• 대한전기학회논문지:전기기기및에너지변환시스템부문B
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• 제53권2호
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• pp.82-89
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• 2004

In this paper, an active magnetic bearing(AMB) system is designed and controlled using a digital Proportional-Integral-Derivative(PID) control concept. The plant dynamics consisting of actuator and rigid rotor dynamics are described. A digital PID controller with a global control and a local control concept is designed and implemented using digital signal processor. Some experiments are conducted with each global control and local control concept. These include start-up test, impulse test, whirl response, and generator load test. The experimental results and comparison between those of a global control and a local control indicate that the global control of concept has impressive static and dynamic control performance for the prototype considered. From the whirl test, the developed system set can be controlled within about $\pm10\mu\textrm{m}$ gap variation at the rotational speed of 6000rpm and generate the AC power of frequency of $60\textrm{Hz}$, voltage of 100V and current of 0.8$\textit{A}$.

• 패션비즈니스
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• 제13권2호
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• pp.100-114
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• 2009

In Honam province, the cultural prototype are largely unknown to the people, also the research on this subject are scarce, the artistic excellence, somewhat under evaluated, both in our country and internationally. It is imperative that we develop the modern design using this prototype. thereby apply it to many areas of cultural products. We should extend the dimension not only to the local festival but also to the mass production resulting in the commercial gains. The Unjusa Buddha festival for promoting the public relation would be greatly benefited by using the concept of the temple, the local prototype, by which we expect to create a ingenious textile design pattern, coinciding with the main purpose of this study. The ancient material around Unjusa come to be the subject of our textile design by way of selecting the most remarkable ones of heritage among the materials of Unjusa. In the long run, the harmonious contrast of both traditional and modern image were sought in this study. Designed patterns were edited using Adobe Photoshop CS3, a multi-purpose graphic program and were simulated in the towel for visual presentation. The design is of two kinds, the one is of the free style using combinations of reclining Buddha, stone Buddha, stone pagoda, and geometric patterns freely not to be standardized. The other one is mixing of lotus pattern, reclining Buddha, and geometric patterns. These designs were applied delicately on the towel, necktie and handkerchief, and the various colors were suggested by the 6 color ways. The brilliance of our traditional cultural property should be noted by these designs and I hope that this study would be a help to develop our cultural prototype and make a product of using the outstanding heritage.

• 한국의상디자인학회지
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• 제9권1호
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• pp.149-159
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• 2007

With the help of the cooperative efforts made in the interdisciplinary studies among the different fields of computers, textiles and computer in the modem society based on knowledge-information, Smart Clothing, which is the combination of wearable Technology and clothing has been drawn. This study is to inspect the design of Smart school uniform, which if based on Wearable Technology, to meet the need for the PDG(Post Digital Generation) who want to require rapid and the convenient information. This study is aimed to quest for the direction of study in Wearable Technology through theoretical studies made in the field the Computer information communications Engineering, seminars in the field of Smart Textile and documentary study. In addition to them, this study is to search for the value for the school uniform in the PDG who are a group of potential consumers for the Smart Clothing, the environment in digitalized life and the need for the Wearable Technology. Based on this research, the concept of design reflecting the need for the characteristic and functions in the PDG was drawn and Design Prototype of Smart Jacket on the base of Wearable Technology was presented.

• Smart Structures and Systems
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• 제8권1호
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• pp.119-137
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• 2011

A bio-inspired two-mode structural health monitoring (SHM) system based on the Na$\ddot{i}$ve Bayes (NB) classification method is discussed in this paper. To implement the molecular biology based Deoxyribonucleic acid (DNA) array concept in structural health monitoring, which has been demonstrated to be superior in disease detection, two types of array expression data have been proposed for the development of the SHM algorithm. For the micro-vibration mode, a two-tier auto-regression with exogenous (AR-ARX) process is used to extract the expression array from the recorded structural time history while an ARX process is applied for the analysis of the earthquake mode. The health condition of the structure is then determined using the NB classification method. In addition, the union concept in probability is used to improve the accuracy of the system. To verify the performance and reliability of the SHM algorithm, a downscaled eight-storey steel building located at the shaking table of the National Center for Research on Earthquake Engineering (NCREE) was used as the benchmark structure. The structural response from different damage levels and locations was collected and incorporated in the database to aid the structural health monitoring process. Preliminary verification has demonstrated that the structure health condition can be precisely detected by the proposed algorithm. To implement the developed SHM system in a practical application, a SHM prototype consisting of the input sensing module, the transmission module, and the SHM platform was developed. The vibration data were first measured by the deployed sensor, and subsequently the SHM mode corresponding to the desired excitation is chosen automatically to quickly evaluate the health condition of the structure. Test results from the ambient vibration and shaking table test showed that the condition and location of the benchmark structure damage can be successfully detected by the proposed SHM prototype system, and the information is instantaneously transmitted to a remote server to facilitate real-time monitoring. Implementing the bio-inspired two-mode SHM practically has been successfully demonstrated.

• Journal of Communications and Networks
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• 제4권4호
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• pp.363-369
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• 2002

Towards the deployment of 3rd generation systems, Virtual Home Environment (VHE), stemming from 3GPP, appears to be a powerful concept advocating the provision and delivery of personalized services to roaming users across network and terminal boundaries. This paper aims to expose the pathway for materializing the VHE concept, via the specification, implementation and evaluation of a prototype. Core aspects for realizing the concept such as the business and roaming models are presented, while a VHE enabling architecture utilizing key technologies (OSA/Parlay, MExE, and USAT) is introduced. The proposed architecture has already been evaluated by performing an initial trial demonstration. Currently it is being extended to support VHE service provision to roaming users, an aspect to be addressed by the final trial.

