片状精密柔性铰链的转动刚度测量
2019-08-30
作者：贾明昌1，陈青山1，高宏1，魏元2
单位：1北京信息科技大学；2北京航天自动控制研究所
摘要：为了解决薄片类复杂结构柔性铰链转动刚度精密测量问题，研究了一种基于力传感器和自准直仪的测量方法。采用ANSYS有限元软件对六种不同厚度的柔性铰链进行数值分析，并搭建试验系统进行实际测量。结果表明，计算结果与测量结果基本吻合，多次重复测量的最大标准差为1.6480(N·m/rad)。该方法一致性好、测量效率高，为薄片精密机械零件转动刚度测量与验收提供了一种有效方法。
关键词：柔性铰链；刚度测量；有限元分析
中图分类号：TG806；TH741文献标志码：ADOI：10.3969/j.issn.1000-7008.2019.09.025
Rotational Stiffness Measuring of Flakelike Precision Flexible Hinge
Jia Mingchang，Chen Qingshan，Gao Hong，Wei Yuan
Abstract:In order to solve the problem of precise measurement of rotational stiffness of flexible hinges with complex sheet structures，a measurement method is studied based on force sensor and autocollimator.By using ANSYS finite element software，six flexure hinges with different thickness are numerically analyzed，and an experimental system is built for actual measurement.The measurement results show that the calculation results are basically consistence with the measurement results.The maximum standard deviation of repeated measurements is 1.6480(N·m/rad)，and this method has good consistency and high measurement efficiency.An effective method for the measurement and acceptance of rotational stiffness of thinsection precision mechanical parts is provided.
Keywords:flexible hinge；stiffness measurement；finite element analysis