• 전력전자학회:학술대회논문집
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• 전력전자학회 1999년도 전력전자학술대회 논문집
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• pp.299-302
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• 1999

An analog implementation of space vector PWM is proposed in this paper. It is shown that a space vector PWM can be implemented by adding a zero sequency voltage to reference voltage of triangle comparison PWM. The proposed scheme is implemented by six diodes and, an operational amplifier circuit and, a few resistors.

• 한국재난정보학회 논문집
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• 제8권4호
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• pp.419-431
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• 2012

우주기상 극대기인 2003년은 지구상에 크나큰 재앙을 초래할 것으로 예견되고 있다. 특히 근년에 들어 지자기 폭풍에 의한 손상과 가시화 될 수 있는 대 폭풍피해 사례를 보이고 있다. 본 연구에서는 이상에서 제시된 문제점에 대한 피해분석에 따른 궁극적인 우주기상정보시스템 모델 구축으로 피해 저감하고 대비방안을 설정하는 것이다. 구현방법으로는 uIT기반과 GIS기반의 우주기상 정보시스템 구축으로 우주폭풍에서 방사되는 우주복사폭풍(flare), 우주입자폭풍(solar proton event), 우주자기폭풍(geomagnetic storm) 등에 의한 분야별 폭풍피해를 분석하여 유형별 피해 대응에 대비할 수 있도록 하였다. 이로써 공간정보기반의 우주폭풍 전기전자 피해대비 운영관리시스템 구현은 GIS기법에 의한 의사결정지원 시스템으로 피해예측 및 방재환경을 스마트 IT환경과 융합한 첨단 정보시스템으로 구현하여 인명과 재산을 보전할 수 있는 방안으로 활용될 수 있을 것이다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2007년도 제38회 하계학술대회
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• pp.1084-1085
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• 2007

This paper presents a vector control implementation for SPMSM(Surface-mounted Permanent Magnet Synchronous Motor) using dSPACE 1104 system and MATLAB/SIMULINK. SPMSM can be treated as a DC motor provided that currents of flux and torque component are controlled independently using vector control. Therefore various control algorithms for conventional DC motor control can be adopted to SPMSM. The system is designed to improve set-point tracking capability, fast response, and accuracy. In This paper, d-q equivalent modeling of PMSM is derived based on vector control theory. The PI controller is used for speed control and state feedback PI current control method is used for current control. For the implementation of high performance vector control system, dSPACE 1104 system is used. Simulations and experiments were carried out to examine validity of the proposed vector control implementation.

• 한국우주과학회:학술대회논문집(한국우주과학회보)
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• 한국우주과학회 2004년도 한국우주과학회보 제13권2호
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• pp.274-277
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• 2004

KSLV (Korea Space Launch Vehicle)-I telemetry system will be composed of two telemetry streams: a lower stage telemetry stream and an upper stage telemetry stream. In this paper, the authors present design, implementation and test results of the upper stage telemetry interface for KSLV-I. The telemetry system currently is in the stage of the prototype model development, and its engineering model and flight model will be developed in the near future.

• 대한전기학회논문지:전기기기및에너지변환시스템부문B
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• 제49권10호
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• pp.675-682
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• 2000

An easier implementation method of the field oriented control of induction machine using Matlab/Simulink and dSpace board is proposed in this paper. The total system for the control of induction motor is modeled with the help of Matlab/Simulink. These models consist of induction motor block, SVPWM inverter block and control algorithm block, etc. And this system is simultaneously simulated and experimented in Matlab/Simulink environment with dSpace borad (DS1102). It is possible that Matlab and dSpace board compiler can make $^'{\ast}.c'\;and\;^'{\ast}.obj'$ file of models designed in Matlab/Simulink environment automatically. Both Simulation and experimental results are given.

• 한국인터넷방송통신학회논문지
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• 제9권5호
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• pp.175-181
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• 2009

본 논문에서는 Scale-space filtering 방법을 사용하여 홍채인식을 이용한 보안시스템을 구현 하였다. 적외선 카메라를 이용하여 영상을 획득하고 Scale-space filtering과 영상의 Concavity를 이용하여 2차원 코드를 추출하여 서버에 저장된 코드와 비교하여 신분을 인식하는 방법을 사용하였다. 보안 시스템을 구현한 후 실제 홍채영상을 이용하여 실험한 후 FAR과 FRR을 측정하여 시스템의 성능을 입증하였다. 실험결과는 제안한 방법이 매우 적합하다는 것을 보여준다.

