• Title, Summary, Keyword: team system

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Fabrication of Thick Film type Cluster for Anion Generator applications (음이온 발생용 후막형 클러스터의 제조)

  • Choa, Jung-Hwan;Yeo, Dong-Hun;Shin, Hyo-Soon;Hong, Youn-Woo;Park, Zee-Hoon;Kim, Jong-Hee
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • pp.464-464
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    • 2007
  • 환경오염으로 인한 각종 질병 및 증후군 등의 발생으로 가정용 산업용에서 환경관련 기술들이 다양한 분야로 확대되고 있다. 본 연구에서는 양이온 및 음이온 양쪽이온을 최대한 발생시키며, 오존 발생량은 억제하고 소비전력을 절감하고자 Ag-Pd 전극을 적용한 세라믹스 클러스터를 개발하였다. Ag-Pd 전극과 매칭되는 세라믹스 조성을 개발한 후 적층공정 기술을 이용하여 후막형 클러스터를 제조하였다. 전극 패턴모양, 전극간 방전간격 및 전극 보호층의 두께에 따른 음이온 발생량을 측정하여 최적화를 위한 실험을 진행하였으며, 음이온 발생량 100만개이상, 오존발생량 0.6ppb인 특성을 확인하였다.

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Long-term Power System Planning by using Mixed-Integer Programming (선형계획법을 활용한 장기 전력계통 계획수립 기법개발)

  • Ryu, Heon-Su;Cho, Kang-Wook;Lee, Jo-Lyeon;Kim, Tae-Hoon;Kim, Jin-Yi;Park, Marn-Geun
    • Proceedings of the KIEE Conference
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    • pp.100-102
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    • 2007
  • 본 논문에서는 혼합정수 선형계획 법을 이용하여 장기 전력계통 계획수립시 최적의 설비를 투자할 수 있는 기법을 제안하였다. 발전설비와 송변전설비는 하나의 망으로 연결되어 상호 보완적 영향을 주기 때문에 계통계획시 두 설비를 동시에 평가하는 것이 무엇보다 중요하다. 또한 계획기간 전체에 대해 투자비를 고려하여 비용을 최소화해야 한다. 이를 위해 선형계획법을 계통계획에 도입하여 최소비용의 투자비를 가지고 공급 신뢰도 기준를 만족할 수 있는 최적 장기 전력계통 계획 수립기법을 개발하였다. 개발된 기법을 Garver 6모선 계통 및 제3차 전력수급기본계획에 대해 모의하여 결과의 타당성을 검증하였다.

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Relation between Induced Voltage of Rail and Feeding Line of Wireless Power Transfer System for Railway Application (철도용 무선전력전송시스템의 급전선로와 레일유기전압의 관계)

  • Kim, JaeHee;Park, Chan-Bae;Jung, Shin-Myung;Lee, Seung-Hwan;Lee, Byung-Song;Lee, Jun-Ho;Lee, Su-Gil
    • Journal of the Korean Society for Railway
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    • v.17 no.4
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    • pp.228-232
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    • 2014
  • The magnetic field generated by the feeding line of a wireless power transfer system induces voltage on the rail of a railway system. The induced voltage of the rail can have a bad influence on the track circuit and on safety. This paper simulated three feeding lines to study the relation between the feeding lines and the induced voltage of the rail; it also proposed magnetic field distribution of the feeding line to reduce the induced voltage.

The Overall Measurement System Development for On-line Test of Super-speed Maglev Train (초고속 자기부상철도 시운전시험을 위한 종합계측시스템 개발)

  • Han, Young-Jae;Lee, Jin-Ho;Jo, Jung-Min;Kim, Lee-Hyung;Lee, Chang-Young;Ha, Chang-Wan
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.65 no.5
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    • pp.902-910
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    • 2016
  • This paper presents the overall measurement system for on-line test of super-speed maglev train. The super-speed maglev train is composed of vehicle, propulsion, power, and so on. In order to evaluate and diagnose for sub-system, we made overall measurement system. Just like the other measurement system, it is designed to distributed type. The hardware is consist of SCXI, PXI, Terminal, UPS, and so forth. It is installed on a train, control room, power room and track to collect lots of signals. The software controls hardware system, monitors main data such as inverter current, converter voltage. Using the measurement system, we evaluated a lot of performances for vehicle, track, and so forth. Through the developed system have improved reliability and safety for super-speed maglev train.

Verb Pattern Based Korean-Chinese Machine Translation System

  • Kim, Changhyun;Kim, Young-Kil;Hong, Munpyo;Seo, Young-Ae;Yang, Sung-Il;Park, Sung-Kwon
    • Proceedings of the Korean Society for Language and Information Conference
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    • pp.157-165
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    • 2002
  • This paper describes our ongoing Korean-Chinese machine translation system, which is based on verb patterns. A verb pattern consists of a source language pattern part for analysis and a target language pattern part for generation. Knowledge description on lexical level makes it easy to achieve accurate analyses and natural, correct generation. These features are very important and effective in machine translation between languages with quite different linguistic structures including Korean and Chinese. We performed a preliminary evaluation of our current system and reported the result in the paper.

