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김영기(Y.K. Kim),엄대식(D.S. Eom),김영란(Y.R. Kim),홍찬희(C.H. Hong),김영구(Y.G. Kim),목형수(H.S. Mok) 전력전자학회 2011 전력전자학술대회 논문집 Vol.2011 No.7
This paper developed 110㏄ class electric motorcycle using IPMSM. First, Tractive effort calculated by considering the driving environment of motorcycle. And accordingly the motor and inverter were designed and manufactured. It was mounted on motorcycles and test result was compared with the output power of motorcycle with an internal combustion engine.
김완두(W. D. Kim),김완수(W. S. Kim),우창수(C. S. Woo),정승일(S. I. Jung),김석원(S. W. Kim),김영구(Y. G. Kim) 한국철도학회 2001 한국철도학회 학술발표대회논문집 Vol.- No.-
A chevron rubber spring is used in primary suspension system for rail vehicle. The chevron spring has function which support the load carried and reduce vibration and noise in operation of rail vehicle. The computer simulation using the non-linear finite element analysis program MARC executed to predict and evaluate the load capacity and stiffness for the chevron spring. The appropriate shape and material properties are proposed to adjust the required characteristics of chevron spring in the three modes of flexibility. Also, several samples of chevron spring are manufactured and experimented. It is shown that the predicted values agree well the results obtained from experiments.