• Title/Summary/Keyword: automatic control system

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The train automatic speed control using a fuzzy control (퍼지제어기법에 의한 자동운전 전동차속도제어)

  • Byun, Yeun-Sub;Kim, Yong-Kyu;Shin, Duc-Ko
    • Proceedings of the KIEE Conference
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    • 2003.07d
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    • pp.2164-2166
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    • 2003
  • An automatic operation of train is executed by an automatic train operation(ATO) system. The main function of ATO system is to control train speed. So it makes the train stop at the programmed position accurately and improve riding comfort. In this paper, A fuzzy control is designed for speed control. The simulation is executed for verifying the speed control performance of the fuzzy system and comparing with that of the conventional PI.

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Design of Optimal control for Automatic Train Operation system in EMU

  • Han, Seong-Ho;Lee, Su-Gil;Kim, Soo-Gon;Lee, Woo-Dong
    • 제어로봇시스템학회:학술대회논문집
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    • 2001.10a
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    • pp.47.4-47
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    • 2001
  • The automatic-driverless operation, a very important technique for metro railways, is necessary for achieving higher safety, greater reliability, and bigger transport capacity. To achieve these things, we have to build up the system design and tasting techniques for the railway system operation. These techniques are related to the onboard train control and communication systems which include TCMS(Train Control and Monitoring System), ATO(automatic train Operation), ATC(Automatic train Control), and TWC(Train to wayside communication). These sub-systems should interface not only with each other but also between the sub-systems and the signal system on the ground. For the saving of energy, we designed coasting strategy of ATO system, In this paper, we developed ATO system and tested on the test line and ...

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A Development of the Performance Analysis Program Package of the Automatic Temperature Control System for Heating (난방용 자동온도조절기 성능분석용 프로그램 및 패키지 개발)

  • Kim, Yong-Ki;Woo, Nam-Sub;Lee, Tae-Won;Ahn, Byung-Cheon
    • Proceedings of the SAREK Conference
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    • 2009.06a
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    • pp.1209-1214
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    • 2009
  • Various automatic temperature control systems have been used widely in Korea for the conservation of heating energy and the enhancement of thermal comfort in residential buildings. But the heating control performance for automatic temperature control systems extensively vary with the design and operational conditions of the heating system, the climate condition and others. It was introduced in this study a numerical calculation program package to analyze heating control characteristics of the automatic temperature control system. This package is able to analyze the room air temperature, return water temperature, supplied heating flux and flow rate, and so on. One the other hand, the simulation results were verified by comparing with the field test results.

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Automatic Landing in Adaptive Gain Scheduled PID Control Law

  • Ha, Cheol-Keun;Ahn, Sang-Won
    • 제어로봇시스템학회:학술대회논문집
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    • 2003.10a
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    • pp.2345-2348
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    • 2003
  • This paper deals with a problem of automatic landing guidance and control system design. The auto-landing control system for the longitudinal motion is designed in the classical PID controller. The controller gains are properly adapted to variation of the performance using fuzzy logic as a gain scheduler for the PID gains. This control logic is applied to the problem of the automatic landing control system design. From the numerical simulation using the 6DOF nonlinear model of the associated airplane, it is shown that the auto-landing maneuver is successfully achieved from the start of the flight conditions: 1500 ft altitude, 250 ft/sec airspeed and zero flight path angle.

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Web Based Smart Home Automation Control System Design

  • Hwang, Eui-Chul
    • International Journal of Contents
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    • v.11 no.4
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    • pp.70-76
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    • 2015
  • The development of technology provides and increases security as well as convenience for humans. The development of new technology directly affects the standard of life thanks to smart home automatic control systems. This paper describes a door control, automatic curtain, home security (CCTV, fire, gas, safe, etc.), home control (energy, light, ventilation, etc.) and web-based smart home automatic controller. It also describes the use of ARM (Advanced RISC Machines) for automatic control of home equipment, a Multi-Axes Servo Controller using FPGA (Field Programmable Gate Array) and PLC (programmable logic controller). Additionally, it describes the development of a HTML editor using web auto control software. The tab loading time (7 seconds) is faster when using ARM-based web browser software instead of Chrome and Firefox is used because the browser has a small memory footprint (300M). This system is realized by web auto controller language which controls and uses PLCs that are easier than existing devices. This smart home automatic control technology can control smart home equipment anywhere and anytime and provides a remote interface through mobile equipment.

A study on the autonomous control system for an unmanned surface vessel?

