• Title/Summary/Keyword: Supervisory

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Formal Model 작성을 위한 Event Graph 모델링 연구

  • 박정현;최병규
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 1995.10a
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    • pp.864-867
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    • 1995
  • Presented in the paper is a structured approach to modeling automated manufacturing system (AMS) in the form of an event graph. The proposed two-phase procedure for formal modeling is 1) reference modeling by schematic supervisory control modeling and 2) event graph transformation from supervisory control model. Also described is a formal model for a small-sized FMS in the form of an event graph.

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On Improving Wireless TCP Performance Using Supervisory Control (관리 제어를 이용한 무선 TCP 성능 향상에 관한 방법)

  • Byun, Hee-Jung
    • Journal of Institute of Control, Robotics and Systems
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    • v.16 no.10
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    • pp.1013-1017
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    • 2010
  • This paper proposes a systematic approach to the rate-based feedback control based on the supervisory control framework for discrete event systems. We design the supervisor to achieve the desired behavior for TCP wireless networks. From the analysis and simulation results, it is shown that the controlled networks guarantee the fair sharing of the available bandwidth and avoid the packet loss caused by the buffer overflow of TCP wireless networks.

Implementation of Human Body Detection Module for Unmanned Remote Supervisory System (무인 원격감시 시스템용 인체감지 모듈의 구현)

  • 박정훈;홍성훈;강문성
    • 제어로봇시스템학회:학술대회논문집
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    • 2000.10a
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    • pp.184-184
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    • 2000
  • The new-type measuring modules for unmanned remote supervisory system using mobile communication network have been designed in this study. Measuring modules consist of temperature measuring module, humidity measuring module and human body sensing module. And we will design a main part to collect and process informations of each modules, evaluate reliability of combined total system.

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A Study on the Stability of Supervisory Control for Nonlinear System with Saturating Input (포화입력을 가진 비선형 시스템에 대한 슈퍼바이저 제어의 안정성 연구)

  • 차경래
    • Journal of the Korean Society of Manufacturing Technology Engineers
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    • v.8 no.4
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    • pp.112-122
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    • 1999
  • In realistic control systems the nonlinear saturation attributes of the control actuator due to physical limitations should be taken into account This nonlinear saturation of actuators may cause not only deterioration of the control performance but also a large overshoot during start-up and shut-down. As the overshoot increases the system may become oscillatory unstable. in this paper the supervisor implementation which guarantees good performance for saturation operation and prevents reset wind up is presented, Moreover the sufficient conditions of the stability for saturated system using supervisory control with a dynamic controller are provided in the continuous-time and in the discrete-time domain Numerical example is illustrated to depict the efficiency of supervisory control for a typical satuaurated production-distribution system controlled by a discrete-time dynamic controller and to validate basic results by simulation.

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Project Implementation an Management for the State of the Art Computerized Supervisory Systems (최신의 컴퓨터기술을 적용한 원방감시시스템의 사업수행과 관리)

  • 윤갑구
    • Journal of the Korean Professional Engineers Association
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    • v.26 no.3
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    • pp.69-79
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    • 1993
  • This paper explains about general considerations and project management for a State of the Art utility supervisory systems. [1] The implementation and management of a supervisory system design project requires both a dedication of resources and application of good communications in order to be suc-cessful. [2] Success is on time delivery of a system to a satisfied customer at the proposal cost, [3] The recent experience of a company plus the collected comments from a number of ex-perienced control center project management provide a guideline for the company who is considering such a project. The Comments reflect typical situations or decision points faced by the project Manage.[2] This paper also attempts to help engineers in the task of specifying buying, and instal-ling a supervisory system[1]

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Implementation of Unmanned Remote supervisory System having Multipurpose Measuring Modules

  • Park, Jung-Hoon;Hong, Sung-Hoon;Kang, Moon-Sung
    • 제어로봇시스템학회:학술대회논문집
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    • 2001.10a
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    • pp.132.1-132
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    • 2001
  • In this paper, we have studied for development of unmanned remote supervisory system using mobile communication network, not wire network, not to be affected by space or distance. The unmanned remote supervisory system consists of data processing unit main part and measuring systems (modules part)-temperature measuring module, humidity measuring module and human body sensing module. The data processing unit to collect and process informations of each measuring module has the functions of data communication between a mobile cellular telephone and measuring systems. Each measuring module has supervisory and warning functions for a target of supervision. And then we have designed each system and evaluated accuracy and reliability of the combined total system.

