• Title/Summary/Keyword: Inter-cardinal run

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Study on Improvement of Deperming Performance Applied Dead Time (Dead Time 적용에 따른 탈자 성능향상에 관한 연구)

  • Kim, Jong-Wang;Kim, Ji-Ho;Chung, Hyun-Ju;Lee, Hyang-Beom
    • Proceedings of the KIEE Conference
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    • 2011.07a
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    • pp.1065-1066
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    • 2011
  • 본 논문에서는 함정의 피탐지 성능 개선을 위한 기초 연구로 dead time 적용시 탈자 프로토콜 변화에 따른 탈자 성능 분석에 관한 연구를 하였다. 함정의 재질은 SM45C로 원통의 형태이다. 자기장 측정에 사용한 자기센서는 영국 Bartington Instruments사의 MAG-03MCB70(Three-Axis Fluxgate Magnetometer)을 사용하였으며, inter-cardinal run 방법을 이용하여 유도자기장과 영구자기장을 분리하였다. Anhyteretic deperm 프로토콜을 적용하여 탈자를 진행하였고 전류의 지속시간이 증가하는 경우에 비하여 dead time을 적용하였을 경우 탈자 성능이 향상된 결과를 얻을 수 있었다.

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Analysis of Deperming Performance According to Deperming Protocol Transform of Vessel Model (함정모델의 탈자프로토콜 변화에 따른 탈자성능 분석)

  • Kim, Jong-Wang;Kim, Ji-Ho;Park, Hyun-Soo;Jung, Hyun-Ju;Lee, Hyang-Beom
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.60 no.9
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    • pp.1693-1699
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    • 2011
  • In this paper, for magnetic silence technology of naval vessel, is to make lab deperm system and to evaluate the deperm capacity of naval vessel regarding deperm protocol. Initial permanent magnetic field of naval vessel is magnetized before deperm, having the magnetic field of the same size, to evaluate the deperm capacity regarding a variety of deperm protocol for experimental reliability growth. Current dead time effect of deperm protocol is measured at the different initial current, which are 8A, 6A and 4A respectively. Furthermore, the experiment under the same condition except changing duty cycle into 50% is carried out. As a result, it is possible to compare the six different experiment outcomes. The result shows that the experiment with dead time improve the deperm capacity more than 48.51 percent comparing to the case without dead time.