  • Park, Soo-Hong;Kim, Jong-Kwon;Jang, Cheol-Soon
    • 제어로봇시스템학회:학술대회논문집
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    • 2004.08a
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    • pp.417-420
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    • 2004
  • Recently, the applications of unmanned system are steadily increasing. Unmanned automatic system is suitable for routine mission such as reconnaissance, environment monitoring, resource conservation and investigation. Especially, for the ocean environment monitoring mission, many ocean engineers had scoped with the routine and even risky works. The automatic system can replace the periodic and routine missions: water sampling, temperature and salinity measuring, etc. In this paper, an unmanned surface vessel was designed for routine and periodic ocean environmental missions. An autonomous control system was designed and tested for the unmanned vessel. A GPS and gyro compass was used for navigation. A linear autopilot model for course control can be derived from the maneuvering model. Nomoto's 2nd-order response equation was derived. The design methodologies and performance of the surface vessel were illustrated and verified with this linearized equation of motion. A linear controller was designed and automatic route tracking performance was verified for yaw subsystem.

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Supervisory Control for Multi-Processor-Based Automatic Assembly System (다중프로세서 방식의 자동조립시스템을 위한 관리제어)

  • ;;;Zeungnam Bien
    • The Transactions of the Korean Institute of Electrical Engineers
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    • v.39 no.8
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    • pp.888-897
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    • 1990
  • In this paper, a multi-processor-based supervisory control for automatic assembly system is presented. The proposed supervisory control is organized in terms of C-language and with structured and easily expandable characteristics. Also the controller is designed to possess diagnostic capability including self-diagnosis of processor module. The developed supervisory control has been shown to be very useful via a high speed automatic assembly system with vision capability.

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Automatic Optimum Control of the Traffic Signal Lights (교통신호의 자동최적제어에 관한 연구)

  • 양흥석;김호윤
    • 전기의세계
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    • v.20 no.4
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    • pp.12-16
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    • 1971
  • The electrical detector and computer systems for traffic flow and speed measurement are demonstrated in this paper. For the best traffic control optimization, linear and non-linear equations in the transition state are dealing with the perturbation of the linear car-following. In the conclusions, we construct a realizable system for the central automatic traffic control with a computer. Furthermore, fixed periodic switching system by manual with the automatic traffic control system is recommended for emergency perturbation.

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DEVELOPMENT OF A CONTROL SYSTEM FOR AN AUTOMATIC ROAD SIGN REMOVING EQUIPMENT USING HIGH PRESSURE WATER-JET (초고압수를 이용한 노면표시 자동제거 장비개발을 위한 제어시스템 및 노면최적조건에 대한 연구)

  • Kwon Soon-Wook;Kim Kyoon-Tai;Han Jae-Goo
    • Korean Journal of Construction Engineering and Management
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    • v.5 no.4 s.20
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    • pp.139-146
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    • 2004
  • Resent removal work for road signs has been labor intensive and required times since it has been done manually using shaving type equipment. While traditional process is conducting, there are traffic jams caused by the passing control, and happened unexpected accidents to workers working at dangerous road circumstance. Besides, in current shaving method, there are high potentialities on the air pollution as well as the explosive accident occurred by using a propane gas. So, as an alternative, we have studied to develop the automatic erasing equipment made up with a high pressure water-jet system and automatic control system, mobile system; Wate-rjet system consists of an intensifier and nozzles to give a high pressure and spray on the sign, and automatic control system is composed of one axis robot using a hydraulic servo actuator controlled by a lever, And as a mobile system, a truck plays an important role for the transport of equipment and the forward movement in a removal process. In this paper, we have analyzed the characteristics of road signs and have investigated current erasing methods in the field. And we have organized and designed automatic erasing equipment, and we have made a basic experiment to find out the optimal spray condition as like the spray distance, spray angle and injection pressure.

Development of automatic flow control system for the practice of Ziegler-Nichols and Cohen-Coon control theory (Ziegler-Nichols와 Cohen-Coon 제어 이론의 실습을 위한 자동 유량제어 시스템의 구축)

  • Kang, Tae-Won;Lee, Ho-Gyun
    • Journal of Engineering Education Research
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    • v.20 no.4
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    • pp.61-66
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    • 2017
  • Automatic flow control system composed by hardware and software was designed and fabricated to be used as teaching tool of feedback control theory in university experimental class. This system includes hardwares like data acquisition board, flow measuring device, transmitters, and the pneumatic valve, and software like LabView program for the monitoring and control of flow rates. The system was designed as the student can see the control effect of not only set point but also disturbance changes. Also the LabView program was composed for the calculation of controller parameters of both Ziegler-Nichols and Cohen-Coon tuning. The students can apply both tuning constants and compare the control performances. This system will provide the easy way for the students to understand the function and specification of control hardwares, and to raise the programing ability of control software.