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Stability Analysis of Competitive Markets by Supervisory Control Theory (관리제어이론을 이용한 경쟁시장의 안정성 해석)

  • Park, Seong-Jin
    • Journal of Institute of Control, Robotics and Systems
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    • v.16 no.11
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    • pp.1025-1028
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    • 2010
  • This paper presents a new approach to analyze the stability of dynamic competitive markets within the framework of supervisory control of discrete event systems. A competitive market is representative of free market economy where it is well known that an invisible hand (also referred to as Walrasian auctioneer) always achieves an equilibrium of demand and supply. Upon the framework of supervisory control theory, this paper shows that Walrasian auctioneer is a stabilizing supervisor for a convergent competitive market, however a non-convergent competitive market (e.g. a free market under economic bubble and depression) controlled by Walrasian auctioneer may not be stable.

Design of Petri net based AIM Supervisory Control System Platform (페트리네트 기반 AIM 관리시스템의 플랫폼의 설계)

  • Kong S.H.;Suh I.H.;Cho Y.J.;Kang H.S.;Lee G.B.
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2006.05a
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    • pp.629-630
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    • 2006
  • This paper present a design experience of supervisory control system platform for agile and intelligent manufacturing(AIM). Embodied integrated environment that can do in place that do work direction, analysis command file generation, achievement using Petrinet-type Graphical Language(PGL) in proposed Supervisory Control System. Also, embodying whole system software in Modular done form, did to have extensity to fit in developer's requirement.

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Supervisory Control of Dynamic Oligopolistic Markets: How can Firms Reach Profit-Maximization? (동적 과점시장의 관리제어: 기업들은 어떻게 이윤극대화에 이를 수 있는가?)

  • Park, Seong-Jin
    • Journal of Institute of Control, Robotics and Systems
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    • v.17 no.4
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    • pp.304-312
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    • 2011
  • In an oligopolistic market, only a few firms account for most or all of total production, e.g., automobile, steel, and computer industries. For a dynamic oligopolistic market with two firms competing in quantities, we show that supervisory control theory of discrete event systems provides a novel approach to solve the dynamic oligopoly problem with the aim of maximizing the profits of both firms. Specifically, we show that the controllability, observability, and nonblocking property (which are the core concepts in supervisory control theory) are the necessary and sufficient conditions for two oligopolistic firms in disequilibrium to eventually reach equilibrium states of maximizing the profits of both firms.

A Study on the Supervisory Control System Using Computer Graphic Simulation (컴퓨터 그래픽 시뮬레이션을 이용한 감독자(監督者) 제어(制御)에 관한 연구(硏究))

  • Lee, Sun-Yo;Sim, Seon-Mo
    • Journal of the Ergonomics Society of Korea
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    • v.4 no.2
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    • pp.11-15
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    • 1985
  • Nowadays, there are many situations which the conventional control system can't be applied any more (e.g. nuclear waste disposal sites, radioactive laboratories, the deep ocean and the vacuum of the outer space). New control system must be considered such as supervisory control system in those environment. Using computer graphic robot simulation, supervisory control which can cope with this situation is compared to manual control. As a performance measure of these comparisons, task time and task error are used. And task difficulties and time delay are considered as a variation factor. According to the result of this study, supervisory control is superior to manual control generally. Especially in the situation including task difficulties and time delay, the superiority is much greater.

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