• 제목/요약/키워드: PART

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다분야통합 설계 최적화(MDO) 문제의 정식화 기법에 대한 고찰 Part1: MDO의 정식화 관련된 Issue들

  • 양영순;정현승
    • 대한조선학회지
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    • 제37권3호
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    • pp.52-61
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    • 2000
  • 이상에서 MDO 기법의 정식화와 관련된 issue들인 해석의 연성과 관련된 SAND 및 NAND 기법과 의사결정의 분산과 관련된 다단계 최적화 기법을 살펴보았다.Part 2에서는 MDO기법의 정식화 방법들을 소개하고, 각 방법들이 Part1에서 언급된 issue들을 어떻게 다루고 있는지 살펴볼 것이다.

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A Study on CF IZO Application

  • 박재익;김동환;김승율;김태곤;박준용
    • 한국진공학회:학술대회논문집
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    • 한국진공학회 2008년도 제35회 하계학술대회 초록집
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    • pp.276-276
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    • 2008
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충전부에 접촉된 인체의 전위특성에 관한 연구 (A Study on the Potential Characteristics of Human-body Contacted the Charging Part)

  • 송길목;최충석;정연하;노영수;곽희로;박중신
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2004년도 하계학술대회 논문집 C
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    • pp.1942-1944
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    • 2004
  • In this paper, we studied on the potential characteristics of human-body contacted the charging part. A charging part of electrical facilities and the earth are simulated by the e1ectrode pole and conductive rubber plates respectively. As the results of these follows, when the potential distribution of the human-body contacted the charging part is far from the electrode pole, a lot of currents flow through the human-body. Besides human-body non-contacted the charging part is affected by step voltage. Therefore, we could find out the causes of the electric shock accidents and be expected to the data for minimization of human error occurred the workspace.

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Nonlinear dynamic FE analysis of structures consisting of rigid and deformable parts -Part II - Computer implementation and test examples

  • Rojek, J.;Kleiber, M.
    • Structural Engineering and Mechanics
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    • 제2권4호
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    • pp.327-343
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    • 1994
  • This is the second part of the paper (Rojek and Kleiber 1993) devoted to nonlinear dynamic analysis of structures consisting of rigid and deformable parts. The first part contains a theoretical formulation of nonlinear equations of motion for the coupled system as well as a solution algorithm. The second part presents the computer implementation of the equations derived in the first part with a short review of the capabilities of the computer program used and the library of finite elements. Details of material nonlinearity treatment are also given. The paper is illustrated by discussing a practical problem of a safety cab analysis for an agricultural tractor.

Feedback Error Learning and $H^{\infty}$-Control for Motor Control

  • Wongsura, Sirisak;Kongprawechnon, Waree;Phoojaruenchanachai, Suthee
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 2004년도 ICCAS
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    • pp.1981-1986
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    • 2004
  • In this study, the basic motor control system had been investigated. The controller for this study consists of two main parts, a feedforward controller part and a feedback controller part. Each part will deals with different control problems. The feedback controller deals with robustness and stability, while the feedforward controller deals with response speed. The feedforward controller, used to solve the tracking control problem, is adaptable. To make such a tracking perfect, an adaptive law based on Feedback Error Learning (FEL) is designed so that the feedforward controller becomes an inverse system of the controlled plant. The novelty of FEL method lies in its use of feedback error as a teaching signal for learning the inverse model. The theory in $H^{\infty}$-Control is selected to be applied in the feedback part to guarantee the stability and solve the robust stabilization problems. The simulation of each individual part and the integrated one are taken to clarify the study.

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Pedestrian Navigation System Reflecting Users Subjectivity and Taste

  • Akasaka, Yuta;Onisawa, Takehisa
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 2003년도 ICCAS
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    • pp.995-1000
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    • 2003
  • This paper proposes the pedestrian navigation system which deals with subjective information. This system consists of the route setting part and the instruction generation part. The route setting part chooses the route with highest subjective satisfaction degree. The instruction generation part gives users the instructions based on the users' sensuous feeling of distance with linguistic expressions. Fuzzy measures and integrals are applied to the calculation of the satisfaction degree of the route which reflects the users' taste for routes. The instruction generation part has database of users' cognitive distance. Users' cognitive distances are expressed by fuzzy sets that correspond to linguistic terms. The system generates the instructions with linguistic terms which have the highest fitness value for the users' sensuous feeling of distance. This paper also performs subjective experiments in order to confirm the validity of the present system.

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A Study on the National GIS (NGIS I) Project in Korea

  • Oh, Jong-Woo
    • 한국디지털정책학회:학술대회논문집
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    • 한국디지털정책학회 2004년도 International Conference on Digital Policy & Management
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    • pp.449-453
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    • 2004
  • GIS can be used on almost entire fields of the world, such as the national land management, environmental management, disaster management, enterprise activities, and general lives. GIS is called as an infrastructure of the knowledge information on the cultural society. For insuring the national power on the periods of the unlimited competition, it is very important to establish the national information infrastructure. Purpose of the NGIS project I is to development on living benefits of peoplethrough an efficiency of policy and rationalism of planning. In order to achievement of this purpose, the NGIS project I has been established using the national geographic information base planning. The NGIS project I consists of the master management part, the geographic information part, the technique development part, the standardization part, and the land Information part. These five GIS project parts are operated by four governmental ministers and related institutions, such as minister of transportation and construction, minister of science and technology, minister of information and communication, minister of administrative and home affaires. The NGIS I project is to establishment of the nation spatial information systems, such as various nationwide digital maps, GIS technique development, GIS education, GIS standardization, and GIS researches.

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단위운송량에 바탕을 둔 물류흐름으로 된 유연제조 시스템에서 작업경로 선택 (Part Route Selection in FMS with Unit Load Based Material Handling)

  • 장석화
    • 산업경영시스템학회지
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    • 제19권40호
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    • pp.107-117
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    • 1996
  • This paper considers the part assignment to workstations in flexible manufactuirng system (FMS). Parts are processed through several workstations according to processing order. The machines of each workstation can do multiple Processing functions. Therefore, a processing of a part can be processed in several workstations, which are non-identical in functional performance. Although a processing of a part can be processed in the multiple workstations, it has to be processed in only one among available several workstations, Parts are transported with unit load by automated guided vehicles (AGVs). The criteria of part assignment is to minimize the maximum value of the processing times of each workstation and the total transport times of vehicles. Model formulation is suggested, and numerical example is shown.

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Development of The Multi Forming Type Ultra Precision Die for Sheet Metal ( Part I )- Production Part and Strip Process Layout -

  • Sim, Sung-Bo;Jang, Chan-Ho;Sung, Yul-Min
    • 한국해양공학회:학술대회논문집
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    • 한국해양공학회 2001년도 추계학술대회 논문집
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    • pp.253-257
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    • 2001
  • This study reveals the sheet metal working with multi-forming type ultra precision process. They require analysis of many kinds of important factors, i.e. theory and practice of metal press working and its phenomena, die structure, machining condition for die making, die material, heat treatment of die components, know-how and so on. In this study, we designed and constructed a multi-forming ultra precision progressive die as a bending and drawing working of multi-stage and performed through the try out for thin sheet metal. This part I of papers related to the analysis of production part and strip process layout design through the metal forming simulation by DEFORM and IDEAS.

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