• 대한전기학회:학술대회논문집
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• 대한전기학회 2001년도 추계학술대회 논문집 전기기기 및 에너지변환시스템부문
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• pp.42-44
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• 2001

This paper proposes impact vibration theory of magnetic contactor moving mechanism and correlation test the bouncing time with the spring load. Mechanical and electrical lifetime is under the influence of impact vibration of magnetic contactor moving mechanism. In shortage of technique, we have experienced many difficulties in magnetic contactor development. By this research, we analyzed total moving mechanism and applied results to optimum 4p magnetic contactor development.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2003년도 추계학술대회 논문집 전기기기 및 에너지변환시스템부문
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• pp.134-136
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• 2003

This paper proposes moving mechanism theory & magnetic core analysis regarding mini magnetic contactor and differential mechanism & bimetal analysis regarding mini thermal overload relay. In shortage of technique, we have experienced many difficulties in magnetic switch development. By this research, we developed core parts about mini magnetic switch and applied the results to optimum mini magnetic switch development

• 대한전기학회:학술대회논문집
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• 대한전기학회 2007년도 제38회 하계학술대회
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• pp.919-920
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• 2007

Currently national High Voltage Gas Insulated Switchgear (GIS) operating mechanism is made up of spring operating mechanism or hydraulic operating mechanism. On the contrary, advanced technology trend in foreign countries replace current mechanical mechanism with electrical motor-drive mechanism that leads to participate GIS bid and increase sales with the point of simplification of driving system and IT application. Therefor it is essential to develop high voltage GIS using the motor-drive system to develop national heavy electric machine industries and catch up the technology to the advanced level. This paper therefore presents design and analysis of permanent synchronous motor for high voltage GIS, verifies the performance by the experimental test.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2008년도 제39회 하계학술대회
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• pp.980-981
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• 2008

Mechanical spring and hydraulic pressure operated mechanisms are applied in most of today's High Voltage Gas Insulated Switchgear(GIS)s. This paper proposes a new type of operation mechanism for GIS circuit breakers rated at 245kV and 40kA. The Motor-Direct-Drive-Mechanism (MDDM) has many advantages compared to conventional operating mechanisms. It has a very simple structure with only one moving part, low mechanical stress and audible noise. It also allows monitoring, operation speed control and self-diagnosis functions.

• 전력전자학회:학술대회논문집
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• 전력전자학회 2007년도 하계학술대회 논문집
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• pp.114-116
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• 2007

Mechanical spring and hydraulic pressure operated mechanisms are applied in most of today's High Voltage Gas Insulated Switchgear(GIS)s. This paper proposes a new type of operation mechanism for GIS circuit breakers rated at 245kV and 40kA. The Motor-Direct-Drive-Mechanism (MDDM) has many advantages compared to conventional operating mechanisms. It has a very simple structure with only one moving part, low mechanical stress and audible noise. It also allows monitoring, operation speed control and self-diagnosis functions.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2011년도 춘계학술대회
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• pp.831-834
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• 2011

본 연구에서는 컨테이너화물 안전수송에 사용되는 컨테이너 보안장치(CSD: Container Security Device)의 주요 기능인 컨테이너 도어 개폐감지를 위해 "Reed Sensor를 이용한 효율적인 도어 개폐 메커니즘"을 소개하고 이를 구현하여 실제 성능을 검증하고자 한다. "Reed Sensor를 이용한 효율적인 컨테이너 도어 개폐 감지 메커니즘"은 컨테이너 제조사 마다 각기 다른 컨테이너 문에 부착되어 미국 국토안보부에서 제시한 컨테이너 보안장치의 컨테이너 도어 열림 판단 기준을 만족 시킬 수 있도록 설계 및 구현되었다. 뿐만 아니라 제한적으로 컨테이너 도어의 열림 간격까지 확인 할 수도 있다. 본 연구에서 소개한 컨테이너 도어 개폐감지 메커니즘을 ICC사업단에서 개발한 컨테이너 보안장치인 ConTracer에 구현하여 제조사가 각각 다른 30개의 컨테이너에 장착테스트를 통해서 미국 국토안보부에서 제시한 컨테이너 문의 열림 판단 기준을 만족하는지 검증하였다.

