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대용량 고전압 부하의 무효전력 및 고조파 보상을 위한 낮은 DC 전압을 갖는 새로운 능동 파워 필터
정구호(Gu H. Jung),조규형(Gyu H. Cho) 전력전자학회 1998 전력전자학술대회 논문집 Vol.- No.-
This paper presents a new active power filter with low DC voltage for compensating reactive power and harmonics of three -phase high power/voltage harmonic producing load. It has a structure of converter connected in series with power factor correction capacitor. Appropriate size and number of filter capacitor are determined by an equation and applied to simulation of 10kvar 6-pulse SCR rectifier.<br/>
정구인(Gu-in Jung),김지선(Ji-Sun Kim),허동훈(Dong-Hun Hur),유환동(Hwan-Dong Yu),임성환(Sung-Hwan Lim),최주현(Ju-Hyeon Choi),이정환(Jeong-Hwan Lee),엄광문(Gwang-Moon Eom),전재훈(Jae-Hoon Jun) 대한전기학회 2011 전기학회논문지 Vol.60 No.10
Measuring the movement of joint angle of human body is very important clinically. Human joint angle displacement can be used to evaluate the degree of disease and disability. Also, we can determine the rehabilitation process with angular information. Conventional methods for measuring angular displacement are many weakness. The purpose of this study is to overcome the limitations of existing equipments by using optical method. For this reason, optical sensor system was used to correlate detected light signal with joint angle. Experimental results of the applied joint model in this study showed that joint angular displacement can be measured by optical signals. The suggested method is simple, durable, small, lightweight, convenient, and cost effective.
정구인(Gu-In Jung),김지선(Ji-Sun Kim),이태희(Tae-Hee Lee),최주현(Ju-Hyeon Choi),오한별,김아희(A-Hee Kim),전재훈(Jae-Hoon Jun) 대한전기학회 2014 전기학회논문지 Vol.63 No.7
The measurement of joint angle is important to evaluate the patient’s disability. The modified fiber tip and light propagation of the developed fiber sensor were investigated to increase the range of angle detection. Different shapes of fiber tips were manufactured with a polishing machine to deliver light signal in various patterns. Output signals were analyzed to obtain joint angle change with inverse polynomial models. The measured joint angles were displayed with LabVIEW program and the reliability was tested by comparing with a commercial angle sensor. This method can be used in rehabilitation field to determine patient’s progress.
정구만 ( Gu-man Jung ) 산업진흥원 2017 산업진흥연구 Vol.2 No.2
본 연구는 현 품질명장들의 설문조사 분석과 독일의 마이스터제도, 일본 명공제도, 기능명장, 품질명장제도 고찰을 통하여 제도상 문제점을 도출하여, 품질명장제도 개선모형을 설정하였다. 첫째는 품질명장 선발분류 가이드 모형 설정하였으며, 둘째는 경험과 전문 기술이 이론과 접목을 위한 모형을 설정하였고, 셋째는 중소기업 경쟁력강화를 위한 품질명장 활용모형을 설정하였으며, 넷째는 향후 품질명장 되기 위한 기본적 모델을 제시하였다. 이러한 모델이 기대되는 효과로는 지식기반의 경제에서, 우수한 인재를 발굴과 육성·활용측면에서 품질명장은 각 분야에서 학문적 이론과 경험을 접목하여, 핵심적 전문기술과 지식, 최고의 기능· 우수한 관리능력 및 참다운 인성보유자로 변혁적인 리더이자 전문가로써, 성과 창출로 기업경쟁력 향상과 후배 지도육성, 그리고 협력업체 지도로 혁신활동의 선봉장이 될 것이며, 중소기업 경쟁력강화를 위해서는 품질명장 정년퇴직 이후에도 제도적 보완으로 인재가 활용되어 중소기업의 기술축척과 배양이 가능 하리라 본다. this study, the problem of the quality is analyzed by questionnaire analysis of the current quality managers, and the German meister system, the Japanese name deduction system, the functional manager, and the quality manager system. First, we set up a quality guide selection classification guide model. Secondly, we set up a model for combining experience and expertise with theory. Third, we set up a quality brand application model to enhance competitiveness of SMEs. Fourth, The basic model is presented. The expected effects of these models are that, in the knowledge-based economy, in terms of identifying, fostering, and utilizing superior talents, quality experts combine academic theories and experience in each field to provide core expertise and knowledge, As a transformative leader and expert, we will become a leader of innovation activities by enhancing corporate competitiveness, developing younger leaders, and cooperating with suppliers. In order to strengthen competitiveness of SMEs, It will be possible to scale and cultivate the technology of SMEs.