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中文摘要：
基于兰杰文一阶纵振设计了一种新型超声悬浮轴承和一种微扭矩测量系统，该系统可以减小输出轴上的摩擦，增加输出扭矩；搭建了实验平台，在超声悬浮轴承工作和未工作条件下进行对比实验，实验结果表明，该超声悬浮轴承在工作状态下可以将机械摩擦损耗减小80％左右。
英文摘要：
Based on Langevin-type first longitudinal vibration, a new type of ultrasonic levitation bearing is proposed, and a micro torque testing system which can reduce the friction is presented. An experimental platform was constructed, comparative experiments were made under the working and the non-working condition of the piezoelectric ultrasonic levitation bearing. The experiments testify that the ultrasonic levitation bearing can reduce 80 % of the friction loss of shaft under the working condition.
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