• 제목/요약/키워드: hydraulic servo motor control system

검색결과 35건 처리시간 0.025초

브러시리스 직류모터 방식 EMDP의 구동을 위한 제어시스템 설계

  • 이희중;박문수;민병주;최형돈
    • 항공우주기술
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    • 제4권1호
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    • pp.162-170
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    • 2005
  • KSLV-I의 킥모터의 추력벡터제어용 구동장치 시스템은 전기-유압식 서보 구동장치 형상으로 설계되었으며 가동노즐을 구동하는 구동장치, 유압동력을 생성하는 유압동력 생성장치, 유압동력을 구동장치에 전달해 주는 유압동력분배장치와 관성항법장치에서 입력되는 제어신호에 따라 구동장치를 제어하는 제어장치 등으로 구성되어있다. 그중에서 유압동력을 생성하는 장치는 전기모터를 이용하여 유압펌프를 구동하는 EMDP(Electric Motor Driven Pump) 방식을 채택하고 있다. 일반적으로 전기모터는 구동이 편리한 브러시 방식의 직류모터(BDC 모터)를 사용하는데 일정 고도이상에서는 사용이 용이하지 않다. 그래서 고고도에서 사용하기 위해 브러시없는 직류모터(BLDC 모터)를 이용하여 유압펌프를 구동하는 시스템을 개발하고 있다. 본 논문에서는 브러시없는 직류모터를 구동하기 위한 제어기 설계에 대하여 자세히 설명하고자 한다.

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소형선박용 아지무쓰 추진기의 선회장치에 관한 연구 (A Study on Azimuth Thruster for a Small Vessel)

  • 박재필;이재명;진승열;배재호;정용길
    • 동력기계공학회지
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    • 제13권5호
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    • pp.18-24
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    • 2009
  • This paper shows the result of development about the revolution system of azimuth thruster which of power is less than 250kW for small ship. Advanced Azimuth revolution system can revolve propeller and rudder from 360 degree so that this system for vessel maneuvering can be excellent of propulsion effectively. Fluid power control system for azimuth thruster is designed with PID control system by using CEMTool/SIMTool program. And the actuator used for servo valve can control rudder angle, pressure and direction. The first, We had a test for the angle control of revolution system. The result of angle control confirmed that it has the good efficiency from experiment result of time input degree $30^{\circ}$, $90^{\circ}$ and $180^{\circ}$. The second, We had to a test for the pressure characteristic of hydraulic motor. As a result, We confirmed the maximum pressure 3.5MPa and steady state 0.7MPa nom experiment result of time input degree $30^{\circ}$. In this paper, it is identified the pressure characteristic of hydraulic motor and angle control for azimuth thruster by AMESim, and it has been confirmed the usefulness of AMEsim modeling was verified by comparison between AMESim simulation results and experiments results.

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유압 서보시스템을 위한 적응제어기 설계 (The Design of Adaptive Controller for a Hydraulic Servo Motor)

  • 이상윤;신위재
    • 대한전자공학회:학술대회논문집
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    • 대한전자공학회 1998년도 하계종합학술대회논문집
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    • pp.231-234
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    • 1998
  • In this paper, we proposed a adaptive controller which need not adjustment of the scale factor. We have verified by experimental results that applying this proposed adaptive control algorithm to a hydraulic servo system is very satisfactory.

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유압모터-부하계의 3D CAD 모델링 및 적응제어 (3D CAD Modeling of a Hydraulic Motor-Load System and Adaptive Control)

  • 조승호
    • 유공압시스템학회논문집
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    • 제8권2호
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    • pp.23-28
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    • 2011
  • This paper investigates the motion control of a hydraulic motor-load system using the Simple Adaptive Control (SAC) method. The plant transfer function has been modelled mathematically. The open-loop responses have been obtained experimentally in order to identify the design parameters of transfer function. The hydraulic motor-load system has been modelled using the 3D CAD and imbedded in the hydraulic circuit simulation program to verify the overall performance. The experimental results confirm that the SAC method gives a good tracking performance compared to the PID control.

성능추정 프로그램을 이용한 대부하 선회구동/제어 시스템 단순화 연구 (A Study on the Simplified Controller for the Heavy-Load Traverse Driving System Using Performance Estimation Program)

  • 최근국;이만형
    • 제어로봇시스템학회논문지
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    • 제6권4호
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    • pp.261-267
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    • 2000
  • In this study, a heavy-load servo-control driving system, which are composed of controller, electro-hydraulic servomechanism, hydraulic motor, reduction gearbox, turret slew bearing and turret structure, are investigated to simplify the servo-control system. To estimate the effect of each component, nonlinear modeling and simulation are carried out. In the first stage, to prove the validity of the performance estimation program, simulation results are compared with experimental results. In the second stage, the effect of each component of the control system is evaluated and then a simplified control system is suggested.

