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영구자석 진동에 기인한 HEV용 구동모터 이상 전자기 소음의 실험적 규명
김명규(Myunggyu Kim),하재원(Jaewon Ha),김대운(Daewoon Kim),김삼균(SamKyun Kim),김연호(Yeonho Kim) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
This paper investigates the abnormal electromagnetic noise of HEV traction motor due to Vibration of Permanent Magnet. In the paper, we introduce the mechanical and electromagnetical cause of magnetic unbalance of the HEV tranction motor and analyze the frequency of abnormal electromagnetic noise due to magnetic unbalance. We determine the abnormal electromagnetic noise is caused by the vibration of permanent magnet. And we develop the novel magnet insert method of HEV traction motor and improve the abnormal electromagnetic noise of HEV traction motor.
NRL 사업의 예산배분을 위한 DEA/AHP 혼합 모형
남인석(InSuk Nam),유태우(TaiWoo You),하재원(Jaewon Ha),정병호(ByungHo Jeong) 대한산업공학회 2010 산업공학 Vol.23 No.2
This paper suggests a DEA/AHP hybrid model to deal with an allocation problem of research budget for the national research lab(NRL) program. The qualitative factors are appraised by AHP model and the quantitative factors are dealt with DEA model to evaluate the performance of research activities considering tangible and intangible factors. The proposed hybrid model is applied to get the importance weight of research areas for research budget allocation of NRL program.