• 대한조선학회논문집
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• 제31권4호
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• pp.23-31
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• 1994

구획배치 모델은 구획의 경계면으로 사용되는 구조 부재요소들에 의해 정의되는 공간들의 특성 및 형상정보에 의해 표현된다. 이러한 구획배치 모델링 작업을 효율적으로 수행하기 위해 Chopping 및 Merging 모델링 기법을 이용한 그래픽 지원 대화식 구획배치 모델러를 개발하였다. 일반적으로 구획배치 모델링을 위해 사용되는 프로그램 내부 기법이 아무리 우수해도, 프로그램을 이용하는 사용자 입장에서 입력방식이 불편할 경우에는 프로그램 활용가치는 반감된다. 따라서 본 논문에서는 그래픽 사용자 인터페이스 기법을 이용하여 사용자가 편리하게 구획배치 모델링 작업을 수행할 수 있는 방법을 개발하고 이를 구현하였다. 본 연구를 통해 개발된 구획배치 모델링 방법은 솔리드 모델링 개념의 모델링 기법과 모델링을 위해 사용자가 입력해야 하는 정보를 그래픽 지원 인터페이스를 이용하여 신속하고 편리하게 처리할 수 있도록 함으로써, 효율적인 구획배치 모델링을 수행할 수 있도록 하였다. 본 연구를 통해 개발된 구획배치 모델러를 실선에 적용해 본 결과 보다 효율적이고 편리하게 구획배치 모델링을 수행할 수 있음을 확인하였으며, 실선에 적용한 예를 보였다.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2005년도 ICCAS
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• pp.1662-1667
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• 2005

In this paper, analysis, design, control and prototype construction of a wearable wire-driven haptic interface called HapticPen is discussed. This device can be considered as a wire driven parallel mechanism which three wires are attached to a pen-tip. Wire tensions are provided utilizing three DC servo motors which are attached to a solid frame on the user's body. This device is designed as input as well as output device for a wearable PC. User can write letters or figures on a virtual plate in space. Pen-tip trajectory in space is calculated using motor encoders and force feedback resulting from contact between pen and virtual plate is provided for constraining the pen-tip motion onto the virtual plane that can be easily setup by arbitrary non-collinear three points in space. In this paper kinematic model, workspace analysis, application analysis, control and prototype construction of this device are presented. Preliminary experiments on handwriting in space show feasibility of the proposed device in wearable environments.

• 한국CDE학회논문집
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• 제16권1호
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• pp.52-60
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• 2011

In this research, we developed a design system for a compressor of an air conditioner using solid CAD system. The developed design system has some characteristics. First, the design system used a configuration design method, so a designer can design a compressor very quickly by using the constructed master libraries. Next, the system was developed to be used not only by engineers but also by salesmen. It is very easy for a user to use it, so a salesman can get a result very easily with the design system. And it has some design modules which give a considerable convenience to designers. Actually, designers are accustomed to the module based design. Then, it has calculation and analysis functions. Volume and mass of a part, and interference between parts are calculated by using the geometric calculation function of a solid CAD system. Also a packaging calculation was implemented to get the smallest space to package compressors for transportation and storing. An interface with a program to analyze the vibration of a compressor was developed in this design system. The design system is similar to CBD (Case-Based Design) system in the view of the whole design process.

• 대한전자공학회논문지SD
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• 제48권7호
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• pp.57-64
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• 2011

SSD(Solid State Disk)는 호스트 인터페이스와 낸드 플래시 메모리의 대역폭 차이를 완충하기 위한 버퍼로 DRAM을 적용하고 있다. 본 논문에서는 대역폭이 높은 고가의 DRAM을 사용하는 대신 저비용으로 SSD의 성능을 향상시킬 수 있는 효과적인 방법을 제안하였다. SSD 데이터는 사용자 데이터, 사용자 데이터 관리를 위한 메타데이터, 데이터의 오류 제어를 위한 FEC(Forward Error Correction) 패리티/CRC(Cyclic Redundancy Check) 등 크게 세 가지로 구분할 수 있다. 본 논문에서는 데이터 유형 별 특성을 고려하여 성능을 향상시키기 위해 모니터링 시스템을 통한 가변적인 버스트 데이터 처리 방법과 페이지 단위를 이용한 FEC 패리티/CRC 방식을 적용하였다. 실험을 통하여 0.07%의 무시할만한 칩 면적의 증가만으로 평균 25.9%의 SSD 성능 개선을 확인할 수 있었다.

• 한국윤활학회:학술대회논문집
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• 한국윤활학회 2000년도 제31회 춘계학술대회
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• pp.258-262
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• 2000

This paper reports on the development of the analysis program of the valve train system, IV-TAP. It is essential to verify the stability of the design and to improve the performance of the system. In order to do that effi챠ently, it is required that integrated and interactive simulation analysis program. IV-TAP is developed in the base of the object-oriented, capsulation, modulization, OLE(objected linking and embedding) and variational design theory. So it contain the expandability and flexibility of the structure. In additon to that, it is programed to make the convenient user interface by using the visualization programming. It can support the modification of the valve element as well as the development of the valve system in the beginning. It is expected to reduce the money and effort for design the valve train system.

