• Title/Summary/Keyword: AC 서보

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A Study on AC Servo System for FA using High-performance DSP (고성능 DSP기반의 FA 용 AC서보 시스템에 관한 연구)

  • 최치영;홍선기;김수길
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.18 no.1
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    • pp.67-72
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    • 2004
  • AC servo system has been implemented to FA system and also depends on its quality. Recently with the development of power switching device and DSP which has peripheral devices to control AC servo system, the servo technology has met a new development opportunity. A DSP based AC servo system with a 3-phase PMSM is proposed. The newly produced DSP TMX320F2812-version C which has the performance of fast speed, 150MIPS, and rich peripheral interface is used. Also space vector pulse width modulation (SVPWM) and the digital PI control are implemented to the servo system

산업용로보트와 CNC 공작기계용 디지틀 AC 서보모타제어기 개발사례

  • 김동일
    • 전기의세계
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    • v.43 no.2
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    • pp.4-10
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    • 1994
  • 산업현장에서 사용되고 있는 산업용로보트와 CNC 공작기계에 부착된 AC 서보모타는 아직까지 대부분 아나로그소자들로 구성된 아나로그제어기에 의해 구동되고 있으나, 최근들어 몇몇 선진업체가 고속의 DSP(Digital Signal Processor)를 채택하여, 전류(토오크), 속도, 위치를 디지틀제어하는 디지틀제어기를 개발하여 산업용로보트와 CNC 공작기계의 운동축을 구동하는 AC 서보모타를 제어하고 있다. 디지틀 AC 서보모타제어기는 아나로그 제어기로는 실현 할 수 없거나, 실현에 한계를 가지는 기능과 성능의 확보를 가능하게 하며, 산업용로보트와 CNC공작기계 제어기의 컴팩트(compact)화, 용이한 유지보수, 제어기가격의 절감등을 실현할 수 있게 한다. 본고에서는 산업용로보트와 CNC 공작기계의 고성능 동특성, 고정밀 제어를 가능하게 하는 AC 서보모타의 디지틀 제어기 개발시 고려해야 하는 사항과 실제 개발 및 적용사례를 소개한다.

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Design of Speed Observer and Controller for AC Servo System by Rapid Design System (고속설계시스템에 의한 AC 서보시스템의 속도관측기 및 속도제어기 설계)

  • Ji Jun-Keun;Lee Dong-Min
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.6 no.6
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    • pp.453-456
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    • 2005
  • In this paper, design of speed observer and controller for AC servo system by rapid design system(RG-01D) using DSP of Realgain company is introduced. 'AC Servo-Designer' system, including CEMTool/SIMTool S/W, RG-DSOPIO board, AC servo driver and AUTOTool program, is used in this research. Because 'AC Servo-Designer' system can use SIMTool blocks to design and implement various controller in short time, speed observer and controller for AC servo system is easily designed and implemented according to control objectives.

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An Adoptive Current Control Scheme of an AC Servo Motor for Performance Improvement of a Servo Drive (서보 드라이브 성능 향상을 위한 AC 서보 전동기의 적응형 전류 제어)

  • Kim, Kyeong-Hwa
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.20 no.6
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    • pp.96-103
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    • 2006
  • An MRAC-based adaptive current control scheme of an AC servo motor is presented for the performance improvement of a servo drive. Although the predictive current control is known to give ideal transient and steady-state responses, its steady-state response my be degraded under motor parameter variations. To overcome such a limitation, the disturbances caused by the parameter variations will be estimated by using an MRAC technique and compensated by a feedforward control. The proposed scheme does not require the measurement of the phase voltage unlike the conventional disturbance estimation scheme using observer. The asymptotic stability is proved. The proposed scheme is implemented using DSP TMS320C31 and the effectiveness is verified through the comparative simulations and experiments.

Implementation of Motor Driver for Control of AC Servo Motor of Robot (로봇의 다축 모션 제어용 AC 서보 모터 드라이버 구현)

  • Kim, Yong-Jin;Bae, Young-Chul;Kim, Kwang-Heon
    • The Journal of the Korea institute of electronic communication sciences
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    • v.7 no.3
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    • pp.553-558
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    • 2012
  • An effort for motion control of multi-axis in robot have been continued recently. In this paper, we propose implementation method for AC servo driver that can be easily motion control of multi-axis in robot. This proposed method implement EtherCAT communication technologies of bi-directional optical communication based on single optical core method that applied WDM for communication between control stage which is upper and AC servo drive stage.

