Automatic Leveling System based on AD Conversion

LI Yu-xia,LI Da-zhai 제어로봇시스템학회 2011 제어로봇시스템학회 국제학술대회 논문집 Vol.2011 No.10

Mainly study leveling system of high-Precision-Platform, analyze its required performance, design a high-Precision-Platform leveling system controlled by DSP. The Platform’s static model is build. Then based on analysis and compare of Platform leveling scheme,a ‘highest point fixed’ leveling scheme called ‘chase’ is choose for the system because it has the virtue of high precision and fast leveling. Reasons and solutions of ’vain leg’ are analyzed, and the way of fixing a pressure transducer to every leg together with an only·rise motion is selected.

변산반도 적벽강 해안의 후빙기 고해면기의 고파식와

최성길 ( Seong Gil Choi ) 한국지리학회 2015 한국지리학회지 Vol.4 No.1

The formation period of the old notches developed in Jeokbyeokgang coast of the Byeonsan peninsula of Korean western coast and the height of sea level of that period were investigated. The relation of old shore platform and present shore platform was also investigated. The old notches of Jeokbyeokgang coast has been formed in the periods of Postgalcial high sea levels which occurred at several times since the ‘climatic optimum’ period. Judging from the height between the base slope of old notch and the ramp of present shore platform, the height of sea level of the formation period of old notches was 1.5 meters higher than that of present sea level. The old notches of Jeokbyeokgang coast are regarded as the remnant features of the old shore platform formed in the periods of Postgalcial high sea levels.

저상 및 고상 철도 승강장 겸용 승강문 스텝 개념설계

박민흥(Park, Min-Heung),김철수(Kim, Chul-Soo) 한국산학기술학회 2012 한국산학기술학회논문지 Vol.13 No.9

일반 간선열차에서 주로 사용하는 저상승강장과 수도권 전동차에서 주로 사용하는 고상승강장을 동시에 안 전운행하기 위한 니즈기술로서, 저상/고상 승강장에 상관없이 승하차할 수 있는 철도차량 승강문 스텝장치가 필요하 다. 본 연구에서는 이를 대비하여 저상/고상 승강장 겸용 승강문 스탭의 기능 및 제작 요구사항을 검토하였다. 세밀히 검토한 결과, 합리적 설계안은 자체 언더프레임의 손상 및 철도승강장의 이격거리 변동성을 최소화 할 수 있는 텔레 스코픽 슬라이딩 스텝방식이라고 판단된다. 또한 다양한 요구조건을 고려하여 각 단계별 스텝 동작 과정 및 제어 흐름도를 제시하였다. In order to operate trains both mainline railroad platform and metropolitan subway line platform, it is necessary to develop the doorstep equipment of the rolling stock regardless of low(500mm, mainline) and high level platforms(1,135mm, metropolitan subway line) because of the requisite door safety system. In this study, two different types of platforms were examined. On closer examination, it seems that the conceptual design is suitable for telescopic sliding type doorstep equipment to minimize damage to the carbody underframe of railway vehicles and can also minimize the variation of the distance between the railway platform. Furthermore, the operation process and control flowchart of doorstep equipments by stages are proposed by various performance requirements.

저상 및 고상 철도 승강장 겸용 승강문 제어유닛과 열차모니터링시스템의 인터페이스 설계

김철수(Chul-Su Kim),김재문(Jae-Moon Kim) 대한전기학회 2014 전기학회논문지 Vol.63 No.2

In order to operate trains both mainline railroad platform and metropolitan subway line platform, it is necessary to develop the door step equipment of the rolling stock regardless of low(500mm, mainline) and high level platforms(1,135mm, metropolitan subway line) because of the requisite door safety system. In this study, TMS-DCU interface is studied for low and high level railway platforms. As a result, Design circuit of TMS(Train Management System)-DCU(Door Control Unit) interface is suitable for telescopic sliding type doorstep unit to minimize damage to the carbody underframe of railway vehicles.

