• 한국CDE학회논문집
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• 제5권4호
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• pp.327-335
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• 2000

The spent fuel rod extracting machine is automatically operated in high radioactive environment, so high reliability of operation is required. In this paper, to enhance the reliability of this machine by providing a close monitoring capability. a real time graphic simulation method is suggested. This method utilizes conventional IGRIP (Interactive Graphics Robot Instruction Program) 3D graphic simulation tool to visualize and simulate the 3D graphic model of this machine. Also, the dedicated protocol is defined for transmission of the operational data of the machine. The real time graphic simulation is realized by developing the socket module between a graphic workstation and a machine control computer through the TCP/IP network and by dividing the 3D graphic simulation GSL(Graphic Simulation Language) program as a small sized sub routine. The suggested method is implemented while automatically operating the rod extracting machine. The result of implementation shows that the real time 3D graphic simulation is well synchronized with the actual machine according to the operational data.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1997년도 한국자동제어학술회의논문집; 한국전력공사 서울연수원; 17-18 Oct. 1997
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• pp.848-851
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• 1997

A graphic simulation program is developed to assimilate the remote dismantling process of research nuclear reactors. This program makes extensive use of a commercial robot graphic instruction program. Firstly, a realistic graphic model of research reactors are built along with various dismantling equipments. Using the graphic instruction languages provided by IGRIP, then, a graphic process simulation program is developed that operates interactively with the user. Consequently, it is made possible for a process designer to visualize an arbitrary dismantling sequence and interactively modify the process. It is expected that the developed system will be utilized as an effective operator aid in both design and execution phases of remote dismantling of research reactor.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2001년도 춘계학술대회 논문집
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• pp.631-634
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• 2001

In this study, the graphic simulation system of multi joint manipulator is developed to analyze and optimize the remote handling processes for the spent fuel assembly. This system consists of a 3-D graphical modeling system, a device assembling system, and a motion simulation system. To analyze and optimize the processes involved in multi-joint manipulator operation such as NFBC transportation process and bottom nozzle removal process, the virtual work place is implemented using a computer graphic technology. This virtual workcell is exactly same as that of the real environment. This graphic simulation system of the multi-joint manipulator can be effectively used for designing the main processes and maintenance processes of the spent fuel management.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2000년도 추계학술대회 논문집
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• pp.639-642
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• 2000

• 로봇학회논문지
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• 제2권3호
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• pp.242-248
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• 2007

Robot system development consists of several sub-tasks such as layout design, motion planing, and sensor programming etc. In general, on-line programming and debugging for such tasks demands burdensome time and labor costs, which motivates an off-line graphic simulation system. MSRS(Microsoft Robotics Studio) released in recent years is an appropriate tool for the graphic simulation system since it supports CCR(Concurrency and Coordination Runtime), DSS(Decentralized System Services), and dynamics simulation based on PhysX and graphic animation as well. In this paper, we developed an MSRS based network simulation system for quadruped walking robots, which controls virtual 3D graphic robots existing in remote side through internet.

• International Journal of Control, Automation, and Systems
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• 제3권3호
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• pp.493-501
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• 2005

A power plant simulation tool ('PowerSim') has been developed with 10 years experience from the development of a plant simulator for efficient modeling of a power plant. PowerSim is the first developed tool in Korea for plant simulation with various plant component models, instructor station function and the Graphic Model Builder (GMB). PowerSim is composed of a graphic editor using general purpose design software, a netlist converter, component models, the scheduler, Instructor Station and an executive. The graphic editor generates a netlist that shows the connection status of the various plant components from the Simdiagram, which is drawn by Icon Drag method supported by GUI environment of the PowerSim. Netlist Converter normalizes the connection status of the components. Scheduler makes scheduling for the execution of the device models according to the netlist. Therefore, the user makes Simdiagram based on the plant Pipe and Instrument Drawing (P&ID) and inputs the plant data for automatic simulating execution. This paper introduces Graphic Model Builder (GMB), instructor station, executive and the detailed introduction of thermal-hydraulic modeling. This paper will also introduce basic ideas on how the simulation Diagram, based on netlist generated from general purpose design software, is made and how the system is organized. The developed tool has been verified through the simulation of a real power plant.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2009년도 추계학술대회
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• pp.38-39
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• 2009

