Designing Micro-displacement Amplifier for Giant Magnetostrictive Actuator
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摘要: 设计了一种基于柔性铰链的单级对称式微位移放大机构,用于对超磁致伸缩驱动器的微位移输出进行放大。对放大机构的结构形式、结构几何参数、刚度特性进行了分析,研究了提高放大效率的方法,分析了放大机构静态位移输出特性,计算了放大机构的刚度。使用有限元方法进行了放大机构性能仿真,并对放大机构静态位移输出特性、刚度特性进行了实验验证。实验结果表明,本文设计的微位移放大机构位移损失小,负载能力较强,输出效率较高。Abstract: A one-stage symmetrical micro-displacement amplifier that uses flexure hinges is designed to amplify the micro-displacement output of a giant magnetostrictive actuator. Its structural form, geometrical parameters and ri-gidity are analyzed to improve its micro-displacement amplification efficiency. We also do the analysis of its static displacement output characteristics and calculate its stiffness. The finite element method is used to simulate its per-formance, and experiments are done to verify its static displacement output and rigidity. The experimental results show that the micro-displacement amplifier we designed has small micro-displacement loss and good micro-displace-ment amplification capability and efficiency.
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