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介绍了日本各民营铁路公司最近开发的高速动车的研制成果及新技术应用现状。其中包括：提高新干线动车走行装置的性能，感应电动机驱动系统的实用化，提高新干线动车的乘坐舒适性，新的车体倾斜装置、径向转向架的实用化，新干线和既有线直通车用转向架的开发，极灵敏的空转再粘着制动控制技术的开发，直接驱动车轮的牵引电动机的开发，转向架构架的新的强度评价方法等。
This paper introduces the research achievements and new technologies applied in the recent development of high-speed motor cars by various private railways in Japan. These include: improving the performance of motor vehicles running the Shinkansen, practical application of the induction motor drive system, improving the ride comfort of the motor vehicles in the Shinkansen, the new body tilting device, the practical application of the radial bogie, the direct route of the Shinkansen and existing lines The development of automotive bogies, the development of extremely sensitive idling and re-adhesion braking control technology, the development of direct-drive traction motors, and the new strength evaluation of bogie frames.