윤축 모델을 이용한 독립 구동 차륜 모델 적용에 관한 연구

초록

Recently, the interest on a TRAM to be high for convenience and environmental reason. The latest TRAM has a low floor structure to support convenience for the mobility handicapped. For this reason, generally the bogies with independently rotating wheels (IRWs) are adopted in this TRAM. The bogie with IRW has no hunting motion because it does not have a self centering force, and has an excellent curving performance due to independently rotate left and right wheel. However it has a tendency to lean on one side of rail. Wear,noise and derailment problems could be occured by this tendency. This paper escribes the dynamic behaviors of IRWs and rigid wheelset, and the advantages of IRWs are described. Three DOF numerical dynamic model of IRWs adding new DOF of velocity difference of left and right wheels on two DOF numerical model of conventional rigid wheelset is developed. Dynamic analysis are accomplished using Matlab/Simulink with this numerical model. The difference dynamic characteristics of IRWs and rigid wheelset, and the strength of IRWs are reported.