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Management of Mining-related Damages in Abandoned Underground Coal Mine Areas using GIS

  • Kim Y. S.;Kim J. P.;Kim J. A.;Kim W. K.;Yoon S. H.;Choi J. K.
    • Proceedings of the KSRS Conference
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    • pp.253-255
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    • 2004
  • The mining-related damages such as ground subsidence, acid mine drainage(AMD), and deforestation in the abandoned underground coal mine areas become an object of public concern. Therefore, the system to manage the miningrelated damages is needed for the effective drive of rehabilitation activities. The management system for Abandoned Underground Coal Mine using GIS includes the database about mining record and information associated with the mining-related damages and application programs to support mine damage prevention business. Also, this system would support decision-making policy for rehabilitation and provide basic geological data for regional construction works in abandoned underground coal mine areas.

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Fabrication of KSTAR PF CICC (KSTAR PF Coil용 CICC 제작)

  • Lim, B.;Lee, S.;Choi, J.;Jung, W.;Park, H.;Chu, Y.;Park, K.;Baek, S.;Kim, K.
    • Proceedings of the Korea Institute of Applied Superconductivity and Cryogenics Conference
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    • pp.301-303
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    • 2003
  • The KSTAR(Korea Superconducting Tokamak Advanced Research) superconducting magnet system consist of 16 TF(Toroidal Field) and 14 PF(Poloidal Field) coils. Internally-cooled cabled superconductors will be used for the magnet system. The magnet system adopt a superconducting CICC (Cable-In-Conduit Conductor) type. The KSTAR PF 6, 7 CICCs use NbTi Superconducting cable with stainless steel 316LN conduit while the other PF CICC use Incoloy 908 conduit. For the fabrication of PF CICC, superconducting cables have been fabricated and the cable has the diameter of 22.3mm. A continuous CICC jacketing system is developed for the CICC jacketing and the jacketing system uses the tube-mill process, which consists of forming, welding, sizing and squaring procedures. The cabling and the jacketing process is described. The welding condition and design specification of CICCs are also discussed. The fabrication results including the geometrical specification and the void fraction will be discussed.

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Tightly Coupled INS/GPS Navigation System using the Multi-Filter Fusion Technique

  • Cho, Seong-Yun;Kim, Byung-Doo;Cho, Young-Su;Choi, Wan-Sik
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • v.1
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    • pp.349-354
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    • 2006
  • For robust INS/GPS navigation system, an efficient multi-filter fusion technique is proposed. In the filtering for nonlinear systems, the representative filter - EKF, and the alternative filters - RHKF filter, SPKF, etc. have individual advantages and weak points. The key concept of the multi-filter fusion is the mergence of the strong points of the filters. This paper fuses the IIR type filter - EKF and the FIR type filter - RHKF filter using the adaptive strategy. The result of the fusion has several advantages over the EKF, and the RHKF filter. The advantages include the robustness to the system uncertainty, temporary unknown bias, and so on. The multi-filter fusion technique is applied to the tightly coupled INS/GPS navigation system and the performance is verified by simulation.

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An introduction to the MMI system of strip casting Process (박판주조공정의 MMI 시스템 소개)

  • Joo, Moon-G.;Lee, D.S.;Kim, Y.H.;Kang, T.
    • Proceedings of the KIEE Conference
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    • pp.2778-2780
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    • 2000
  • MMI system for strip caster 2 is described. It has been developed as a PC-based MMI system whose data is collected from the VME-based control system by ETHERNET. MMI elements that mimic the caster and its utilities are designed by using commercial program. In order to implement the UDP/IP communication in MMI, UDP/IP manager program with DDE that is a intercommunication protocol in MS-window is developed and connected with MMI mimics. Operator commands in MMI system are carried out immediately in VME system and the responses are displayed on MMI system. The developed MMI system has been proven to be convenient and stable through the operation of the past 5 years.

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SAT#1 (Preliminary Integration) Test Results of KASS System

  • Jeong, Hwanho;Jang, HyunJin;Kim, Koontack;Lee, Jaeeun;Lee, ByungSeok
    • Journal of Positioning, Navigation, and Timing
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    • v.10 no.2
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    • pp.145-151
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    • 2021
  • According to the Korea Augmentation Satellite System (KASS) system milestone, Site Acceptance Test (SAT) has three steps test until the end of the project. SAT#1 is the first time of SAT steps and verify the KASS Reference Station (KRS) and Sub System (S/S) for the monitoring and controllable. After the equipment and software were installed at the Mission Control Center (MCC) with Central Monitoring and Control Simulator (CMS) for the SAT#1, the 1:1 test was progressed when the KRS and S/S are ready to test. SAT#1 has a 10 steps test case and it was progressed each KRS sites. The test was finished throughout the real-time monitoring and the data collection including the data analysis all of the 7 KRS sites. Finally SAT#1 was completed on December 2020 with successfully.