모바일 기기 환경의 인터렉티브 모션 기반 콘텐츠 개발 도구와 DEVS 모델링

주승환,최요한,임용수,서희석,Ju, Seunghwan,Choi, Yohan,Lim, Yongsoo,Seo, Heesuk 디지털산업정보학회 2015 디지털산업정보학회논문지 Vol.11 No.2

Interactive media is a method of communication in which the output from the media comes from the input of the users. The interactive media lets the user go back with the media. Interactive media works with the user's participation. The media still has the same purpose but the user's input adds the interaction and brings interesting features to the system for a better enjoyment. We need a digital content using a dynamic motion and gesture of the mobile device. We made an authoring tool for content producers to easily create interactive content. We have tried to take advantage of the interaction by using a touch screen and a gravity sensor of the mobile device. This interaction may lead to allow the user to participate in the content, it can be used as a key device to assist in engagement. Furthermore, our authoring tool can be applied to various fields of publishing content.

유압 부품과 시스템 설계를 위한 해석 모델 개발

윤영환(Younghwan Yoon),장주섭(Joosub Jang),임용수(Yongsoo Lim),최주용(Ju Yong Choi) 한국자동차공학회 2011 한국자동차공학회 지부 학술대회 논문집 Vol.2011 No.10-2

Performances and characteristics of SimulationX and AMESim software are introduced concisely. One-dimensional simulation software similar to each other including a hydraulic system and evaluate the characteristics of the software in the hydraulic domain. SimulationX and AMESim models are equally easy to build. In order to provide theoretical analysis for the flow control valve and hydraulic power steering system, the simulation model based on SimulationX and AMESim is developed in the paper. In this study, hydraulic power steering system analysis model which includes hydraulics and mechanical sub-systems was developed using commercial software. SimulationX and AMESim in order to predict characteristics for various design parameter. SimulationX high potential compared to AMESim is due to mainly to the exactly solving in continuity and orifice equation. SimulationX is strongly recommended for hydraulic componented and system design and each powertrain element has to be brought additionally

Series HEV Bus에서의 발전 시스템 최적화에 관한 연구

정대봉(Daebong Jung),민경덕(Kyoungdoug Min),조용래,임용수(Yongsoo Lim) 대한기계학회 2010 대한기계학회 춘추학술대회 Vol.2010 No.11

For improving fuel economy and emissions, many studies of HEV have been conducted. However, most of studies of HEV are concentrated on parallel or power split type HEV. It should be noted that series type HEV has some advantages comparing with that of parallel or power split type. One is that the engine is operated in high efficiency area since the engine and drive shaft are decoupled. Nevertheless of that advantages, optimization about powertrain system of series HEV was not considered precisely. So, in this study, optimization of generation system of series HEV was conducted based on series HEV bus. The main objective is to simulate and compare the fuel economies of conventional generation system and system which is considering about engine and generator simultaneously. The simulation algorithm used in this study is based on the optimal control theory, Dynamic Programming. Optimized generation system shows improved fuel economy about 2% comparing with non optimized generation system.

디젤하이브리드 버스의 개발과 연비 및 배출가스 측정

김용래(Yongrae Kim),이용규(Yonggyu Lee),최교남(Kyonam Choi),정동수(Dongsoo Jeong),임용수(Yongsoo Lim),김기은(Gieun Kim) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11

Hybrid-powered vehicles offer an advantage of superior fuel economy through use of regenerative braking and lowered transient emissions by reducing the operating portion of the engine to follow load as closely as in a conventional bus. A diesel hybrid bus was designed and a proto-type was developed in this study. It has a parallel-type hybrid powertrain system and uses a 5.9-liter diesel engine which satisfy Euro-5 emission standard. And 44kW-electric motor, AMT(automated manual transmission) and Li-ion type batteries were applied to this hybrid bus. Total 8 diesel hybrid buses are test-running at 6 cities and the driving performances are being monitored in terms of fuel efficiency, emission and convenience. This study presents the performance and major component features of diesel hybrid powertrain systems. Real road test result in Busan city showed a benefit of fuel economy about 36% by comparing to a conventional diesel-powered bus. Chassis dynamometer tests were also carried out and diesel hybrid bus showed 42% ~ 54% higher fuel efficiency and low emission levels than diesel bus.

