• Title/Summary/Keyword: Field Trial

Search Result 168, Processing Time 0.128 seconds

Design Analysis and Field Try-out of Automotive Panel Dies (자동차 패널금형의 설계해석과 현장 트라이아웃)

  • 이종문;금영탁
    • Transactions of Materials Processing
    • /
    • v.8 no.2
    • /
    • pp.127-134
    • /
    • 1999
  • This study suggests the practical method which can reduce the lead time of the field trial and design of the dies. The virtual manufacturing, with which the die design is evaluated by computer analysis, reveals the impropriety of a design before die makings. Three methods for reducing the die making process occupying over 60% of the automotive development are like follows: First, the crack and wrinkle occurrence can be prevented by virtually adjusting the blank holding force and drawbead force with a computer simulation. Second, the parts which can not remove the forming defects in spite of the adjustment of forming parameters need to modify the part geometry or punch temporary shape. Third, the simulation before field trial, and field trial simulation can be effectively used in die design.

  • PDF

ISDN Field Trial 현황

  • Jo, Pyeong-Dong
    • ETRI Journal
    • /
    • v.9 no.4
    • /
    • pp.162-172
    • /
    • 1987
  • 세계 통신 선진국가에서 이루어지고 었는 ISDN의 동향과 그 field trial 현황에 대해 설명하였다.

  • PDF

A study on field trial system for automatic meter reading and load control system (수용가 자동원방검침 및 부하집중제어 시스템 현장 실증시험연구)

  • 이원빈;문홍석;김석구;양완식
    • 제어로봇시스템학회:학술대회논문집
    • /
    • /
    • pp.663-668
    • /
    • 1988
  • A study on Automatic Meter Reading and Load Control System used to Distribution Line Carrer has started since 1986, and the field trial system for AMR and LCS was installed to KEPCO on June, 1988. Now this system will be operated for testing. This paper will describe project and planning for field trial of KEPCO.

  • PDF

Wavelength Division Multiplexing-Passive Optical Network Based FTTH Field Trial Test

  • Kim, Geun-Young;Kim, Jin-Hee
    • Journal of the Optical Society of Korea
    • /
    • v.11 no.3
    • /
    • pp.101-107
    • /
    • 2007
  • In this paper, we have presented the results of Wavelength Division Multiplexing-Passive Optical Network (WDM-PON) based fiber-to-the-home (FTTH) field trial test which was held in the city of Gwangju. We have implemented an injection locked Fabry-Perot Laser Diode (FP-LD) based WDM-PON system and reliably delivered Internet Protocol TV (IP-TV), networked Personal Video Recorder (N-PVR), High-Definition Video on Demand (HD-VoD), Education on Demand (EoD) and Internet service as FTTH service through the system during the field trial test. We have also verified that the WDM-PON system worked well to provide quality of service (QoS) guaranteed 100Mbps bandwidth per subscriber. Furthermore, we have presented network designing issues in Outside Plant (OSP) and Customer Premises Network (CPN) that should be overcome to efficiently deploy FTTH service. Finally, based on the field trial test results, we proposed FTTH service deployment strategies.

THE DDS NETWORK REALIZATION (디지탈 데이터망(DDS)의 실현)

  • 장관덕;김성만
    • Proceedings of the Korean Institute of Communication Sciences Conference
    • /
    • /
    • pp.125-129
    • /
    • 1986
  • DDS network was implemented by utilizing the digital transmission in PSIN and finished field trial successfully for the first time in our country by DTC. Concept of DOS, how to implement, detail description of each section, comparison of DOS vs, analog data transmission system and result of field trial are presented.

  • PDF

1Gbps x 16 channel Wavelength Division Multiplexing-Passive Optical Network Field Trial Test (1Gbps x 16채널 WDM-PON 필드 테스트)

  • Kim, Geun-Young;Park, Hyung-Jin;Kim, Jin-Hee;Jeong, Ki-Tae
    • The Journal of Korean Institute of Communications and Information Sciences
    • /
    • v.34 no.9A
    • /
    • pp.704-711
    • /
    • 2009
  • In this paper, we report the results of the field trial test of 1GbpsX16channels Injection locking FP-LD based WDM-PON system which could guarantee 40Mbps minimum bandwidth per subscriber, We have confirmed the system reliability, also verified that the system could reliably deliver the service such as internet, VoD through the systems during the field trial test.

1Gbps x 16ch WDM-PON Field trial Based on RSOA Remodulation (RSOA 재변조 방식 기반의 1Gbpsx16 채널 WDM-PON 필드 테스트)

  • Kim, Geun-Yeong;Park, Hyeong-Jin;Park, Geun-Yeol;Park, Jae-Hyeong;Yun, Ho-Seong;Kim, Jong-An;Kim, Jin-Hui
    • Proceedings of the Optical Society of Korea Conference
    • /
    • /
    • pp.421-422
    • /
    • 2008
  • In this paper, we will present the results of 1Gbps x 16 channels RSOA remodulation based WMD-PON field trial test. We have confirmed the system reliability, also verified the system could reliably deliver the service such as internet, VoD through the system during the field trial test.

  • PDF

Design Analysis and Field Try-out of Automotive Panel Dies (자동차 패널금형의 설계해석과 현장 트라이아웃)

  • 이종문;이한수;금영탁
    • Proceedings of the Korean Society for Technology of Plasticity Conference
    • /
    • /
    • pp.25-32
    • /
    • 1998
  • This study suggested the practical method which can reduce the lead time of the field trial and design of the dies. The virtual manufacturing, with the die design is evaluated by computer analysis, reveals the impropriety of a design before making dies. Three methods for reducing the die making process occupying over 60% of the automotive development are like fellows : First, the crack virtually adjusting the blank holding force and draw bead force with a computer simulation. Second, the parts which can not remove the forming defects in spite of the adjustment of forming process parameters need to modify the part geometry or punch temporary shape. Third, the simulation before trial, field trial, and field trial simulation can be used effectively in the die design.