시뮬레이션 가시화 기술은 사용자가 직접 접하게 되는 기술이며, 시뮬레이터 사용자들은 보다 빠르고, 보다 현실적이며 보다 직관적인 영상을 요구하고 있다. 컴퓨팅 기술 및 영상장비 기술 등의 하드웨어는 우수한 성능으로 발전된 반면, 현재 일반적으로 선박 운항 시뮬레이터에 사용되고 있는 그래픽 렌더링 엔진은 그 한계를 나타내고 있다. 이러한 배경에서 본 논문에서는 예부선 시뮬레이션 시스템의 가시화툴 위해 필요한 시스템의 요구사항을 도출하고 상용 및 공개용 그래픽 렌더링 엔진에 대한 조사/검토하고, 시스템 요구사항을 만족시키기 위한 그래픽 렌더링 엔진의 장단점을 분석하여, 향후 그래픽 렌더링 엔진의 활용가능성을 평가하였다.

• 만화애니메이션 연구
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• 통권17호
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• pp.188-204
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• 2009

본 연구는 3차원 컴퓨터 그래픽 제작 산업분야에서 최근 가장 경쟁력 있는 분야로 대두되고 있는 연구/개발(R&D) 분야에서 "불의 표현을 중심으로 국내 관련업체들의 기술적 한계를 제시하고 해외 및 국내 애니메이션 제작에서 성공한 기술적 R&D의 과정과 그 결과를 통해 이러한 기술적 한계를 어떻게 극복해야 하는지에 대한 해답을 제시함으로써 과도기를 거쳐 제2의 도약기를 준비하는 국내 컴퓨터 그래픽 애니메이션 산업의 부흥에 도움이 되고자하는 목적으로 연구를 진행하고 있다. 흔히 CT와 IT의 상호 보완적인 특징을 활용한다면 이러한 문제 해결을 넘어 기술적 우위를 확보할 수 있다. 우리는 특히 컴퓨터 그래픽 제작 과정 중 물, 불, 바람, 구름 등의 Simulation System분야와 수십만 캐릭터의 집단행동 또는 단체행동 System 활용도를 중심으로 연구를 진행하였다. 그 중에서 본 논문은 불의 표현에 중점을 두고 실제 작업에 활용된 데이터를 기준으로 그 해답을 제시하였으며 기존의 국내에서 사용하던 전통적 활용방법과 각 연구단체에서 활발하게 진행 중인 프로젝트를 소개하고 본 연구의 적용과정과 결과를 소개함으로써 현업 종사자들에게 향 후 R&D 분야의 나아갈 방향을 제시하고자한다. 창조적인 부재에 너무 집착한 나머지 기술적인 연구 개발부분에의 소홀함이 향 후 미국이나 일본과의 더 큰 기술적 문제로 대두될 수 있음을 명심하고 지금부터라도 과감하고 결단력 있는 기술력의 연구 개발이 필요한 시점이다.

• 한국인쇄학회지
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• 제28권1호
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• pp.1-13
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• 2010

Gravure printing and manufacturing of advanced electronic components in a way that is going extra hold position. It is to print the electronic components of the rapid productivity improvements as well as cost-saving and environment-friendly industries such as the transition is a big advantage. However the mechanism of gravure is difficult to study scientifically because of high speed and excessively small size of the cell. To approach the mechanism we experimented using gravure printability. The condition of variables of IGT is pressure and velocity. By using Flow-3D simulation software, we built up the theoretical model under the constant variables. Then, we compared the real test with the simulation results. Therefore, it is studied the mechanism of gravure scientifically and it can be analysed the effect of the variable conditions.

• 한국인쇄학회지
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• 제30권2호
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• pp.23-33
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• 2012

With the development of many display technologies currently applied to them in the field of printed electronics, there have been many researches that high resolution printing for thin and uniform pattern. In this paper, printing ink flow properties in the reverse offset mechanism were simulated. The aim of this research is to expect the ink flow behavior between cliches to make fine pattern by a printing technique which is a reverse offset. The simulation results show that almost the same as the experiments and the flow behavior according to the ink film thickness and printing pressure changes could be expected.