직렬형 하이브리드 전기버스에서의 발전 시스템 최적화에 관한 연구

정대봉(Daebong Jung),민경덕(Kyoungdoug Min),조용래(Yongrae Jo),임용수(Yongsoo Lim) 대한기계학회 2011 大韓機械學會論文集B Vol.35 No.8

차량의 연비를 향상시키고 배기가스를 저감하기 위하여 하이브리드 자동차에 대한 많은 연구가 진행되고 있다. 하지만 이런 연구들은 병렬형이나 동력분기식 하이브리드 자동차에 집중되어 있다. 상대적으로 직렬형 하이브리드 자동차에 대한 연구는 부족한 실정이다. 직렬형 하이브리드 자동차의 경우 엔진이 차축과 분리되어 있으므로 엔진을 최적의 효율 지점에서 작동 시킬 수 있는 장점이 있다. 이런 장점을 최대한으로 이용하기 위하여 발전 시스템을 최적화 하는 연구가 필수적이다. 따라서 본 연구에서는 엔진을 Optimal Operating Line 상에서 작동시키면서 발전기 또한 최적 효율 지점에서 사용할 수 있는 최적화 방법을 제안하였다. 또한 기존의 발전시스템을 갖는 직렬형 하이브리드 버스와 최적화 된 발전 시스템을 갖는 직렬형 하이브리드 버스의 연비를 시뮬레이션을 이용하여 비교, 연비 향상도를 평가하였다. In order to improve fuel economy and emissions, many studies of HEV have been conducted. However, most of these studies concentrate on parallel or power-split HEVs. Series-type HEVs have some advantages over parallel and power-split HEVs. One is that the engine is operated at high efficiency since the engine and the driveshaft are decoupled. Nevertheless, the optimization of the powertrain system of series HEV has not been specifically addressed. We conduct an optimization of the generation system of a series HEV based on the series HEV bus. The main objectives are to simulate the system and to compare the fuel economies of conventional and optimized generation systems.

소나돔 충, 배수 밸브의 상태에 따른 함정용 소나돔 윈도우의 구조안정도 변화

한형석(HyungSuk Han),이경현(KyungHyun Lee),박성호(SeongHo Park),임용수(YongSoo Lim) 한국마린엔지니어링학회 2014 한국마린엔지니어링학회지 Vol.38 No.7

HILS 기반 Series HEV 버스 주행 전략 개발에 대한 연구

정대봉(Daebong Jung),김민재(Minjae Kim),강형묵(Hyungmook Kang),민경덕(Kyoungdoug Min),조용래(Yongrae Cho),임용수(Yongsoo Lim) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11

In recent days, the study on hybridization of the heavy-duty are going on, actively. Especially, the improvement of fuel economy can be maximized in the intra-city bus since it drives the fixed route. For developing the hybrid electric intra-city bus, optimized control strategy which is possible to be applied with real vehicle is necessary. If the real-time control strategy is developed based on the HILS, it is possible to verify the real-time ability and fail-safety function which has the vehicle stay in safe state when the functional errors are occurred. In this study, the HILS system of series hybrid electric intra-city bus is developed to verify the real time control strategy and the fail-safety functions. The real time vehicle dynamics model and powertrain model are developed based on the AMESim and the interface model for communication between the HILS and the RCP is developed based on the Simulink. The control strategy and fail-safety functions are implemented by ASCET in ES1000 that is RCP made by ETAS. The main objective of the paper is to build the HILS system for verifying the control strategy (rulebased control) which is implemented to reflect the Dynamic Programming results and fail-safety functions.

교육개혁안에 따른 진로교육 정책의 실천 전략과 방향

임용수 韓國進路敎育學會 1996 진로교육연구 Vol.5 No.-

Recently Korean government has launched forth the educational reform, which aimed at establishing the new education system and the new vocational education system for the actualization of life-long learning society. This paper was an attempt to explore and propose the strategies and directions for the implementation of career education policies in relation to the educational reform. Firstly, the nature of the educational reform was analyzed in order to make clear the reform-aimed educational policies. Secondly, the relationship of the new education system and the new vocational education system to career education was investigated to formalize career education policies in the educational reform. Thirdly, the strategies of career education policies in the educational reform were examined in terms of the strategy-forming process, i.e., the process of selection, calculation, implementation, and evaluation, and of the three types of reform strategy including power, facilitation, and self-regulation. Lastly, the directions were detailed and suggested in order to implement career education policies in the educational reform. They were listed as follows: the activation of career education activities; the establishment of career information system; the development and application of career education program; the introduction of career decision-making services system; the in-service education of teachers for career guidance activities; the training of career guidance teachers; the school organization for career education; and the legal and administrative support system for the enhancement of career education conditions.