• 한국실내디자인학회논문집
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• 제21권5호
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• pp.317-327
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• 2012

Recent studies show that social networking within community is becoming more valuable than individualism, and many discussions of importance of social networking are taking place. In architectural term, the ultimate goal of designing public community space is to increase retention of people. Retention of people, in other words, making people "Stay Longer" is not exactly same as "The purpose of Public Community Space", but it is one of the most effective methods to increase retention of people. An attempt of increasing retention of user through offering public community space suggests a significant change in spatial composition of Herman Hertzberger's cultural space as they are becoming a new social interaction trend. This study aims to analyze architectural progress for the implementation of public of Herman Hertzberger's cultural project. Access. The Characteristics of public community space used in cultural space were extracted and organized into the systemized elements. The systemized elements are comfort, connect, continuity, sphere, transition, and abide. Also, the extracted elements were activated Herman Hertzberger's cultural space and processed the his architectural characteristics.

• 한국항공우주학회지
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• 제38권9호
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• pp.925-932
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• 2010

스페이스와이어는 우주비행체 구성 요소들 간의 고속 정보 전달을 위하여 링크 또는 네트워크 형태로 연결시켜주는 표준으로서 기존의 방식보다 저렴한 비용에 뛰어난 성능을 발휘하도록 고안되었다. 스페이스와이어는 ESA, NASA 그리고 JAXA의 다수의 우주개발 프로그램에 적용되었고 향후 국내의 인공위성 개발 프로그램에 적용될 것이다. 스페이스와이어 기술을 효과적으로 유연하게 적용하기 위해서는 관련 기술의 확보가 필수적이다. 본 논문은 과학기술위성 3호의 대용량 메모리 유닛에 적용되는 스페이스와이어 링크 인터페이스의 개발 결과에 관해 소개한다.

• 한국디지털정책학회:학술대회논문집
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• 한국디지털정책학회 2006년도 추계학술대회
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• pp.409-418
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• 2006

The purpose of this paper is to present a low cost u-City portal development idea and to propose an exclusive system architecture using 3-D interface layers. 3-D interface layers consist of reused ideas of data from existed public data produced from GIS in order to reduce Produce Processes. 3-D interface layers implement a u-City portal systems that tags from physical spaces 1 ink to mobiles from ubiquitous networks between electronic spaces and physical spaces. Primary produce of this study exhibits an exclusive architecture of a u-City portal for speedy and low cost web 3-D interface layers and GIS data, and for implementation interface of 3-D types on USN of physical spaces. Secondary produce of this study represents that a 3-D u-City portal system has visualized speedy implementation characteristics for implementation of the application systems to execute an ubiquitous concept by returning electronic space to physical space, and to present the low cost 3-D u-City portal than an existed 3-D u-city development strategy. Therefore continuous expansion and study of the 3-D interface physical space under a 상황인지(Context Awareness)ubiquitous will appear the innovated u-City portal systems.

• 한국디지털건축인테리어학회논문집
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• 제12권3호
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• pp.91-100
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• 2012

This paper not only reviews recent trends and characteristics of welfare facilities, but also proposes main components such as building materials and furniture applying a traditional Korean house. This paper aims to utilize interior design and construction materials of unit-care welfare facility applying the traditional Korean house. Results are as follows. 1. The rate of the private bedroom as elderly welfare facilities is 63.1%; on the contrary, the rate of the 4-person bedroom is 63.2%. The expansion of the private bedroom is an urgent need in order to improve the quality of residences. 2. According to elderly services needs and revitalization for the traditional Korean house, it is required to implementation the unit-care facilities for the elderly and interior design for the traditional Korean house. 3. The interior design for the traditional Korean house is applied to elderly living space such as a bedroom and a living room; it is not applied to care space and management space such as a nurse station and an office occupied by employees. 4. There is no problem to construct space applying the traditional Korean house using interior products currently being sold in the domestic market. 5. Standardized mass production is essential to popularize the traditional Korean house style interior.