• 제목/요약/키워드: Linear DC Motor

검색결과 157건 처리시간 0.038초

DLP용 BLDC 모터의 속도 센서리스 제어 (A Sensorless Speed Control of Brushless DC Motor in Digital Lightening Processor using the Linear Quadratic Regulator)

  • 양이우;김영석;김상욱;김현중
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2007년도 제38회 하계학술대회
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    • pp.1102-1103
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    • 2007
  • This Paper presents a solution to control the Brushless DC Motor(BLDCM) in Digital Lightening Processor(DLP) using the Linear Quadratic Regulator(LQR). Generally, The speed of BLDCM in DLP is controlled by the lead angle control or the input voltage control using PAM(Pulse Amplitude Modulation) etc. These control methods have speed overshoot in speed control and need the long time until BLDCM reaches at the steady state. In order to improve the performance, this paper present the PI speed controller using the LQR based on vector control and the rotor position detection methods at the space vector PWM inverter. The proposed methods are proved by the experimental results

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선형화된 유동전동기의 특성 및 속도제어에 관한 연구 (A Study on Speed Control and Characteristics of I.M. Having Linear Transfer Function)

  • 윤병도;김대훈
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1988년도 추계학술대회 논문집 학회본부
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    • pp.337-340
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    • 1988
  • This paper describes a fast response control of an inverter-fed induction Motor. The transfer function of the induction Motor controlled by this control method ie very similar to that of a separately exited dc motor. This paper presents the linear control method for the transfer function in the control of an inverter-fed induction motor, Acceding to this control, the response speed is correctly grasped faking the leakage inductances into account and the inverter-fed induction motor is controlled with fast response.

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일반적인 형태의 역기전력을 갖는 브러쉬 업는 직류 전동기의 궤환 선형화 제어 (Feedback Linearzing Control of Brushless DC Motors)

  • 강창익;하인중;송중환
    • 대한전기학회논문지
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    • 제43권6호
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    • pp.982-990
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    • 1994
  • In this paper, we consider feedback-kinearizing control of brushless dc motors which have been increasingly used in high-performance servo applications, We completely characterize the whole class of the feedback controllers that enable the brushless dc motors to behave like linear systems but without torque ripple. The whole class of the feedback-linearizing controllers is characterized in the explicit form which contains a function to be chosen freely. The previously known controllers correspond to either the particular ones in our whole class of the feedback-Linearzing controllers or their truncated Fourier expansions. This free function can be used to achieve other control objectives as well as linear dynamic characteristics. Furthermore, our feedback-linearizing controllers can be easily determined from the measurement data of back EMF.

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선형 DC 모터의 위치제어를 위한 퍼지알고리즘의 응용 (Application of Fuzzy Algorithms for Position Control of Linear DC Motor)

  • 유종준;정태진;백동기
    • 전자통신동향분석
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    • 제10권1호통권35호
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    • pp.59-68
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    • 1995
  • 다른 산업공정에서 사용하는 제어기보다 더 빠르고 정밀한 위치 제어가 필요한 선형 DC모터 제어기에 비례 제어와 퍼지 제어의 모의 실험을 통하여 위치응답특성을 비교하고 위치 제어계에 대한 퍼지제어알고리즘의 적용 가능성을 기술하였다.

선형액추에이터의 초기구동에 미치는 탄성계수의 영향 (The Influence of elastic stiffness for a Starting State of Linear Actuator)

  • 우병철;강도현;홍도관
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2004년도 추계학술대회 논문집 전기기기 및 에너지변환시스템부문
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    • pp.77-79
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    • 2004
  • A typical conventional systems of a linear motion use rack and pinions or ball screws to convert rotary motions from DC servo motors. A linear motor has been used a several field for a MEMS technology and a aircraft carrier. We was studied a transient response of a linear actuator with a damping ratio, spring constant and a pressed power.

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공진형 선형 액추에이터의 감쇄지수 변화에 따른 과도 응답특성 (Transient Response of a linear actuator with a damping ratio)

  • 우병철;강도현
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2004년도 하계학술대회 논문집 B
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    • pp.1037-1039
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    • 2004
  • A typical conventional systems of a linear motion use rack and pinions or ball screws to convert rotary motions from DC servo motors. A linear motor has been used a several field for a MEMS technology and a aircraft carrier. We was studied a transient response of a linear actuator with a damping ratio, spring constant and a pressed power.

