• 제목/요약/키워드: AC 서보

검색결과 131건 처리시간 0.038초

Design of the Space Vector Modulation of Servo System using VHDL (VHDL을 이용한 서보시스템의 공간벡터 변조부 설계)

  • 황정원;박승엽
    • Proceedings of the IEEK Conference
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    • 대한전자공학회 2001년도 하계종합학술대회 논문집(5)
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    • pp.5-8
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    • 2001
  • In this paper, we have space vector PWM(Pulse Width Modulation) circuits on the FPGA(Field Programmable Gate Arry) chip designed by VHDL(Very high speed integrated circuit Hardware Description Language). This circuit parts was required at controlling the AC servo motor system and should have been designed with many discrete digital logics. In the result of this study, peripheral circuits are to be simple and the designed logic terms are robust and precise. Because of it's easy verification and implementation, we could deduced that the customize FPGA chip show better performance than that of circuit modules parts constituted of discrete IC.

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프레스 라인의 자재.자동.공급이송시스템의 개발

  • Lee, Jong-Won;Park, Jong-O;Lee, Gwang-Jin
    • Journal of the Korean Society for Precision Engineering
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    • 제5권1호
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    • pp.7-11
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    • 1988
  • 프레스 라인에서는 안정성 및 생산성향상을 위하여 자재 공급, 이송공정의 자동화가 필수적이다. 본 자동화시스템은 고압 액튜에이터와 AC 서보시스템을 이용하여 프레스 간에 자재를 이송하는 ARM과 프레스의 작업사이클과 이송 ARM을 운동하여 작업을 제어하는 PLC로 구성되었다. 이 연구서는 한국과학기술원 CAD/CAM 연구실팀에 의해 작성되었으며, 시스템의 개요, 시스템제어용 프로그램의 구조, 그리고 문제점과 전망에 대하여 논하였다.

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A Study on AC Servo Motor Drive Using the Virtual state (가상 상태를 이용한 교류 서보 전동기 구동에 관한 연구)

  • Kim, Sung-Hwon;Park, Seung-Kyu;Ahn, Ho-Kyun;Kim, Min-Chan
    • Proceedings of the KIEE Conference
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    • 대한전기학회 2002년도 하계학술대회 논문집 B
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    • pp.1158-1160
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    • 2002
  • In this paper, we presents sliding surface design techniques using the virtual state. This sliding surface has same dynamic of nominal system and permit application with other controller. If select initial value of the virtual state properly, problem of reaching phase disappears. And applied in AC servo motor's speed control to show performance of proposed sliding mode control techniques.

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A Study on the Characteristics Test of Automation System Using AC servo motor and Air cylinder for press Load/Unload (AC 서보모터와 Air 실린더를 이용한 프레스 취출용 자동화 시스템 특성시험에 관한 연구)

  • 김재열
    • Proceedings of the Korean Society of Machine Tool Engineers Conference
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    • 한국공작기계학회 1997년도 춘계학술대회 논문집
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    • pp.107-112
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    • 1997
  • In this study of made Autmation system is moving linear transfer system for mainly forming of small electronic unit and other at press line. This system for loading and unloading a workpiece has been installed in a press in order to load and unload a workpiece from a press die. Main Control method be used PLC. It took data of input from each sensor and send signal of output to actuator by sequence program also, we try to Characteristics test of this system has good condition when operating with raser measurmant.

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Mechanical Parameter Identification of Servo Systems using Robust Support Vector Regression (Support Vector Regression을 이용한 서보 시스템의 기계적 상수 추정)

  • Cho Kyung-Rae;Seok Jul-Ki;Lee Dong-Choon
    • Proceedings of the KIPE Conference
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    • 전력전자학회 2004년도 전력전자학술대회 논문집(2)
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    • pp.738-741
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    • 2004
  • The overall performance of AC servo system is greatly affected by the uncertainties of unpredictable mechanical parameter variations and external load disturbances. Therefore, to compensate this problem, it is necessary to know different parameters and load disturbances subjected to position/speed control. This paper proposes an online identification method of mechanical parameters/load disturbances for AC servo system using Support Vector Regression (SVR). The proposed methodology advocates analytic parameter regression directly from the training data, rather than adaptive controller and observer approaches commonly used in motion control applications. The experimental results demonstrate that the proposed SVR algorithm is appropriate for control of unknown servo systems even with large measurement noise.

