver)

  • 이근유;이충환;김상봉;권순재
    • 동력기계공학회지
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    • 제3권2호
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    • pp.64-69
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    • 1999
  • The paper shows a result for development of BLDC motor drive by using a resolver as position detection sensor. The developed drive use a method detecting rotor position based on HSI interrupt function of microprocessor without a specialized counting circuit. The algorithm generating three-phase PWM wave to change switching voltage and current is realized based on single chip microprocessor. The PWM generating part and position counting circuit are realized by software technique without usage of conventional analogue circuit or object-oriented chips. So the drive system become compact. The effectiveness of the developed drive is verified by experimented results of speed response for step reference input.

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2축 BLDC 전동기 제어를 위한 듀얼코어 DSP(TMS320F28377D)를 이용하는 속도 제어 시스템 설계 (Speed control system design using dual core DSP(TMS320F28377D) for the 2 Axis BLDC motor control)

  • 이동주;김희철;이동현;최중경
    • 한국정보통신학회:학술대회논문집
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    • 한국정보통신학회 2017년도 추계학술대회
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    • pp.232-234
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    • 2017
  • 본 연구에서는 BLDC 모터 2축 동시 제어를 위해 듀얼코어 프로세서를 이용하여 제어기를 설계하였다. 제어기의 중앙처리 장치로는 TI사의 최신 듀얼코어 DSP인 TMS320F28377D를 사용하였고, BLDC 모터는 고신뢰성을 가지고 있는 레졸버(Resolver) 위치 및 속도센서 내장형 모터로 선정하였다. 구동기는 IPM(SCM1245MF)을 이용하여 설계하였다.

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레졸버 형상 변화에 따른 각도정보 선형성 분석 (A Study of Linearity for Angle Information according to Resolver Shape)

  • 류동석;성기용;황수진;황점굉;김민규;김기찬;김윤현
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2011년도 제42회 하계학술대회
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    • pp.876-877
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    • 2011
  • Variable Reluctance(VR) 레졸버는 엔코더를 대신해 Hybrid Electric Vehicle (HEV) / Electrical Vehicle(EV) 및 자동화 산업 전반에서 위치센서로써 사용되고 있다. VR 레졸버는 두 개의 출력신호(SIN, COS)를 발생시키며, Resolver-to-Digital Convert(RDC) 알고리즘을 통하여 위치신호로써 변환된다. 위치센서로써의 VR 레졸버는 무엇보다도 회전자의 정확한 위치를 찾아내는 것이 중요하다. 위치 정보의 오류를 발생시키는 원인으로는 다양한 것들이 있다. 본 논문에서는 VR 레졸버 형상을 변화시킴으로써 인해 레졸버를 통해 나온 출력신호에 포함된 각도정보의 정밀도 향상을 위해 FEM 해석을 통해 연구 및 분석 하였다.

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구형파 2-Hall Sensor를 이용한 영구자석형 동기전동기 벡터 제어의 정역회전을 위한 회전자 위치 추정 알고리즘 (Rotor Position Estimating Algorithm for PMSM Vector Control Using Rectangular 2 Hall Sensors)

  • 공태웅;이정효;유재성;이원철;원충연
    • 전력전자학회:학술대회논문집
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    • 전력전자학회 2007년도 추계학술대회 논문집
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    • pp.154-156
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    • 2007
  • This paper proposes new vector control method that using two rectangular hall sensors instead of using the expensive encoder and resolver. The proposed method is similar to T-method. But the proposed method measures the speed using two hall sensors signals instead of encoder signal. The proposed new speed estimation method is stable under the rated speed range. This algorithm will be able to moderate prices of the whole system and apply for the unfit place for use encoder and resolver.

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JOINT POSITION COMTROL SYSTEM FOR FARA ROBOTS OF SAMSUNG ELECTROICS

  • Kim, Hyo-Kyu;Kim, Dong-Il;Kim, Sungkuwn
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 1990년도 한국자동제어학술회의논문집(국제학술편); KOEX, Seoul; 26-27 Oct. 1990
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    • pp.913-916
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    • 1990
  • In this paper, attempts have been made to control AC synchronous servo motor used as actuators of joints of the FARA robot with high dynamic performance and precise positioning. The AC synchronous servo motors used in FARA robots have resolves as position sensors. Resolver to digital converters are used in order to obtain the information of rotor speed and position from resolver outputs. The proposed joint position control system consists of four speed controller and one position controller. Analog methods are used in the position controller, while digital methods are used in the position controller. For precise position control, PID control algorithm and interpolation functions are executed in two 16 bit microprocessors with sampling rate 2ms. Experimental results show that the proposed joint position control system can be effectively applied to industrial robots in order to obtain high dynamic performance and precise positioning. The proposed joint position control system is being used in the control of FARA robots of Samsung Electronics.

