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안정훈(Jeong-Hun Ahn) 전력전자학회 2009 전력전자학술대회 논문집 Vol.2009 No.1
임베디드 기상관측장치는 기상인자인 풍향, 풍속, 온도, 습도등을 측정하여 내부 메모리에 저장하고, 데이터베이스 시스템 서버에 측정 데이터를 전송하는 역할을 한다. 본 논문에서는 풍력발전소 입지 타당성 검토 혹은 간이 기상관측장치가 필요한 곳에 간편하게 설치할 수 있는 임베디드 타입의 기상관측장치 제작에 관하여 소개하고, 실험을 통하여 신뢰성을 확인하였다.
윤성운(Sungwoon Yoon),최철진(Chul Jin Choi),박광명(Kwangmyung Park),안정훈(Jeong Hun An),안원(Won Ahn),김기원(Gi Won Kim),박승기(Seoung Ki Park),이용만(Young Man Lee) 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.2015 No.11
The first Korean heavy ion linear accelerator, named RAON, will be operating at 2 K. The 2 K temperature can be achieved using superfluid helium (at 2.0 K, 23.4 Torr). In the SRF test facility, superfluid helium at 2 K is produced by the 2K-system which consists of a 2K-module, a warm pump system, and a control system. The 2K-module is a sort of cryomodule to keep the superfluid helium at 2 K. The warm pump system pumps down the vapor pressure of liquid helium and the control system keeps the vapor pressure at 23.4 Torr with a butterfly valve. This paper presents the operation procedure of the 2K-system and the result of cooldown test.
최현진(Hyun-Jin Choi),박철우(Chul-Woo Park),배정섭(Jung-Sub Bae),안정훈(Jeong-Hun Ahn),최성대(Seong-Dae Choi) 한국기계가공학회 2011 한국기계가공학회지 Vol.10 No.5
In this paper, the active monitoring and control system is developed. This system can monitor the status of high the speed spindle in real time during its processing, and can analyze its influence of dimensional accuracy and processing if any, and can control the machining condition to realize the machining system equipped with active monitoring and self-diagnostic features. Machining experiment was performed on 3 materials Al, Brass and S45C in order to derive the relation between active monitoring and control algorithm by the machining load. In addition, we measured surface roughness of processing specimen along with the data change of spindle rotating speed and conveying speed according to variation of machining load. Based on these experiments, we derived relations for each material that can be applied to the control algorithm to allow self control of the rotating speed and conveying speed according to the machining load.