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Control Characteristics of Speed Using Time Constant on the AC Servo Motor (교류서보모터의 시정수에 의한 속도 제어특성)

  • 김평호;박인준;정병호;오금곤;백형래
    • Proceedings of the KIPE Conference
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    • 전력전자학회 1998년도 전력전자학술대회 논문집
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    • pp.347-351
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    • 1998
  • This paper describes the controller for the improving speed control the AC servo motor. The microprocessor provides an output to the difference in command. The servo system improves the characteristics of speed control. When the motor is running at the same speed as set by the reference signal, the speed encoder also provides a signal of the same frequency. Thus, the microprocessor controlled digital techniques enable to realize the flexible performance and control which was possible with time constant. We can know that optimal speed of machining center is 75msec in 30000mm/min and actually, 75msec is using on machining center. Finally experimental results prove excellent performance of this control system. This can be reduced error with more exact measure of actual speed. The system can be adaptable to CNC machine.

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지능형 AC서보 제어드라이버의 개발

  • Kim, Dong-Wan;Hwang, Gi-Hyun;Nam, Jing-Rak;Shin, Dong-Ryul;Park, Jee-Ho
    • Proceedings of the KIEE Conference
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    • 대한전기학회 2002년도 하계학술대회 논문집 D
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    • pp.2158-2160
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    • 2002
  • In this paper, we designed the adaptive fuzzy controller(AFLC) using neural network and tabu search. We tuned the weights of neural network changing adaptively input/output gain of fuzzy logic controller and the gain of fuzzy logic controller using tabu search. To evaluate the proposed method's effectiveness, we apply the proposed AFLC to the speed control of an actual AC servomotor system. The experimental results show that AFLC has the better control performance than PI controller in terms of settling time, rising time and overshoot.

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Speed Control of AC Servo Motor Using Fuzzy-Tuning Method (퍼지 동조 기법을 이용한 교류 서보 전동기의 속도제어)

  • Yun, Kwang-Ho;Kim, Sang-Hoon;Kim, Lark-Kyo;Nam, Moon-Hyun
    • Proceedings of the KIEE Conference
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    • 대한전기학회 2000년도 하계학술대회 논문집 D
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    • pp.2470-2472
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    • 2000
  • A conventional PID controller does not provide a proper response in face of various kinds of load variation. In this paper, Fuzzy-PID Control scheme are proposed in order to improve the performance of the PID Controller. The proposed control schemes are applied to the speed controller of AC servo motor systems. The effectiveness of the proposed methods is shown by implementation and the advantage of each control scheme is discussed.

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Speed control of AC Servo Motor with Neuro-Fuzzy Controller (뉴로-퍼지 제어기를 이용한 교류 서보 전동기의 속도제어)

  • Kim, Jong-Hyun;Kim, Sang-Hoon;Ko, Bong-Un;Kim, Lark-Kyo
    • Proceedings of the KIEE Conference
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    • 대한전기학회 2001년도 하계학술대회 논문집 D
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    • pp.2018-2020
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    • 2001
  • In this study, a Neuro-Fuzzy Controller which has the characteristic of Fuzzy control and Artificial Neural Network is designed. A fuzzy rule to be applied is automatically selected by the allocated neurons. The neurons correspond to Fuzzy rules are created by an expert. To adapt the more precise modeling is implemented by error back propagation learning of adjusting the link-weight of fuzzy membership function in the Neuro-Fuzzy controller. The more classified fuzzy rule is used to include the property of dual mode method. In order to verify the effectiveness of an algorithm designed above, an operating characteristic of a AC servo motor is investigated.

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A cooperative control study of Jeju ±80kV 60MW HVDC for voltage stability enhancement (제주 ±80kV 60MW HVDC 협조 제어 방안 연구)

  • Yoon, Jong-Su;Seo, Bo-Hyeok
    • The Transactions of The Korean Institute of Electrical Engineers
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    • 제61권9호
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    • pp.1221-1225
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    • 2012
  • This paper describes CSC(Current Sourced Converters)-based HVDC operational strategy for voltage stability enhancement in the power system. In case of CSC-based HVDC system, rectifier and inverter consume reactive power up to about 60% of converter rating. Therefore, CSC-based HVDC is basically not useful system for voltage stability even if AC filters and shunt capacitors are attached. But, If the particular power system condition is fulfilled, CSC-based HVDC also can be the rapid reactive power source for voltage stability enhancement using a cooperative control with converter and AC filters/Shunt Capacitors. In this paper, the cooperative control algorithm is presented and simulated to ${\pm}80kV$ 60MW HVDC system in Jeju island.