• 제목/요약/키워드: Command and control

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디지털 저장 미디어 명령과 제어를 위한 프로토콜 표준화 동향 분석 (Standardization of Protocols for Digital Storage Media Command and Control)

  • 김선자
    • 전자통신동향분석
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    • 제11권3호통권41호
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    • pp.1-14
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    • 1996
  • 디지털 저장 미디어 명령과 제어를 위한 프로토콜인 DSM-CC (Digital Storage Media Command & Control)에 대한 표준화가 ISO/IEC MPEG에서 한창 진행되고 있다. 본 고에서는 DSM-CC에서 정하고 있는 시스템의 기준 모델을 각 인터페이스별로 살펴보고, 현재 표준제정중인 프로토콜을 1995년 11월에 만들어진 DIS(Draft International Specification)를 중심으로 상세히 소개하고자 하였다.

단거리 지대공 유도무기에서의 시선지령식 유도법칙과 비례항법 유도법칙의 성능비교 (Performance Comparisons between Command to Line-of-Sight Guidance Law and Proportional Navigation Guidance Law in Short Range Surface-to-Air Missile)

  • 이연석;유악환;김양우
    • 제어로봇시스템학회논문지
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    • 제13권3호
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    • pp.273-278
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    • 2007
  • In this paper, a performance comparison between CLOS(Command to Line-of-Sight) guidance law and PN(Proportional Navigation) guidance law is made, based on a short range surface-to-air missile simulation program called KNUCLOS. This simulation program has a full nonlinear aerodynamic missile model, a tracker model for missile and target, and target model. According to the simulation results, the PN guidance law has a better performance than CLOS guidance law under various target speed.

감속도 신호에 의한 속도-제동력 고찰 (A Study on Velocity-Brake Force Resulted from Deceleration Signal)

  • 이우동
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2003년도 학술회의 논문집 정보 및 제어부문 B
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    • pp.616-620
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    • 2003
  • Brake action is important in train operation. In case of diesel motor cas, coachs and wagon, the brake system is only act on the stop of train, but it is emphasis on safety and convenience in urban transit system such as EMU, subwar, AGT, etc. Brake of EMU has two types. one is called service brake that is used at normal operation. The other is called emergency brake. it is used at emergency operation. Service brake bring a EMU to a halt through a blending brake that form electronic brake and frictional brake. Generally EMU compose motor car and trailer car. Blending brake bring a EMU to a halt through a blending brake that form electronic brake of motor car and frictional brake of trailer car. Blending braking technology have different characteristics each nations or manufacturing companies. but deceleration command that is parameter decide blending brake. According to deceleration command, electronic brake and frictional brake are applied differently So braking power is different. electronic brake and frictional brake must be used appropriately as deceleration command. Also braking facilities must be stopped EMU more economically and safely through revision of algorism about blending brake according to output diagram. Thus The purpose of paper is to propose blending braking control way as consideration of braking output diagram used deceleration command that influence blending brake of EMU.

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훈련시뮬레이션에서의 지휘통제 모델링 (Command and control modeling for computer assisted exercise)

  • 윤우섭;한봉규;이태억
    • 한국시뮬레이션학회논문지
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    • 제25권4호
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    • pp.117-126
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    • 2016
  • 전투지휘훈련의 목적은 컴퓨터 기반의 시뮬레이션 모델을 활용하여 지휘관과 참모들의 지휘통제 및 의사결정 능력을 향상시키는데 있다. 본 연구는 전투지휘훈련을 위한 시뮬레이션 모델에 지휘통제 모델을 포함시키는 방법을 제시한다. 지휘통제 모델을 포함시킴으로써 모델 상에서 모의되는 개별 전투개체 또는 단위부대는 게이머를 통하지 않고 전술적 통제수단으로 구성된 상급부대의 명령을 직접 입력받아 처리할 수 있다. 본 연구에서는 그러한 지휘통제 및 의사결정 과정을 이산사건시스템명세 (DEVS) 형식론을 활용하여 모델로 명세하였다. 또한 본 연구에서는 개체단위 기반의 지휘통제 및 의사결정 과정 모델과 현재 연대 및 대대급에서 활용 중인 전투21모델에서의 모의 결과를 비교하여 사례를 제시하였다. 본 연구에서는 지휘통제 및 의사결정 과정 모델이 갖는 장점 및 기대효과 등을 제시한다.

사총혈(四總穴) 관련 국내 연구 정리 분석 (Distribution of the studies on the sachonghyeol(Four Command Points) in Korea)

  • 정현종
    • Korean Journal of Acupuncture
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    • 제27권3호
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    • pp.119-127
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    • 2010
  • Objectives : The aim of the study is to analyze various studies subjected to sachonghyeol (SCH; Four command points) including ST36, BL40, LU7, LI4 in Korean literature. Methods : To analyze the results of SCH studies, The search was made through OASIS database. The search terms used were "ST36 OR BL40 OR LU7 OR LI4". Of 147 papers, 2 irrelevant papers were excluded and finally 145 papers were analyzed. Results : Thirty two studies were associated with pain control in various conditions using SCH. The pain control study of SCH covered 22 % of total studies. The next study topic was digestive function of SCH. Conclusion : To expand the clinical usage of SCH, the studies based on regulating function of SCH on ascending and descending ki, and coming in and out of ki are required to be performed in the future.

