• Title/Summary/Keyword: Kim DooJong

Search Result 784, Processing Time 0.03 seconds

A study on the Improvement of Ignition Sequence control for Fuel Economy on vehicle (차량연비향상을 위한 점화순서 제어에 관한 연구)

  • Lee, Tae-Pyo;Kim, Jong-Boo;Yim, Kuk-Hyun;Ahn, Doo-Soo
    • Proceedings of the KIEE Conference
    • /
    • 2000.07d
    • /
    • pp.2352-2354
    • /
    • 2000
  • In this paper, to present a new ignition control system for improvement the fuel economy. An actual hardware was made to prove that new control system, which only some of cylinder using under the idle status or low speed preserving the engine rpm, is applicable to effec fuel economy.

  • PDF

Synthesis of The Optically Active Bicyclo [4.2.0. ] octanone by Stereoselective Intramolecular [2+2] Cycloaddition (입체선택적인 분자내 [2+2] 환화반응을 이용한 광학활성 Bicyclo[4.2.0.]octanone의 합성)

  • Shim, Pil-Jong;Kim, Hee-Doo
    • YAKHAK HOEJI
    • /
    • v.41 no.6
    • /
    • pp.714-717
    • /
    • 1997
  • Stereoselective synthesis of the optically active bicyclo [4.2.0] octanone 5 was accomplished using intramolecular olefin-keteniminium salt[2+2]cycloaddition of the amide 4 as a key step. This important chiral synthon was prepared starting from readily available L-glutamic acid via an efficient 8-step sequence.

  • PDF

Implementation of Active Noise Canceller via Filtered-X LMS Algorithm (Filtered-X LMS 알고리즘을 사용한 적응 잡음 제거기의 구현)

  • Ahn, Doo-Soo;Kim, Jong-Boo;Lee, Tae-Pyo;Choi, Seung-Wook
    • Proceedings of the KIEE Conference
    • /
    • 1996.07b
    • /
    • pp.1066-1068
    • /
    • 1996
  • This paper concerns about the active noise canceller via filtered-X LMS algorithm. There are various kinds of algorithms to implement a active noise canceller. Traditional LMS algorithms are not enough to implement a sharp noise cancellation characteristics. We simulates a filtered-X LMS algorithm and implements an algorithm to the TMS320C5x DSP processor and shows that result.

  • PDF

Manufacturing and Performance Test of Valve for MMC STATCOM (MMC STATCOM의 Valve 제작 및 시험)

  • Lee, Doo-Young;Park, Yong-Hee;Jeong, Jong-Kyou;Kim, June-Sung
    • Proceedings of the KIPE Conference
    • /
    • 2015.07a
    • /
    • pp.510-511
    • /
    • 2015
  • MMC(Modular Multilevel Converter)형 STATCOM 개발을 위해서는 시스템을 이루는 핵심 구성 요소인 Valve의 설계 및 신뢰성 검증이 매우 중요하다. Valve란 다수의 Sub-module을 직렬로 연결, 조합한 것이며 시스템의 용량에 따라 모듈의 직렬 개수가 정해진다. 그러므로 Valve의 최적 설계 및 제어가 시스템의 성능을 개선할 수 있는 주요 항목으로 작용한다. 본 논문에서는 이러한 Valve를 제작한 내용과 시험 설비를 통해 수행된 제품의 운전 특성에 대해서 기술하였다.

  • PDF

The Development of a Motor and Controller for Hybrid System (하이브리드 시스템용 모터 및 제어기 개발)

  • Ha, Hoi-Doo;Park, Jung-Woo;Kim, Jong-Moo
    • Proceedings of the KIEE Conference
    • /
    • 1995.07a
    • /
    • pp.231-233
    • /
    • 1995
  • The new hybrid scheme for electric bus is presented in this paper. This system is composed of a three-phase AC induction motor, one inveter and one system controller. The motor can be acted as starter, motor itself, alternator, generator and retarder. Various functions are simulated. The design stage has been finished. And the various experimental tests are undertaken now.

  • PDF

Effects of 2-Bromopropane on Mouse Embryo Development in Vitro

  • Jiang, Cheng-Zhe;Her, Jeong-Doo;Chung, Moon-Koo;Kim, Jong-Choon
    • Proceedings of the Korean Society of Toxicology Conference
    • /
    • 2003.10b
    • /
    • pp.157-157
    • /
    • 2003
  • Recently we have demonstrated that a 12-day s.c. dose of 2-Bromopropane(2-BP) to pregnant mice during pregnancy resulted in significant developmental toxicity at dose levels of above 1250 mg/kg/day. However, the cause and effect relationship between maternal and developmental toxicities could not be elucidated in the previous study.(omitted)

  • PDF