• 한국가구학회지
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• 제23권1호
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• pp.75-83
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• 2012

Space dominates all the art activities human do and plays a role of providing aesthetic emotion. Architecture, sculpture, painting, and furniture, etc. these two and three dimensional works are represented in space and interpreted the role of its form, structure and function. Each area is different, but space has been studied in philosophy, physics, geometry, and mathematical studies, etc. and has been consistently interpreted and represented relating to a variety of human creative activity. Furniture is also three dimensional art being dependent on space. In the United States in 2004, I made the living room bench by applying the spatial concept at Rochester Institute of Technology. Two years later, this design was adopted by wendell Castle Collection, an American furniture company, then prototype were made and tested three times during a year, and then since 2007 as indoor benches it has been manufactured in the United States. The study's purpose is to order the process of its development based on the experience of bench production applied the spatial concept, and by analyzing the properties of spatial concept, I am planning to propose a new concept on interaction with the space and furniture for next.

• 지능정보연구
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• 제10권1호
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• pp.93-107
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• 2004

급속한 인터넷의 확산으로 이제 웹은 단지 커뮤니케이션이나 홍보, 쇼핑의 수단뿐이 아닌 정보의 보급 및 창고로서의 역할이 더욱 커지고 있다. 또한, 과거의 웹 기반 기술인 하이퍼텍스트에 멀티미디어 기술이 접목되면서 하이퍼미디어 개념이 도입되어 텍스트 외의 이미지, 동영상, 사운드 등 다양한 형식의 미디어를 통해 정보를 접할 수 있게 되었다. 그러나, 이러한 정보공간에서 정보의 양이 기하급수적으로 증가함에 따라 웹 이용자들은 인지과부하(Cognitive overload)로 인하여 웹 상에서 방향감 상실, 정보공간에서 길 잃음 둥의 다양한 어려움을 겪고 있다. 이러한 문제를 해결하기 위해 많은 연구자들이 지속적으로 연구하고 있으며 그 중의 하나가 공간 개념(Spatial concept)을 적용한 공간 메타포(Spatial metaphor) 연구이다. 본 연구에서는 이러한 공간 메타포 개념을 이용하여 새로운 개념의 네비게이션 방식의 웹사이트를 개발하고 이를 Atomic-Map이라고 하였다. Davis 교수가 제안한 기술수용모형 (TAM) 모형을 이용하여 Atomic-Map의 사용성을 분석한 결과 Atomic-Map을 이용하여 정보공간에서 복잡한 네비게이션 하에서 발생할 수 있는 여러 가지 문제를 해결할 수 있음을 실증적으로 검증하였다.

• 한국전자통신학회논문지
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• 제9권7호
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• pp.779-789
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• 2014

안드로이드 기반의 스마트폰을 공장자동화 및 생산자동화 분야에서의 활용이 중요하게 여겨지고 있다. 일반적으로 OMA DM 표준은 공장자동화 및 생산자동화 환경을 위한 중요한 인프라 구조 기술이다. 본 논문에서는 OMA DM 플랫폼 설계 및 구현에 대해 연구한다. 개발된 프로토타입은 세 가지 모듈 즉 DMS, FUMO 그리고 SCOMO로 구성된다. 그리고 EAP 및 AES 개념을 응용한 보안 모듈도 제시되었다. 제안된 보안 모듈은 공장자동화를 위해 안드로이드 기반의 스마트폰을 활용한 DMS, FUMO 및 SCOMO 모듈 간 통신에서 안전한 통신을 보장하기 위해 적용된다. 시뮬레이션 결과에 의하면 구현된 해당 프로토타입은 공장자동화 환경에서 좋은 성능을 보이며 보안성을 보장하면서 여러 공장자동화, 생산자동화 및 사무자동화 환경에서 활용이 가능하다.

• 한국실내디자인학회논문집
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• 제24권3호
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• pp.79-86
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• 2015

Myths and architectural spaces are cultural products symbolizing ideologies and objects respectively. Myth has the structure and the contents of a unique view of the world that reflects thoughts and representations of the nationalities. This study is about 'the spaces of the memory' adapted by the mythic tradition among many aspects of the Japanese tradition. The process of this study is illustrated as follows: At first, it mentions the concept of Gilbert Durand's mythic imaginaries and prototype with the method on how the myth is applied to the architectural spaces in the cultural context. Secondly, It clarifies basic meaning arrangement of the Japanese traditional spaces related to the myth. It shows sourceful 'prototipical system' that lies in the relation between thoughts and representations, regarding the shinto's spaces in terms of mythical imaginaries and Japanness. Thirdly, it ascertains mythical structure represented in the traditional space designs on terms with 'prototype' from symbolic system of the myth. It selects the cases among Japanese contemporary architects's works designed after 1960's, and analyses the meanings. In conclusion, it clarifies that this way can be a suggestion as the space design method combining the human's imaginary property with the time-stratigraphic region, and offering creative ideas for the strategy of the space design brand image that embraces a wide range of culture, ecology, and sensibility.

• 한국기계가공학회지
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• 제2권2호
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• pp.14-21
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• 2003

Rapid prototyping(RP) has been used for design verification and proto sample or mold manufacturing. Many RP systems have been introduced into the market during the past 15 years. However, until now, the systems have used mainly for external physical models (mono function), and have the basic but critical limitation of one material on one stage (mono material). To overcome the limitations of mono-material and mono-function of conventional. RP systems, the concept of Functional Phototype Development (FPD) is newly proposed in this paper FPD provides the necessary prototype functions such as mechanical, optical, chemical and electrical properties in order to meet the broad requirements of the industry. The paper illustrates the representative achievements of electronic components such as the multi-layer printed circuit board(MLB). Experimental results demonstrate that FPD has great potential applied to broad industrial uses and that It Will be a powerful tool in the neat future.