Abstract: In order to achieve the higher velocity，reduce vibration，eliminate slipper wear and save costs，an electrodynamic suspension and electromagnetic propulsion system for high speed test tracks were discussed. The techniques for the design and analysis of an electodynamic suspension and electromagnetic propulsion were described. By using 3-D finite-element analysis，suspension and propulsion characteristics were predicted. The results show the force-weight ratio of system is 11 times higher than EMS system，the weight of propulsion on the sled accounted for 4.2% of the total weight. The high speed test track with electordynamic suspension and electromagnetic propulsion is superior to traditional high speed test track.

Key words: High speed test track；Electrodynamic suspension；Electromagnetic propulsion

摘要： 针对目前高速滑撬系统滑块磨损严重、撬体振动剧烈、测试成本高、实验周期长的问题，提出一种适用于高速滑撬平台的电动悬浮和电磁推进系统。采用数值计算方法建立系统的仿真模型，对系统的悬浮和推进特性进行分析。仿真分析结果表明，系统最大浮重比是电磁吸力型(EMS)悬浮系统的11倍，推进系统需要撬体携带的重量仅占整个撬体质量的4.2%，具有很高的有效载荷。文中所提出的系统较传统的采用滑块支撑、火箭发动机作为动力的高速滑撬系统具有明显优势。

关键词: 高速滑撬；电动悬浮；电磁推进