고정익 항공기의 자율 곡예비행 (Autonomous Aerobatic Flight for Fixed Wing Aircraft)

  • 박상혁
    • 한국항공우주학회지
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    • 제37권12호
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    • pp.1217-1224
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    • 2009
  • 고정익 항공기가 3차원의 복잡한 경로를 추종하기 위해 필요한 비교적 간단하며 효과적인 유도 제어 방법을 제시한다. 소개되는 방법은 비선형 경로 추종 유도 기법을 외부 루프로 사용한다. 외부 루프는 원하는 경로와 함께 항공기의 현재 위치와 속도를 바탕으로 비행 경로를 변화하기 위한 가속도 명령을 생성한다. 가속도 명령은 중력과 벡터적으로 결합되어 Specific Force Acceleration을 만든다. 이렇게 생성된 Specific Force Acceleration은 내부 루프를 위한 명령으로 쓰이는데, 이는 항공기가 가속도 자체보다는 Specific Force Acceleration을 더 직접적으로 제어할 수 있기 때문이다. 나아가 배면 비행이나 Slow Roll, Knife-Edge 등과 같은 옆미끄럼짐 기동을 하기 위해 필요한 롤 자세 제어 기법도 제시한다. 마지막으로 표준이 되는 여러 가지 곡예비행 경로들에 대한 시뮬레이션을 수행함으로써 제시된 기법의 성능을 검증한다.

수동표적추적장치의 휴먼운용자 모델링 및 입력명령형성기 설계 (Human Operator Modeling and Input Command Shaping Design for Manual Target Tracking System)

  • 이석재;유준
    • 한국군사과학기술학회지
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    • 제10권2호
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    • pp.21-30
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    • 2007
  • A practical method to design the input shaping which generates control command is proposed in this paper, We suggest an experimental technique considering human operator's target tracking error to improve aiming accuracy which significantly affects hit probability. It is known that stabilization performance is one of the most important factors for ground combat vehicle system. In particular, stabilization error of the manual target tracking system mounted on moving vehicle directly affects hit probability. To reduce this error, we applied input command shaping method using preprocessing filtering and functional curve fitting. First of all, we construct the human operator model to consider effects of human operator on our system. Input shaping curve is divided into several regions to get rid of the above problems and to improve the system performance. At example design part, we chose three steps of functional command curve and determine the parameters of the function by the proposed design method. In order to verify the proposed design method, we carried out the experiments with real plant of a fighting vehicle.

LQ-servo를 이용한 강인한 PI제어기 설계 (Robust PI controller design using LQ-servo)

  • 이동영;윤성오;서병설
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 1996년도 한국자동제어학술회의논문집(국내학술편); 포항공과대학교, 포항; 24-26 Oct. 1996
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    • pp.577-580
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    • 1996
  • LQ-servo is a stability-robustness guaranteed multivariable controller design method based on the LQR structure to improve command following performance with output feedback. In this paper, a new type of PI controller based on LQ-servo is introduced. Then, Command following performance is improved using the limiting behavior of the control gain and weighting factors on the low frequency part of design parameter Q that is the state weighting matrix in the cost function.

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LQG 설계에 의한 시선지령 유도루우프의 구성 (Command to line of sight guidance loop based on LQG design)

  • 장상근;유준
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 1992년도 한국자동제어학술회의논문집(국내학술편); KOEX, Seoul; 19-21 Oct. 1992
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    • pp.567-571
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    • 1992
  • A guidance loop of the missile system which uses a command to line of sight(CLOS) guidance law is designed based on LQG theory. In the environment of the severe tracking system noise, the system requires small aerodynamic control fin travel and small miss distance simultaneously. Results from a sample airframe shows good performance against a randomly maneuvering target.

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전기자동차용 유도전동기의 고성능 제어를 위한 퍼지제어 (Fuzzy Control for High Performance of Induction Motor Using Electric Vehicles)

  • 정동화
    • 한국안전학회지
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    • 제14권2호
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    • pp.52-61
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    • 1999
  • This paper proposes the application of fuzzy control for high performance control of induction motor using electric vehicles. A fuzzy controller converts a set of liguistic rules based on expert knowledge into a automatic control strategy. Such controllers have often been found superior to conventional controllers especially when information being processed is inexact and uncertain. A system with fast torque response is very beneficial in applications where direct self control (DSC) is highly desirable. The response of DSC is slower during startup and during change in command torque. Fuzzy control is used for implementation of DSC to improve its slow response. Simulation implementation of the fuzzy logic controller was carried out to verify the behavior of the controller. The simulation results with fuzzy control are compared with those of the conventional DSC. The starting flux and torque response and the responses to the step changes in command torque with fuzzy implementation show a considerable improvement over the conventional control. The steady state responses in both the cases are the same.

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