신경 회로망을 이용한 Buck Type콘버어터의 출력 전압 제어에 관한 연구

배상준,김동희,이달해 嶺南大學校 工業技術硏究所 1993 工業技術硏究所論文集 Vol.21 No.2

A novel Neural networks controller for Buck type DC-DC converter is presented and compared with the operation of sliding mode coupled several control strategies for the converter. The connection weights of neural network are trained by error back propagation algorithm and the trained neural network is applied to the converter control. In this paper, each quantity is normalized in order to reduce complexity of both theoretical analysis and design for the converter. The behavior of the control system that arises from the use of those methods is analyzed from the viewpoint of dynamic and steady state errors and Simulation results are presented.

오존 발생기용 전원장치 개발 및 특성에 관한 연구

김동희,이달해,성현직,오승훈,이봉섭,배상준 嶺南大學校 工業技術硏究所 1997 工業技術硏究所論文集 Vol.25 No.1

The power semiconductor switching devices(PSSD) continuously developed, Power Electronic Technology using PSSD is gradually extended. The high frequency inverter to generate the large power high frequency subject to power electronic technology pursuit various application. Also, in emboss with environmental destruction problem cause the atmosphere and the water pollution to growth of the commercial society, the research in favor of cleansing environmental a pollutant actively proceed. Cause of having a strong oxygenization in the physical world, the ozone has sterillization effect predominantly against virus, bacteria, etc and has application in decolorization, deodorization, food storage and air cleansing and has a merit that does not cause the secondary pollution by being restored to oxygen lastly. Therefore, This project describe study on the ozone generation power supply using the high frequency electric field method and the lamp type ozone generator using photochemistry, one of method of generate ozone.

신경회로망을 이용한 전력 변환장치의 제어

김동희,배상준,이달해 嶺南大學校 工業技術硏究所 1994 工業技術硏究所論文集 Vol.22 No.1

Some methods of appling to a control system and basic concept about the neural networks are presented, and some methods of training neural networks and back propagation algorithm, which updates weight for reduced output error, are described in this paper. Methods of constructing a control system of power conversion devices using feedforward of recurrent neural networks are presented through some examples. A behavior of controlled conversion devices with that control system is considered by the computer simulation.

경연 대회를 통한 초ㆍ중고생의 창의력 신장 효과에 관한 연구

이희복,육근철,류해일,김현섭,김희수,박달원,유병환,김선효,김여상,서광수,변두원,서명석,배성효,박종석,심규철,이성희 공주대학교 과학교육연구소 2001 과학교육연구 Vol.32 No.1

미래 사회를 대비하기 위한 개인의 개성을 존중과 창의적인 능력을 지닌 인간을 양성을 목적으로 충청남도 지역의 초 ㆍ 중고등학생들을 대상으로 한 창의력 경연대회가 공주대학교 과학교육연구소에서 개최되었다. 충청남도 초 ㆍ중 ㆍ 고등학생들을 대상으로 실시한 창의력 경연대회는 창조적 아이디어를 내어 스스로 문제를 해결해 나갈 수 있는 교육 프로그램을 제공하는 좋은 기회였음이 확인되었으나, 일부의 팀에서만 참신하고 재미있는 아이디어들이 제안되었다. 여학생의 참가자 수가 상당히 증가하였으며, 대체적으로 입상권의 학생들의 상당 부분이 여학생이라는 것이 특이할만하다. 학년이 올라감에 따라서 창의적인 아이디어를 내는 양이나 질에 있어서 뒤떨어지는 것으로 분석되었으며, 토론 학습의 적응력이 미흡하고 발표력 및 청취력에 있어서도 떨어지는 것으로 나타났다. 따라서 중 ㆍ고등학교의 학교교육에서도 학생들에게 프로젝트형 탐구학습 프로그램의 적용은 물론 토론식 수습을 통한 학생들의 사고의 전환의 기회를 제공해야 할 것으로 사료된다. The creativity competition was held to foster the creativity of elementary and secondary school students in the Institute of Science Education, Kongju national University. It was found that the creativity competition effected on the improvement of inventing creative ideas and problem solving activities. But, only some competitors participated in semifinal and final contests, presented original and interesting ideas. More female students participated in competition than last year. More female participants were awarded a prize than males. Totally, participants were defective in discussion and communication, and presentation and listening ideas. Increasing grades correlated inversely with creativity and originality. There is need of inquiry project teaming programs and presenting opportunities of conversion of thinking by discussing instructions in school

LCC형 고주파 공진 인버터의 특성 해석

김동희,이달해,배상준 嶺南大學校 工業技術硏究所 1995 工業技術硏究所論文集 Vol.23 No.2

This paper proposes LCC type high frequency resonant inverter to be used as a source of induction heating device or ultrasonic device and considers of operating characteristic for it. The inverter is operated safely over wide range load, because it has both paralel loaded capacitor and series loaded capacitor. Then, switching frequency of the inverter is controlled by feedback voltage and current in order to have constant output power even when load is varied.

