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Brake Torque Vectoring을 이용한 차량의 운전성 향상에 대한 연구
이종일(Jongil Lee),김인용(Inyong Kim),구형찬(Hyoungchan Koo),김형수(Hyoungsoo Kim),김영우(Youngwoo Kim),오승규(Seungkyu Oh),노지훈(Jihoon Roh),윤동필(Dongpil Yoon),이강원(Kangwon Lee) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
This paper presents a mathematical model of multi-dynamic vehicle model. A torque vectoring brake (TVB) system is proposed to improve the stability and the agility of vehicle. The algorithm of TVB system is proposed based upon a sliding model controller. The proposed algorithm optimizes control of wheel slip during the inside of vehicle wheel slip. ISO standard test procedure is used to evaluate the performance of TVB system. The TVB performance is numerically implemented using MATLAB and CarSim commercial software. The simulation results show the acceptable performance of TVB comparing without TVB. For conclusion, the TVB system is developed and evaluated to improve vehicle dynamic characteristics and handling performance. The TVB system shows the better handling performance and agility specially under-steer control situation.
박능후(Neung Hoo Park),최민정(Min Jeong Choi) 충남대학교 사회과학연구소 2014 사회과학연구 Vol.25 No.2
Considering the rapid increase of retirement of the middle aged workers since 2011 in Korea, this paper aims to analyse the multi-dimensionality and dynamics of social exclusion of middle aged householders using the pooling data of Korea Welfare Panel Study(KOWEPS, 2006-2012). We categorized the types of change in social exclusion states(dependent variable) into two groups; excluded-non excluded vs non excluded-excluded. The dimension of social exclusion was categorized into six sub-dimensions: finance, housing, employment, health, education and social participation. The determining variables are demographic factors(gender, age and educational attainment), family characteristics(residential area), and economical factors(work status, occupation, industry and size of firm). The results of statistical analysis indicated that work status, type of occupation and industry have strongest explanatory power for escape from exclusion. Also educational attainment was related with the change of social exclusion state. Conclusively, social exclusion is dynamic process its sub-dimensions are affecting each other in the middle aged householders. This result implies that unemployed middle aged householders are exposed to the overall social vulnerabilities and thus are easily trapped into the social disadvantage.