실험계획법을 이용한 고속저상대차 최적설계에 관한 연구

송종원(Jongwon Song),이호용(Hoyong Lee),정충민(Choongmin Jeong),이승찬(Seungchan Lee),백우경(wookyung Baek),송아영(AhYoung Song),서명원(Myungwon Suh) 한국자동차공학회 2012 한국자동차공학회 학술대회 및 전시회 Vol.2012 No.11

Lower Floor Tram(LFT) is a innovative transport system which would complement the environmental consideration, such as reducing emission, and economic aspect, such as operating and maintenance costs retrenchment. In this reasons, introduction of LFT is in the interest of America, Europe, Japan and so on. In Korea, it is required for construction LFT system to ease traffic congestion and provide convenience for transportation vulnerable. In order to this, the advanced technology about tram should be developed and the safety and efficiency should be optimized. In this paper, the structure modeling and dynamic analysis of the LFT is performed, and the performance and riding comfort is evaluated. Then the design variables were optimized by DOE(Design of Experiments) and ANOM(Analysis of Mean).

다목적함수 최적화를 이용한 PTL 시스템의 힌지 포인트 설계에 관한 연구

송종원(Jongwon Song),정충민(Choongmin Jeong),정병대(Byeongdae Jeong),송아영(AhYeong Song),윤근하(Gunha Yoon),서명원(Myungwon Suh) 한국자동차공학회 2012 한국자동차공학회 부문종합 학술대회 Vol.2012 No.5

A smart vehicle represents an ASV(advanced safety vehicle) which can supplement limitations on sight and perception of driver and passenger with a basis of Active Vehicle Control Technology. Thus, it is necessary to develop an innovative technology which is able to increase the safety and convenience of existing vehicles. The thesis is a study to design PTL(Power Trunk Lid) System by Multi-Objective Optimization. It is analyzed by Taguchi design of experiment with the table of orthogonal arrays, and the optimum design point is chosen on the base of the aforementioned analysis which applies Multi-Objective Optimization. PTL System is very important in terms of accepting demands of customers. However, it is currently dependent on the technology of advanced foreign enterprises. PTL System design can apply to the outcome. Furthermore, the satisfaction with costs and customers’ demands and the decrease of costs can be expected as well.

후방추돌평가 시험을 위한 가상환경 시나리오 개발연구

백우경,김배영,김시우,정충민,송종원,서명원,Baik, Wookyung,Kim, Baeyoung,Kim, Siwoo,Jung, Choongmin,Song, Jongwon,Suh, Myungwon 한국자동차안전학회 2011 자동차안전학회지 Vol.3 No.2

Vehicle safety device such as active headrest and rear detection system has been developing as people are interested about rear end collision more than head on or than front. However, there is no any standard or criterion in order to evaluate vehicle safety device for rear end collision. Also there is no test protocol about rear end collision in vehicle experiment. Therefore, this research developed scenario for experiment about rear end collision in vehicle experiment. Also this research evaluated dangerousness about vehicle test and fitness about re-enacting rear end collision using scenario developed using commercial software (PC-Crash) which can re-enact vehicle collision in virtual vehicle experiment. Scenario developed according to statistics from National Highway Traffic Safety Administration and German In-Depth Accident Study. Scenario has twelve cases which composed of Re-LVS (Rear end Leading Vehicle Stop), Re-LVM (Rear end Lead Vehicle Moving) and scenario for evaluation about malfunction of active headrest.

