Abstract：Research purposes: Air gap variations, vehicle and track dynamic response characters are analyzed and compared of different suspension mode on linear metro system.
Research methods: Vehicle/track coupling dynamics theory is applied and different model is built based on different suspension mode. Harmonic cosine forms of irregularities are introduced to local track.
Research results: The acceleration in different direction and wheel/track force has small differences under different suspension mode, but the law of air gap variations appear sharp different.
Research conclusions: Under bogie suspension, long-wave irregularity with 5.5 mm amplitude must be strictly controlled to avoid the scrape between LIM and reaction board. Under nose suspension, short-wave irregularity with large amplitude should be restricted to avoid large air gap that influences the efficiency of LIM.
魏庆朝,邓亚士,冯雅薇. 电机悬挂方式对LIM地铁系统动力特性的影响研究[J]. 铁道工程学报, 2007, 24(11): 59-64.
WEI Qing-chao, DENG Ya-shi，FENG Ya-wei. Study of Suspension Mode Influences on LIM Metro System Dynamic Characters. 铁道工程学报, 2007, 24(11): 59-64.
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2007, Vol. 24 
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