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홀센서를 이용한 모노레일 PMSM 견인전동기의 벡터제어 (Vector control of Monorail PMSM traction motor using the hall-effect sensor)

  • 손동혁;김명수;최다운;조윤현
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2010년도 춘계학술대회 논문집
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    • pp.1366-1370
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    • 2010
  • This paper supposes the vector control algorithm to estimate the rotor position of permanent magnet synchronous traction motor using the hall-effect sensor. The hall-effect provides 60 electrical degrees resolution in rotor position sensing and it is very low resolution. The algorithm makes resolution high as optical encoders or electromagnetic resolver. If necessary, the reference rotor position angle is controlled by adjusting the variable. When a rotor position sensor such as either a optical encoder or a electromagnetic resolver is misalignment, it is useful to align with those. The method on adjusting the reference rotor position angle can compensate for misalignment error degrees by 60 electrical degrees.

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리졸버를 사용한 브러쉬 없는 직류전동기의 운전특성과 주파수 제한기를 가진 'ON-OFF'전류제어 방식 (ON-OFF' Current Control Method with Frequency Limiter and Operating Characteristics of Brushless DC Motors Using Resolver)

  • 홍성수;권봉환;윤명중
    • 대한전기학회논문지
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    • 제35권9호
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    • pp.396-402
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    • 1986
  • Although the structure of the brushless DC motor is similar to the one of the permanent magnet synchronous motor, its operating characteristics are the same as those of the permanent magnet DC motor. This is the reason that the commutators and brushes in the permanent magnet DC motor can be replaced by the power semiconductor devices and rotor position sensors for the brushless DC motor. In this paper, a current control method is presented to make a sinusoidal current waveform for constant torque generation and the operating characteristics of the brushless DC motor using the resolver as the rotor position sensor is also presented and experimented.

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전동기 제어를 위한 고성능 릴럭턴스 레졸버 설계 (High Performance Reluctance Resolver Design for Motor Control)

  • 이태연;남광희
    • 전력전자학회:학술대회논문집
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    • 전력전자학회 2019년도 추계학술대회
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    • pp.108-109
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    • 2019
  • 현대 산업기기의 큰 비중을 차지하는 전동기는 벡터 제어를 위해 각도 정보를 필수적으로 요구한다. 따라서, 엔코더와 권선형 레졸버 그리고 릴럭턴스 레졸버와 같은 많은 각도 센서가 활발히 사용되고 있다. 센서리스와 같이 센서를 이용하지 않고 각도를 추정하는 연구도 많이 진행되고 있지만, 높은 안정성을 요구하는 시스템에서는 여전히 각도 센서가 주를 이루고 있다. 각도 센서 중에서 높은 정확도와 안정성 그리고 내구성을 가지는 레졸버가 각광받고 있으며, 특히 릴럭턴스 레졸버(Variable Reluctance Resolver)가 많이 사용된다. 본 논문은 전동기의 제어 성능과 안정성을 높이기 위한 고성능 레졸버 설계의 내용을 담고 있으며, 기존의 릴럭턴스 레졸버와 달리 레졸버 고정자의 치폭을 변조하여 각도 오차를 줄이는 내용을 다루고 있다.

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뱅뱅형 위상 비교기를 이용한 새로운 고속 추적 레졸바/디지털 변환기 (A Resolver-to-Digital Converter Using a Bang-Bang Type Phase Comparater)

  • 임충혁;하인중;고명삼;오정현
    • 대한전기학회논문지
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    • 제41권8호
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    • pp.893-901
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    • 1992
  • In this paper, we propose a new resolver-to digital(R/D) conversion method, in which a bang-bang type phase comparator is employed for fast tracking. We eliminate from the R/D conversion loop the low-pass filter which is needed to reject carrier signal and noise. Instead, we employ two prefilters outside the R/D conversion loop that take the role of the low-pass filter. Thereby, we can construct a fast and accurate tracking R/D converter. Some simulation and experimental results as well as mathematical performance analysis are presented to demonstrate the superior tracking performance of our R/D converter over conventional tracking R/D converters.

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