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자동차 속도감응형 LED 주행상태 안내 시스템의 주행상태 인지성에 대한 연구
양동희 ( Donghee Yang ),홍성인 ( Sungin Hong ),최병기 ( Byungky Choi ) 조선대학교 공학기술연구원 2017 공학기술논문지 Vol.10 No.2
Present automobile driving indicating system hasn`t provided variable driving infromation(the increase or decrease of the velocity, parking and backware drive etc.). In this study, we developed the driving state led guide system according to automobile velocity response and carried out the awareness test at various conditions(day and night, sex, ages and driving status). According to the results, awareness about the driving state led guide system was higher in 20 ages and woman group than other group. At night driving, awareness of this system was generally increased because the visual information was more important than day. Also, awareness was more increaed in case of decelerating driving than other driving status because danger recognition was higher than the other driving status and the dependent of this system was increased.
퍼지-다요소 결정기법에 의한 단조피스톤의 예비성형체 설계 연구
염성호(Sungho Yeom),남경오(Kyoungo Nam),홍성인(Sungin Hong) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
This paper introduces the technique for preform design method of the forged piston using fuzzy - TOPSIS (Technique for Order Preference by Similarity to Ideal Solution). The design parameter of forged piston that was described by cardinal number changed to fuzzy number. FEM analysis was archived for the preform shape to describe with fuzzy number. The result values of FEM analysis, ductile fracture value, load, effective strain rate and effective stress, was decided to the multi factor of fuzzy-TOPSIS. The result values of FEM analysis were calculated by computational procedure of fuzzy TOPSIS. And the preform shape was decided by TOPSIS calculation result. The preform shape was changed by given the weight value to important factor. The weight value with designer's interest was calculated by the analytic hierarchy process. The Fuzzy-TOPSIS method was effective decision techniques in the decision method of preform design.