철도차량의 저상 및 고상 승강장 겸용 승강문 스텝에 대한 내구성 평가

김철수(Kim, Chul-Soo),박민흥(Park, Min-Heung) 한국산학기술학회 2012 한국산학기술학회논문지 Vol.13 No.9

국내 여객을 취급하는 철도역사의 승강장은 간선철도노선의 저상승강장(500mm)과 광역전철구간의 고상승강 장(1135mm)으로 구분 운용되고 있다. 저상승강장 전용 중․고속 열차가 수도권 전철구간(고상승강장)과 본선구간(저상 승강장)에서 혼용 운영될 경우를 대비하고 안전운전 및 승객편의를 함께 고려하기 위해 저상 고상 승강장 겸용 승강 시스템의 개발은 필수적이다. 한편 현재 개발 중인 시스템(스텝)에 대한 국내의 내구성 및 신뢰성 시험 기준은 존재 하지 않는다. 따라서 본 연구에서는 저상/고상 승강장 겸용 텔레스코픽 슬라이드방식 승강문 스텝의 개발을 위한 연 구 일환으로서, VPD관점에서 내구성 해석을 수행하고 신뢰성 보증시험에 준한 무고장 시험시간동안 실물 리그시험 을 통하여 이의 내구성 기준 및 보증수명을 검토하였다. The platform of railroad station for domestic passenger train has been operated at two categories like the platforms if low level(500mm, mainline) and high level(1,135mm, metropolitan subway line). To operate both metropolitan subway line and mainline railroad safely, it is essential to develop the doorstep equipment of railway vehicle regardless of low and high level platforms. On the other hand, the domestic test standard at durability and reliability of doorstep equipment has not been existed until now. This study aims at the development on doorstep equipment of telescopic sliding type for low and high level platforms. Durability analysis with VPD(Virtual Product Development) techniques are performed and the durability standard & qualification life through the rig test during no failure test time is examined in accordance with reliability qualification test.

서해안 고군산 열도와 위도 주변 섬들의 구해빈 퇴적물

박희두 ( Park Hui Du ) 한국지형학회 2001 한국지형학회지 Vol.8 No.2

There are deposits of old beach on old wave-cut platforms which ar 1m higher than present high tide level and spring tide at Jangudo, Soyamido, Hoingkyungdo, Sohoingkyungdo, Chidudo, Duksando of Kokunsan Islands and DDanjunggumdo of Wido in West Sea. Their deposits are rounded gravel which have been abraded by old wave. Their matrix are yellowish red colour soil and covered with periglacial deposits which were transported on the slope. There are deposits which were mixing angular glavel and rounded gravel on the 5-10m higher altitude than present spring tides in Janggudo, Soyamido, Soyamido. Holngkyungdo, Sohoingkyungdo Island. I have been concluded that there are deposits of old beach which were deposited on old wave-cut platforms that are 1m higher than present spring tides at here and there of some island in West Sea and there are deposits of coastal terrace which are 5-10m higher than present spring tides at here and there of some islands in West Sea.

온라인 수평적 대화 형태가 대화 참여에 미치는 영향

김현주(Kim, Hyun-ju),이근명(Lee, Keun-myoung) 한국사회언어학회 2017 사회언어학 Vol.25 No.3

This study investigated how computer-mediated communication with non-hierarchical language use such as using no titles or honorific forms affects speakers participation in group discussion in a hierarchical organization setting. Assuming that the complexity of the Korean honorific system could be a factor of Korean students or employees passive participation in discussion in class or workplace, we examined whether the use of equal-level speech styles would facilitate the active discussion environment. Furthermore, an online chat platform was served as an online discussion space, which enforced equal-level talk. The results showed that the participation rates of speakers of low position, who maintained a low participation rate during offline meetings, gradually increased during online discussion, while participants of high position, who were dominant talkers during offline discussion, appeared less active in online meetings. This revealed a statistically significant interaction between communication mode(online vs. offline) and participants rank. Although the language effect was not significant statistically, we found a tendency that the participation rate was higher at the equal-level chat room than at the control room. These findings suggest that speakers act should be influenced by communication modes: speakers of low position seem to participate more freely at an online mode than at an offline mode, although the effect of the Korean honorific system on speakers participation in discussion was not conclusive.

西海岸 古群山 列島와 蝟島 周邊 섬들의 舊海濱 堆積物

박희두 西原大學校 基礎科學硏究所 2002 基礎科學硏究論叢 Vol.16 No.-

서해안 고군산열도의 장구도, 소야미도, 횡경도, 소횡경도, 치두도, 덕산도 등지와 위도 주변에 있는 딴정금도 등지에는 원력층인 구해빈퇴적층이 현재 최고해수면인 대조시의 고조위보다 1m 정도 높은 구파식대 위에 퇴적되어 있다. 구해빈퇴적층은 적황색토를 매트릭스로 하며, 기반암이 동파되어 사면이동된 주빙하퇴적물이 그 위를 덮고 있다. 또한, 장구도, 소야미도, 횡경도, 소횡경도 등의 섬에서는 최고수위면보다 5-10m 정도 높은 고도에서 각력과 원력이 혼재하여 퇴적되어 있다. 따라서 서해안 무인도서의 곳곳에서는 대조시보다 1m 정도 높은 구파식대의 구해빈퇴적물과 5-10m 정도 높은 곳의 단구퇴적물이 퇴적되어 있다.