• 한국철도학회:학술대회논문집
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• 한국철도학회 2002년도 추계학술대회 논문집(I)
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• pp.202-207
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• 2002

The rubber type AGT system is operated by driverless that signaling is CBTC type. The system function is acomplished exactly to obtain the safety and reliability of system and the system is designed to minimize risk. In order to design the system, the functional analysis is performed. Recently functional analysis is performed by RDD-100 which is used and verified by aerospace, military, etc. Therefore, The design tool RDD-100 is used to perform functional analysis in AGT system development project.

• 공학교육연구
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• 제6권2호
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• pp.22-29
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• 2003

하드웨어 설계 교육의 궁극적인 목표는 학생들로 하여금 시스템 설계능력을 갖추도록 배양하는 데에 있다. 그러나 상당수의 기존 교과과정은 설계 자체보다는 개별적인 빌딩 블록의 내부동작 원리의 이해를 중심으로 운영되는 것이 현실이다. 따라서, 학생들의 학습동기 유발에 실패할 뿐만 아니라 정작 현장에서 필요로 하는 시스템적 관점에서의 설계를 충분히 경험하지 못하는 것이 문제점으로 지적된다. 이러한 문제점들을 극복하기 위한 대안으로, 과목의 초기 도입부에 추상화의 수준을 높여서 시스템의 전체 설계를 조망할 수 있도록 하고, 점차로 추상화의 단계를 낮추어서 결국 소자의 동작 원리를 탐구하는데 이르도록 강의의 순서를 역전시킬 필요성이 있다. 본 논문에서는 하드웨어 설계의 입문 과목인 논리설계 교과목을 대상으로 하여, 시스템 수준의 설계표현 및 검증방식을 먼저 소개하고 소자에 대한 세부지식은 후반부에 소개하는 새로운 교육방식을 제안하고 이의 타당성을 검증하기 위해 교내의 동아리를 활용한 비정규 교육과정에 이를 도입한 사례를 소개한다.

• 한국가구학회지
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• 제23권1호
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• pp.47-56
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• 2012

This study particularly looked at educational philosophy and content of Design Academy Eindhoven in Holland which provides multidisciplinary design education. For it might be important data for examining the educational substance and directivity in design that help construct education system in design for a new era among the varying design paradigm. The biggest feature of DAE education system designed for students to optimize their ability with systematic education of 8 contexts with 4 approaches through innovative specialty system. Besides, their interaction helps students major in what is individual specialty. Most of all, the study on the contents of DAE's multidisciplinary education is expected to be significant data for our design education that lacks integrative perspective in the respect that students might be able to develop their identity as an individual designer in changing society beyond the mere technical and formative level of design.

• 정보저장시스템학회논문집
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• 제1권2호
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• pp.137-142
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• 2005

In this paper, we propose a new servo system design strategy to reduce the position error signal(PES) and track mis-registration(TMR) in magnetic disk drive systems. The proposed method provides a systematic design procedure based on the plant model and an optimal solution via an optimization with a 'Robust Random Neighborhood Search(RRNS)' algorithm. In addition, it guarantees the minimum PES level as well as stability to parametric uncertainties. Furthermore, the proposed method can be used to estimate the performance at the design stage and thus can reduce the cost and time for the design of the next generation product. The reduction of PES as well as robust stability is demonstrated by simulation and experiments.

• 한국조명전기설비학회:학술대회논문집
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• 한국조명전기설비학회 2005년도 춘계학술대회논문집
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• pp.415-417
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• 2005

In this paper, we propose a intelligent controller design method for the water level control of the power plant drum in the form of nonminimum phase system. The proposed method is based on T. Takagi and M. Sugeno's fuzzy model. And we illustrate the improved characteristics as the simulation results, comparing with the conventional the PID and LQ controller design method

• 한국산업융합학회 논문집
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• 제10권4호
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• pp.271-274
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• 2007

In this paper, we propose a intelligent controller design method for the water level control of the power plant drum in the form of nonminimum phase system. The proposed method is based on T. Takagi and M. Sugeno's fuzzy model. And we illustrate the improved characteristics as the simulation results, comparing with the conventional the PID and LQ controller design method.

• 한국지진공학회논문집
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• 제2권1호
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• pp.95-111
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• 1998

본 연구에서 구조요소 및 구조계에 대한 지진손상 해석방법의 개념 및 과정을 연구하였다. 구조요소에 대한 지진손상도 해석은 구조요소나 단자유도계에 관한 기존의 방법으로 가장 널리사용되고 있는 Park & Ang 방법에 의하여 예제구조물에 대하여 수행하였다. 구조계에 대한 지진손상도 해석을 수행하기 위해서는 두 가지의 과정을 사용하였다. 첫 번째 과정은 구조계에 해당하는 지진응답을 구조계 대표응답법과 등가단자유도계 응답법을 이용하여 구한 후, 구조계의 지진손상도는 기존의 단자유도계나 구조요소에 관한 방법을 이용하여 구조계의 지진응답으로부터 구한다. 두 번째 구조요소에 대한 지진손상도 해석결과를 손상지수 조합법을 이용하여 선형적으로 조합하여 구조계의 지진손상도를 구한다. 각 방법의 유용성은 몇 개의 다른 지진과 예제구조물에 대하여 비교를 통하여 연구하였다.

• International Journal of Aeronautical and Space Sciences
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• 제6권1호
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• pp.89-96
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• 2005

Ducted fans have advantages in noise as well as operational safety aspects compared to conventional tail rotors and are used as an anti-torque system for various classes of helicopters. The final goal of this study is to develop a ducted fan anti-torque system which can replace conventional tail rotors of existing helicopters to achieve safety enhancement and low noise level. In this paper, a conceptual design process and the results are described. Initially, the design requirement and the design parameter characteristics are analysed, and then initial sizing and configuration design are performed. There are several configuration changes due to specific technical reasons in each case. Finally, the required power and the pitch link load are predicted as an initial estimation. The conceptual design technique for the ducted fan in this study can be easily applied to the design of other ducted fans such as the lift fan for unmanned aerial vehicle.

• 국제초고층학회논문집
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• 제2권3호
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• pp.271-283
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• 2013

This paper introduces the current status of high-rise building design in Japan, with reference to some recent projects. Firstly, the design approval system and procedures for high-rise buildings and structures in Japan are introduced. Then, performance-based wind-resistant design of a 300 m-high building, Abeno Harukas, is introduced, where building configuration, superstructure systems and various damping devices are sophisticatedly integrated to ensure a higher level of safety and comfort against wind actions. Next, design of a 213 m-high building is introduced with special attention to habitability against the wind-induced horizontal motion. Finally, performance-based wind-resistant design of a 634 m-high tower, Tokyo Sky Tree, is introduced. For this structure, the core column system was adopted to satisfy the strict design requirements due to the severest level of seismic excitations and wind actions.

• 디지털융복합연구
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• 제4권2호
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• pp.51-65
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• 2006

This study is to evaluate the morality of teenagers with regard to features of justice. On the basis of the findings, an online morality level test system is designed and implemented to help students understand themselves better and to increase moral maturity through this self-test method based on Kohlberg's Morality Development Level. The main purpose of this study is to help students test and evaluate their morality, and it will be contributed to slough off egocentrism and to orient a relationship based on a mutual respect by using the embodied system. If this system can be applied successfully, an effective improvement on students' further education guidance may be gained because the test and its results are made in the system simultaneously. Also this easy and fast test system can attain much more economical effects than a written test.