21世紀 體育, Sports의 方向摸索을 위한 小考

李喆熙,裵元煥,李達源 啓明大學校 生活科學硏究所 1993 科學論集 Vol.19 No.-

This study was investigated for the purpose of conereting the arm of the physical education and acquiring intrinsic area of the physical education and contributing human culture in highly developed industrial society of the future. The conclusions were summerized as follows; In highly developed industrial society, sports activity for health and leisure by changing of physical education environment will be increased. The mass sports and sports science which social group carrys out positively will be accelerated. With recognition change for physical education, Eco-sports will be important sports. By developing sports scientification, Techno-sports will be more developed. The attitude and a view of value of the people for the sports will be more promoted. The conception of Pro-sports will be changed and the acceleration of political tool of physical education will be done in international sports. The role of physical education scientists who have the specialization and self-confidence of academy and deep experience will be large.

국내무연탄 연소에 따른 순환유동층내의 열전달 특성

선도원,배달희,조성호,박영성 大田大學校 産業技術硏究所 1997 산업기술연구소 論文集 Vol.8 No.1

순환유동층 시험연소로에서 국내무연탄의 연소에 따른 연소로 내벽의 열전달 특성을 고찰하였다. 연로소의 온도변화 및 층밀도의 변화에 따른 전열계수의 변화를 측정하였다. 한편 전열모델을 구성하고 그 계산치를 실험결과와 비교하였다. 또한 복사 전열에 대한 고찰을 통해 순환유동층 열전달에 미치는 복사의 영향을 추정하였다. Bed to wall heat transfer in a both scale circulating fluidized bed was studied. Domestic anthracite was burned to heat the combustor. Variation of heat transfer rate with combustor temperature, bed density was monitored. Test result was compared with a proposed heat transfer model and radiation effect in heat transfer was predicted

국내 창업보육센터의 운영시스템 현황 및 발전방안에 관한 연구

박상문,이재희,이달환,배종태 한국중소기업학회 2000 기업가정신과 벤처연구 Vol.3 No.1

본 연구는 현재 국내 창업보육센터의 운영시스템 현황 및 특징을 파악하고 효과적인 창업보육센터 운영을 위한 발전방안을 제시하고자 한다. 지역경제활성화, 고용창출 및 첨단기술기업의 육성을 위한 창업보육센터의 운영에 대한 전세계적인 관심이 증가하고 있으며 국내에서도 최근 산업구조조정, 벤처기업의 육성 등을 목표로 창업보육센터를 설립하여 운영하고 있다. 조사 결과 국내 창업보육센터는 첨단산업에 집중한 정부주도, 재정적 취약성, 창업보육센터의 전문인력의 부족 및 물리적 시설이나 설비에 집중된 서비스 등의 특성을 보이고 있다. 국내 창업보육센터가 초기단계 수준에 있지만 보다 효과적으로 운영되기 위해서는 더욱 특화된 목표설정과 다양한 입주기업 선정, 전문인력의 확보, 자금원천의 다양화 및 서비스 지원을 추진해야 할 것이다. This study explores the current status and characteristics of Business Incubators in Korea and suggests some directions for effective management of Business Incubators. Numerous countries promore Business Incubator programs to revitalize local economy, increase employment, and nurture high-tech industries. Recently, a number of Business Incubators have been established and operated with aims to adapt to changing environment and increase economic competitiveness in Korea. This study based on the survey shows that Business Incubators in Korea have some characteristics: government oriented programs, financial weakness, lack of specialists in the operation of Business Incubators, and limited services for tenant companies.

폐플라스틱 유동층 열분해 공정연구

선도원,조성호,배달희,박영성 大田大學校 環境問題硏究所 1996 환경문제연구소 논문집 Vol.1 No.-

Process characterization of waste plastics pyrolysis in a bench scale fluidized bed test unit was investigated. Feasibility of commercial scale process such as proper feeding system and reaction control ability were analysed and confirmed based on the reaction characteristics varying with the plaxtics and system assemblies. Eight pure or waste plastic samples were collected from the industrial waste plastics generation source in Korea. Selected samples were HDPE, LDPE autobovile interior, XLPE electric wire coat, synthetic rubber, EVA shoe sole, PS(monomer and styrofoam) and ABS. The pattern of decomposition reflected composition and molecular structure of plastics. Decomposition of polyolifin produced linear paraffinic and olefinic compounds. Recovery of styrene monomer and aromatic compounds were attained from the phrolysis of PS and ABS. However, secondary reaction was monitored was monitored even from the pyrolysis of aliphatic samples of XLPE and EVA.

THE OPERATION CHARACTERISTICS OF PILOT SCALE CIRCULATING FLUIDIZED DED BOILER FOR RDF

Dal-hee BAE,Dowon SHUN,Jaehyoun PARK 한국신재생에너지학회 2014 AFORE Vol.2014 No.-