Holland진로탐색프로그램이 학습부진아 진로장애 감소에 미치는 효과

공인규 ( Ingyu Kong ),송종원 ( Jongwon Song ) 한국심리유형학회 2017 심리유형과 인간발달 Vol.18 No.1

본 연구의 목적은 Holland진로탐색프로그램이 고등학교 학습부진아의 진로장애 감소에 미치는 효과를 알아보는 것이다. 이를 수행하기 위해 부산광역시에 소재한 Y 일반계 고등학교 1학년 실험집단 2학급과 통제집단 2학급에서 최종적으로 학습부진아 50명으로 선별하여 실헙집단에 8주 동안 총 16회기에 걸쳐 본 연구자의 전문가의 도움을 받아 제작한 자작프로그램인 Holland진로탐색프로그램을 실시하였다. 본 연구의 결과는 다음과 같다. 첫째, Holland진로탐색프로그램이 학습부진아의 진로장애 요인 중에서 자신감부족을 제외하고, 학습부진, 진로비합리적신념, 의사결정의 어려움에 유의미한 효과가 있었다. 둘째, 자신감부족에서는 개체 간 효과검증에서는 유의미한 차이가 있는 것으로 나타났지만, 검사시기와 집단별 상호작용효과로는 유의미한 효과가 없었다. 이는 학업성적이 낮아 자신감을 회복하는데 많은 시간을 소요됨을 의미한다. 셋째, 학습부진아들은 입시여건과 성적 및 공부에 대한 고민과 부담이 이들에게 심각한 장애로 지각되고 있어 우리나라의 입시현실을 잘 반영하고 있다. 바람직한 진로선택은 학업 성적뿐만 아니라 Holland의 직업적성격이나 흥미가 더 중요하다는 사실에 입각하여 학습부진아들의 진로지도를 더욱 강화해야 할 것이다. 따라서 학교현장에서 진로에 대한 장애요인들을 명확하게 확인함으로써 진로발달을 저해하는 요소들을 제거하거나 극복하도록 도움으로써 학교교육이 즐겁고 흥미롭게 될 것이며 학습부진도 극복될 것이다. The purpose of this study was to investigate the effects of Holland`s Career Exploration Program on the career barrier reduction of high school underachievers. The subjects were students of first grade in Y General high school, which is located in Busan, and 50 underachievers were randomly assigned into two experimental groups and two control groups. The experimental groups took Holland`s Career Exploration Program designed by the researcher (with the assistance of the expert) 16 times for 8 weeks. The results were as follows: First, Holland`s Career Exploration Program was significantly effective to increase positive responses of all Holland test items of underachievers. Holland`s Career Exploration Program was significantly effective to decrease all the areas of underachievers` career barriers except Lack of confidences: Learning inactivity, Career-irrational belief and Decision making difficulties. Second, The program showed meaningful differences for factor of Lack of confidences in effectiveness verification between entities, but didn`t make a significant difference in terms of its testing time and interactional effect by groups. This indicates that underachievers spend a great deal of time recovering their self-confidence due to their low academic performances. Third, It seems that Korea`s education system that mainly focuses on college entrance lead to great pressure for underachievers, which is a major cause of career barriers for them. Therefore, we should develop career guidance for underachievers in terms of one`s vocational aptitudes or interests. In conclusion, Holland`s Career Exploration Program is effective to overcome or to get ride of the factors hindering career development by clarifying the factors of career barrier in school. It also will pleasant, interest and overcome underachiever in school education.

차량의 후방추돌시험을 위한 시나리오 및 가상환경평가 개발연구

백우경(Wookyung Baik),김배영(Baeyoung kim),김시우(Siwoo kim),정충민(Choongmin Jung),송종원(Jongwon Song),서명원(Myungwon Suh) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11

Vehicle safety device such as active headrest and rear detection system has been developing as people are interested about rear end collision more than before. However, there is not any standard or criterion in order to evaluate vehicle safety device for rear end collision. Also there is not test protocol about rear end collision in vehicle experiment. Therefore, this research developed scenario for experiment about rear end collision in vehicle experiment. Also this research evaluated dangerousness about vehicle test and fitness about re-enacting rear end collision using scenario developed using commercial software (PC-Crash) which can re-enact vehicle collision in virtual vehicle experiment. Scenario developed according to statistics from National Highway Traffic safety Administration and German In-Depth Accident Study. Scenario has twelve cases which composed of Re-LVS (Rear end Leading Vehicle Stop), Re-LVM (Rear end Lead Vehicle Moving) and scenario for evaluation about malfunction of active headrest.

실험계획법을 이용한 PTL시스템의 힌지 포인트 설계변수의 민감도 분석에 관한 연구

정충민(Choongmin Jeong),김배영(Baeyoung Kim),정병대(Byeongdae Jeong),박경태(Gyeongtae Park),허하영(Hayoung Heo),송종원(Jongwon Song),윤근하(Gunha Yoon),서명원(Myungwon Suh) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5

Recently, vehicle part industry is now face with the task of satisfaction customer’s needs and cost reduction. Accordingly, vehicle part industry needs advanced techniques. This paper is the study about sensitivity analysis of design variable of PTL(Power Trunk Lid) hinge point. It is precedent study of optimum design of PTL hinge point. In this study, we analyze sensitivity of each design variable, and ranked it. As a result, we could find appropriate design variable of PTL system. PTL system is very important to accommodate customer’s needs, but we have to depend on foreign affiliated now. This result can be applied to design of PTL system, and we expect reduction of cost and satisfaction of customer’s demands.