• 기술경영경제학회:학술대회논문집
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• 기술경영경제학회 2003년도 제23회 하계학술발표회 논문집
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• pp.108-115
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• 2003

Government R&D Project Management in Korea has had considerable difficulties because of the lack of project monitoring systems and insufficient communication. The National Program for Tera-level Nanodevices (TND Program) is a ten-year R&D program for commercialization in the area of nano technology. Collaboration and communication among the various participants such as business companies, universities, and government R&D institutes are key success factors in this R&D program. TND Program office has developed a Web-based project management system. This system consists of mostly four sub-management functions: (1) Milestones management of all R&D projects; (2) DR (Design Review) management as the mechanism for checking the performance against milestones; (3) Project activity management using the WBS (Work Breakdown Structure); (4) Budget management. Additionally, it also has many R&D supporting functions such as technology information bulletin board, community management, and visual summary of project progress and performance. This system is effective for monitoring research project as well as measuring project performance of the overall research program. This Web-based system has become the useful tool of R&D moving target mechanism and effective communication and collaboration tool. System features and adoption process of the system are also suggested.

• 대한기계학회논문집
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• 제9권4호
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• pp.528-538
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• 1985

본 논문에서는 crank-rocker 운동에 의해 함수 y=sinx를 만족시키는 3차원 R-S-S-R 함수발생기구를 FDP(Fletcher-Davidon-Powell) 최적화 기법을 응용, 운동학적 으로 무오차점을 고려, 설계하려고 한다. 한편 상기와 같이 최적 설계된 기구의 실 제 운동과 요구된 운동과의 오차분석 및 운동 가능성 여부(mobility check)를 검토하 였으며 FDP 최적화 기법에 필요한 벌칙함수(penalty function)로써 Fiacco-McCormic- krhk Powell의 벌칙함수를 사용하여 그 결과를 비교하였다.

• 기술혁신학회지
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• 제3권2호
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• pp.94-110
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• 2000

This article prospects the patterns of technological innovation in the steel industry and suggests the directions of technological innovation in Korean steel industry. Technological innovation patterns can be analysed through technological trends, innovation-inducing mechanism, and innovators' relationships. In the technological trends, direct coupling of manufacturing processes, lasting growth of mini-mill, and the importance of technological integration are prospected. In the innovation-inducing mechanism, while production system will be specialized, the development of new steel materials and environment-friendly technological innovation will be accelerated. In the innovators' relationships, steel industry faces more complex competition and new forms of inter-firm cooperation including M&A, joint venture, and joint R&D. In order to cope with such changes in the technological innovation patterns, Korean steel industry need to establish core competence based on technological innovation through a great leap in R&D investment, the production of high value-added products, the development of new generation steel technologies, strategic joint R&D, comprehensive technological cooperation, and government's active support.

• 디지털융복합연구
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• 제11권11호
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• pp.233-242
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• 2013

기술혁신을 하기 위한 R&D에는 많은 시간과 비용이 투입된다. 따라서 기술혁신을 위해 투자된 연구개발 비용에 대한 전유성을 확보하기 위한 전략이 중요하다. 전유성이란 기술혁신에 대한 수익을 배타적으로 보호 확보할 수 있는 정도를 뜻하며 특허(patent), 영업비밀(secrecy), 리드타임(lead time advantage), 보완적 판매 및 서비스(complementary sales & service), 보완적 제조(complementary manufacturing) 등 5가지의 전유 메커니즘(appropriability mechanism)이 있다. 본 연구에서는 국내 소프트웨어 산업의 전문가들을 대상으로 어떠한 전유성 확보전략을 취하고 있는지에 대하여 설문조사를 하였고, 쌍대비교 기법을 통해 각 요인들의 우선순위를 도출하여 선행연구와 비교하였다. 분석 결과, 국내 IT 제조기업에서는 영업비밀, 특허, 리드타임, 보완적 판매 및 서비스, 보완적 제조의 순으로 전유 메커니즘을 선호하고 있음을 확인하였다.