A Study on the Control of AC Servo Motor for Machine Tools Cartesian Coordinate Type Using Neural Network (신경회로망을 이용한 평면좌표형 공작기계 교류서보전동기의 제어에 관한 연구)

  • 김평호;백형래;정수복
    • The Transactions of the Korean Institute of Power Electronics
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    • v.6 no.1
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    • pp.49-56
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    • 2001
  • This paper presents a new approach to the problem based on neural network methods. Instead of using general controllers, neural networks PID control are used to control AC servo motor. The most popular and widely used control method in servo system control loops is PID type. PID controller has the features of simple structure, stability and reliability. But it has limitations in complex system control and can not remain above virtues under the conditions of parameters uncertain and environment uncertainties. AC servo motor controller is designed for drive of the cartesian coordinate type for machine tools.

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A Study on Improvement of Structural Sliding Method Using AC Induction Motor Servo Control Device (AC유도전동기 서보제어장치를 이용한 구조물 슬라이딩공법)

  • Cho, Young-nam;Han, Jae-woong;Jang, Won-tae
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2018.10a
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    • pp.235-237
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    • 2018
  • In spite of the superiority of the sliding method in the building construction field, the AC induction motor servo control device is used as the power control technology in the building construction field in order to improve the problems of the hydraulic power control method, thereby contributing to the precision control and the productivity improvement. Based on Induction Motor Servo Controller, we proposed the development of a mobile sliding method using a complex combination of PC and MITY (MS) Servo.

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Precision Position Control of Industrial AC Servo Motor according to Load Variation (산업용 AC 서보 모터의 부하변동에 따른 정밀위치 제어 연구)

  • Kim, H.S.;Ko, J.S.;Choi, H.J.;Kim, S.R.
    • Proceedings of the KIPE Conference
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    • 2011.07a
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    • pp.541-542
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    • 2011
  • 최근 산업현장에서 작업의 정밀도에 대한 요구가 높아지면서 산업용 로봇의 정밀위치제어에 대한 연구가 활발히 이루어지고 있다. 특히 정밀 위치제어가 요구되는 산업용 로봇에서 외란은 로봇의 성능에 영향을 미치는 중요한 요소 중의 하나이다. 본 논문에서는 다관절 로봇에 사용되는 AC서보 모터의 고강성 정밀 위치제어를 위해 외란 변화에 대한 강인한 제어를 할 수 있는 외란 관측기와 파라메터 변동에 따른 보상 알고리즘을 제안하였다. 제안된 알고리즘은 시뮬레이션과 실험을 통해 외란 변화에 대해 정밀한 위치제어가 가능함을 보였다. 또한, 다관절 로봇의 각 축에 적용되고 있는 AC서보 모터의 PID 제어기와 제안된 알고리즘과의 비교를 통해 부하 변동에 따른 두 제어기의 차이점을 보였다.

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Position Control for AC Servo Motor Using a Sliding Mode Control (슬라이딩 모드제어에 의한 교류 서보 전동기의 위치제어에 관한 연구)

  • 홍정표;홍순일
    • Journal of the Institute of Convergence Signal Processing
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    • v.5 no.3
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    • pp.210-215
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    • 2004
  • The dynamic model of ac servo motor is influenced very much due to rotor resistance change and nonlinear characteristic. By using the sliding mode control the dynamic behavior of system can be made insensitive to plant parameter change and external disturbance. This paper describes the application of the sliding mode control for position control of ac servo motor. The control scheme is derived and designed. A design method based on external load parameters has been developed for the robust control of ac induction servo drive. The proposed control scheme are given based on the variable structure controller and slip frequency vector control. Simulated results are given to verify the proposed design method by adoption of sliding mode and show robust control for a change of shaft initial J, viscous friction B and torque disturbance.

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Robust Disturbance Suppression Control for AC Servo Motors (AC 서보모터에 대한 견실한 외란억제 제어)

  • Kim, Chang-Hwan
    • The Journal of the Korea institute of electronic communication sciences
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    • v.7 no.4
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    • pp.839-848
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    • 2012
  • In this paper, we propose a robust control scheme of AC servo motors to suppress disturbance torques effectively. The proposed controller consists of both a model based feed-forward controller and a stabilizing feedback controller. The feed-forward controller is designed such that the output of the nominal plant tracks perfectly the reference velocity command with desired dynamic characteristics. The feedback controller stabilizes the overall closed loop system. Furthermore, the feedback controller contains a free function that can be chosen arbitrarily. The free function can be designed so as to achieve both suppression of disturbances and robustness to model uncertainties. In order to illuminate the superior performance of the proposed control scheme to the conventional ones, we present some simulation results.