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함상 안테나 구동용 안정화장치의 정밀 위치제어 (A Precision Position Control of Antenna Driving System in Naval Vessel)

  • 조택동;서승호;남기정
    • 한국정밀공학회지
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    • 제18권4호
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    • pp.190-196
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    • 2001
  • The naval vessel must moves rolling, pitching, yawing by wave when it runs in ocean. Some narrow beam antenna needed position compensation by stabilizer or gimbal for best performance. This paper presents the precision position control for heavy weight(130kg) in roll and pitch direction. Generally it's called for gimbal. This gimbal uses P-I controller, and it's driven by linear actuator and servo motor. This gimbal gets ship's gyro signal and synchro, which have the absolute angle value. Some other similar equipments are driven by huge hydraulic power, but this gimbal is driven by small servo motor. This control loop gets the following procedure repeatedly; reading ship gyro and gimbal synchro, calculating compensated error and control output, driving motor and actuator The performance of gimbal system was satisfied.

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전기.유압펌프 시스템의 설계 및 제어에 관한 연구 (A Study on Design and Control of Electro-Hydraulic Pump System)

  • 박성환;하석홍;이진걸
    • 대한기계학회논문집
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    • 제19권4호
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    • pp.1062-1070
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    • 1995
  • The study deals with controlling the velocity of hydraulic motor with PI controller through the control of displacement pump which has higher efficiency than valve-controlled system. This was done as follows. First, we modified original displacement pump and designed this electrohydraulic puma system. Second, after experimenting static and dynamic characteristics, we identified system parameter of approximated model. Lastly, to control the velocity of hydraulic motor we controlled the angle of the swash plate of displacement pump. Test carried out in the laboratory shows that transient and steady state response could be improved by PI controller reducing power loss.

Modeling and testing for hydraulic shock regarding a valve-less electro-hydraulic servo steering device for ships

  • Jian, Liao;Lin, He;Rongwu, Xu
    • International Journal of Fluid Machinery and Systems
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    • 제8권4호
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    • pp.318-326
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    • 2015
  • A valve-less electro-hydraulic servo steering device (short: VSSD) for ships was chosen as a study object, and its mathematic model of hydraulic shock was established on the basis of flow properties and force balance of each component. The influence of system structure parameters, changing rate of motor speed and external load on hydraulic shock strength was simulated by the method of numerical simulation. Experiment was designed to test the hydraulic shock mathematic model of VSSD. Experiment results verified the correctness of the model, and the model provided a correct theoretical method for the calculation and control of hydraulic shock of valve-less electro-hydraulic servo steering device.

유압구동식 선박용 축발전장치의 정속제어 (Constant Speed Control of Shaft Generating System Driven by Hydrostatic Transmission for Ship Use)

  • 정용길;이일영;양주호
    • 대한기계학회논문집
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    • 제17권8호
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    • pp.2023-2032
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    • 1993
  • This study suggests a new type shaft generating system driven by hydrostatic transmission suitable for small size vessels. Since the shaft generating system is affected ceaselessly by disturbances such as speed variation in pump driving speed and variation in external load, a robust servo control must be implemented to obtain stable electric power with constant frequency. Thus, in this study, a digital robust servo control algorithm is applied to the controller design. By the experiment and the numerical computation, the frequency variation characteristics of the generating system under various disturbances are investigated. Conclusively, it is said that the shaft generating system proposed in this study shows excellent control performances.

원격작업을 위한 5자유도 다관절 매니퓰레이터의 동특성 분석 및 위치제어에 관한 연구 (A Study on Dynamics Analysis and Position Control of 5 D.O.F. Multi-joint Manipulater for Uncontact Remote Working)

  • 김희진;장기원;김성일;한성현
    • 한국산업융합학회 논문집
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    • 제25권1호
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    • pp.87-99
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    • 2022
  • We propoes a study on the dynamic characteristics analysis and position control of 5-degree multi-joint manipulators for untact remote working at construction sites and manufacturing plants. The main frame of freedom multi-joint manipulator consists of five elements, boom cylinder, boom cylinder, arm cylinder, bucket cylinder, and rotation joint and link. In addition, the main purpose of the proposed system is to realize the work of the manufacturing process or construction site by remote control. Motion control of the entire system is a servo valve control method by hydraulic servo cylinders for one to four joints, and a servo motor control method is applied for five joints. The reliability of the proposed method was verified through performance experiments by computer simulation.