• 한국진공학회:학술대회논문집
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• 한국진공학회 2008년도 제34회 동계학술대회 초록집
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• pp.352-352
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• 2008

• 과학과기술
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• 제30권7호통권338호
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• pp.16-19
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• 1997

광활한 우주 속에서 가장 아름답고 생명체가 살아 숨쉬는 단 하나의 행성인 지구가 중병에 걸려 기력을 잃어가고 있다. 지구를 신음케 하는 질병의 주범은 환경오염과 인구폭발, 자원고갈로 이러한 현상은 모두 사람이 만든 재해이다. 말세론까지 들먹이는 이 지구를 살리기 위한 처방은 어디서 찾아야 하는가.

• 기계저널
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• 제29권6호
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• pp.601-607
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• 1989

수력. 화력. 원자력 발전시설을 앞으로 매년 1조 6,000억 이상 투자하고 설치하여야만 국민생활의 향상과 산업발전을 원활히 지원할 수가 있다. 국가의 정책과 함께 발전에 관한 계획도 화력(기력) (연료별 oil LNG 등), 원자력 등의 장기계획 아래 발전설비 중 터빈에 관한 체계적인 연구가 수 행되었으면 한다.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2010년도 추계학술대회 논문집
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• pp.407-408
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• 2010

• 한국정밀공학회지
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• 제23권8호
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• pp.27-32
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• 2006

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2011년도 춘계학술대회 논문집
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• pp.665-666
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• 2011

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2011년도 춘계학술대회 논문집
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• pp.457-458
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• 2011

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2011년도 춘계학술대회 논문집
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• pp.1239-1240
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• 2011

• 한국소음진동공학회논문집
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• 제19권8호
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• pp.788-794
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• 2009

Various types of latch designs for hard disk drives using load/unload mechanism have been introduced to protect undesired release motions of a voice coil motor(VCM) actuator from sudden disturbances. Recently, various inertia-type latches have been widely used because locking performance is better than that of other types of latch. However there has been a limit in the inertia type in order to guarantee perfect latch and unlatch operations because of changes in latch/unlatch conditions due to mechanical tolerance and temperature-dependent friction. In this paper, a reliable and robust magnetic latch mechanism is proposed through only simple modifications of coil and yoke shapes in order to overcome the mechanical limit of current inertia-type latches. This new magnetic latch does not have only a simple structure but it also ensures reliable operations and anti-shock performance. The operating mechanism of the proposed latch is theoretically analyzed and optimally designed using an electromagnetic simulation.

• 한국정밀공학회지
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• 제23권3호
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• pp.76-85
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• 2006

In the manufacture of liquid crystal display devices, there is a strong demand for contactless glass panel handling devices that can manipulate a glass panel without contaminating or damaging it. To fulfill this requirement, an electrostatic transportation device for glass panels is proposed. This device can directly drive a glass panel and simultaneously provide contactless suspension by electrostatic forces. To accomplish these two functions, a feedback control strategy and the operational principle of an electrostatic induction motor are utilized. The stator possesses electrodes which exert electrostatic farces on the glass panel and are divided into a part responsible for suspension and one for transportation. To accomplish dynamic stability and a relatively fast suspension initiation time, the structure of the electrode for suspension possesses many boundaries over which potential differences are formed. In this paper, an electrode pattern suitable for the suspension of glass panels is described, followed by the structure of the transportation device and its operational principle. Experimental results show that the glass panel has been transported with a speed of approximately 25.6 mm/s while being suspended stably at a gap length of 0.3 mm.