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An Intelligent Nano-positioning Control System Driven by an Ultrasonic Motor

  • Fan, Kuang-Chao;Lai, Zi-Fa
    • International Journal of Precision Engineering and Manufacturing
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    • 제9권3호
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    • pp.40-45
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    • 2008
  • This paper presents a linear positioning system and its control algorithm design with nano accuracy/resolution. The basic linear stage structure is driven by an ultrasonic motor and its displacement feedback is detected by a LDGI (Laser Diffraction Grating Interferometer), which can achieve nanometer resolution. Due to the friction driving property of the ultrasonic motor, the driving situation differs in various ranges along the travel. Experiments have been carried out in order to observe and realize the phenomena of the three main driving modes: AC mode (for mm motion), Gate mode (for ${\mu}m$ motion), and DC mode (for nm motion). A proposed FCMAC (Fuzzy Cerebella Model Articulation Controller) control algorithm is implemented for manipulating and predicting the velocity variation during the motion of each mode respectively. The PCbased integral positioning system is built up with a NI DAQ Device by a BCB (Borland $C^{++}$ Builder) program to accomplish the purpose of an intelligent nanopositioning control.

리니어 모터를 이용한 척킹 컴플라이언스 보상 (Chucking Compliance Compensation by Using Linear Motor)

  • 이선규;이진호
    • 대한기계학회논문집A
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    • 제26권1호
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    • pp.15-22
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    • 2002
  • This paper introduces a compensating system for machining error, which is resulted from chucking with separated jaws. In machining the chucked cylindrical workpiece, the deterioration of machining accuracy, such as out-of-roundness is inevitable due to the variation of the radial compliance of the chuck workpiece system which is caused by the position of jaws with respect to the direction of the applied force. To compensate the chucking compliance induced error, firstly roundness profile of workpiece due to chucking compliance after machining needs to be predicted. Then using this predicted profile, the compensated tool feed trajectory can be generated. And by synchronizing the cutting tool feed system with workpiece rotation, the chucking compliance induced error can be compensated. To satisfy the condition that the cutting tool feed system must provide high speed and high position accuracy, brushless linear DC motor is used. In this study, firstly through the force-deflection experiment in workpiece chucked lathe, the variation of radial compliance of chuck workpiece system is obtained. Secondly using the mathematical equation and cutting experiment result, the predicted profile of workpiece and its compensation tool trajectory are generated. Thirdly the configuration of compensation system using linear motor is introduced, and to improve the system performance, PID controller is designed. Finally the tracking performance of system is examined by experiment. Through the real cutting experiment, roundness is significantly improved.

광 저장장치용 리니어 보이스 코일 모터의 고속, 고정밀 위치제어 (High Speed and High Precision Control of Linear Voice Coil Motor for Optical Disc)

  • 김세웅;전홍걸;박노철;양현석;박영필
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 2000년도 추계학술대회논문집
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    • pp.754-758
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    • 2000
  • In recent years, the LDM(Linear DC Motor) is widely used, because it has more merits than other rotary motors. First, if system requires linear motion, LDM realizes direct linear motion as rotary motor does not. Second, system is simple and easy to control, and so on. In optical disc drive, a tracking system consists of two parts. One is fine actuating and the other is coarse actuating. For coarse actuating VCM(Voice Coil Motor) actuator is used as a basic drive mechanism. In this paper, MC(Moving Coil) type LDM is designed, manufactured and controlled. System is composed of mechanical-electromagnetic component, therefore mechanical loss and electromagnetic loss exist. The dominent mechanical loss is friction which results from sliding between guide shaft and hole. Therefore, this paper shows the friction compensation control. High speed and accurate position is not gained only PID control, therefore other control method is applied to the system.

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외란에 강인한 신경망 PID 제어방식 (Neural Network PID control method for robust disturbance)

  • 김영렬;이정훈;강성호;임성진;정성부;엄기환
    • 한국정보통신학회:학술대회논문집
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    • 한국해양정보통신학회 2003년도 추계종합학술대회
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    • pp.945-948
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    • 2003
  • 본 논문에서는 시스템에 발생하는 외란의 영향을 최소로 하기 위해 다층 신경회로망을 이용한 강인 PID 제어 방식을 제안한다. 제안한 방식은 제어 시스템에 발생하는 불특정의 외란을 필터링 하기 위해 다층 신경망을 이용한다. 외란이 포함된 실제 플랜트의 입력을 신경망의 출력으로 보상하여 플랜트를 순수하게 PID 제어기로만 제어하도록 한다. DC 모터에 대한 시뮬레이션과 MM-LDM(Moving Magnetic Linear DC Motor)의 위치제어 실험을 통해 제안한 알고리즘의 유용성을 확인하였다.

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