• 경영과학
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• 제17권2호
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• pp.151-159
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• 2000

This study applies factor analysis of an author cocitation frequency matrix derived from a database file that consists of a total of 1095 cited reference records taken from 95 citing decision support systems articles published in Korean journals. This study identified the influence of social psychology, cognitive psychology, management information systems, strategic management, and organizational behavior/organizational design to the development of group support systems, user-interface, and executive information systems research subspecialties. This research establishes a benchmark to be used in the future research, which is necessary to account for the ongoing changes in the intellectual development and structure of DSS Research in Korea before solid conclusion can be reached about the maturity and on-going development of the DSS field in Korean.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2003년도 춘계학술대회 논문집
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• pp.1626-1629
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• 2003

The study is expressed on the web browser using virtual reality of developer manufacturing process and method or manufactured goods conviction for designer and developer with visualized model. This study purpose of basic feature with VRML file and Java and VRML with AWT to get WC code was presented. The study process is equal to the real thing modeling on using Pro/Engineer and exports on the VRML1.0. The condition converts VRML1.0 to VRML2.0 on the CROSS ROADS. And then Cosmo World is coding and manufacturing simulation is expressed on the Cosmo Player.

• 한국진공학회지
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• 제5권4호
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• pp.292-300
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• 1996

비정질 고체시료에 입사한 이온의 산란과 탄성충돌에 의한 시료원자의 산란을 몬테칼로 방법으로 전산모사 프로그램을 개발하였다. 핵산란은 Kalbitzer와 Oetzmann이 실험적인 검증을 통하여 보정한 만유산란 단면적식을 사용하고, 전자적인 에너지 손실은 Lindhard-Scharff와 Bethe의 공식들을 내삽법으로 적용하였다. 그외의 공식들은 최근에 이르기까지 대부분의 전산모사 프로그램에서 일반적으로 사용하는 방법을 적용하였다. 이온들의 산란형태 및 산란 비거리 등의 결과가 기존의 TRIM과 PIBER 프로그램 결과뿐만 아니라 이미 보고된 실험치와 잘 일치함을 보여 주었다. 또한 프로그램의 사용자 편의를 위하여 Graphic User Interface 방식을 사용하였다.

• 한국디자인학회:학술대회논문집
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• 한국디자인학회 2001년도 Bulletin of The 5th Asian Design Conference International Symposium on Design Science
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• pp.27.1-27
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• 2001

The purpose of rhis research is proposing rhe sysrem which does information supporr as for a truck driver, and verifying the validity. First, it investigated by visiting the Transporr Company and interview for the present situation and the opinion on computerization from the operation administrator and truck drivers. Consequently, the problem of computerization could be found out to the present system. Next, the present system was considered. As for present machine system, human's "Choosing a function", srarts processing. Then this system is called "Function-Oriented-System". And three problems were extracted from this sysrem. As a solution of those problems, the Purpose-Oriented-System was proposed. In order to attain user's purpose, Agent that situation is perceived and works a function autonomously assumed that this system was inherent. 3D-Sceanrio-Expression was proposed as the description method of rhe task process. It consists of "Machine and Functional-Item axis", "Time axis", and "Situation-Item axis". And, the task execution process of Function-Oriented-System and Purpose-Oriented-System was compared using 3D-Sceanrio-Expression supposing the scene of truck business. As a resulr, rhe following two things could be found out. (1) The concepr of Purpose-Oriented-System that Agent is inherent is effective as siruarion correspondence machine. (2) A solid scenario can express the interaction rhar cannor be seen, in the relarion of rhe conventional Human and Machine.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1992년도 한국자동제어학술회의논문집(국내학술편); KOEX, Seoul; 19-21 Oct. 1992
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• pp.537-540
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• 1992

This paper presents Samsung CNC (Computer Numerical Controller) system with an intel 80486/487 as the main CPU and a 32 bit floating point DSP(Digital Signal Processor) TMS320C30 as the motion control CPU. The Samsung CNC system diverse user-frienly characteristics such as multi-tasking, powerful menu system, internal PLC system, and 2/3 dimensional graphics in wire and solid mode. The main CPU executes central processing program, user interface program, interpreter, BMI, etc while the motion control CPU carries out some interpolations, acceleration/deceleration, and PID control algorithm with feedforward terms. Complex interpolations except linear and circular ones are performed on the main control CPU. The experimental results for the circular interpolation under linear acceleration/deceleration shows that the proposed CNC system can be widely used in controlling machining centers with good machining accuracy.