Optimization design of deep-notch elliptical flexure hinges

LU Qian; HUANG Wei-qing; WANG Yin; SUN Meng-xin

doi:10.3788/OPE.20152301.0206

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Optimization design of deep-notch elliptical flexure hinges

更新时间：2020-08-13

- Optimization design of deep-notch elliptical flexure hinges
- Optics and Precision Engineering Vol. 23, Issue 1, Pages: 206-215(2015)
- 作者机构：
  
  南京航空航天大学机械结构力学及控制国家重点实验室,江苏南京,210016
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20152301.0206
  CLC： TH132
- Received：19 June 2014，
  
  Revised：21 August 2014，
  
  Published：25 January 2015
- 稿件说明：
移动端阅览
卢倩, 黄卫清, 王寅等. 深切口椭圆柔性铰链优化设计[J]. 光学精密工程, 2015,23(1): 206-215

LU Qian, HUANG Wei-qing, WANG Yin etc. Optimization design of deep-notch elliptical flexure hinges[J]. Editorial Office of Optics and Precision Engineering, 2015,23(1): 206-215
卢倩, 黄卫清, 王寅等. 深切口椭圆柔性铰链优化设计[J]. 光学精密工程, 2015,23(1): 206-215 DOI： 10.3788/OPE.20152301.0206.

LU Qian, HUANG Wei-qing, WANG Yin etc. Optimization design of deep-notch elliptical flexure hinges[J]. Editorial Office of Optics and Precision Engineering, 2015,23(1): 206-215 DOI： 10.3788/OPE.20152301.0206.

摘要

考虑深切口椭圆形柔性铰链比其他常用的柔性铰链更适用于具有大行程要求的柔性机构

本文对其进行了优化设计.建立了深切口椭圆形柔性铰链的刚度模型

探讨了结构参数对其转动刚度的影响.分析了深切口椭圆柔性铰链的柔度矩阵

利用Newton-cotes求积公式简化了柔度系数的计算

在此基础上构建了多目标加权优化模型

利用模糊优化设计方法对各结构参数进行了优化设计.优化结果表明:绕

轴旋转的角位移提高了16.72%;绕

轴旋转角位移下降了16.01%;沿

轴、

轴和

轴产生的线位移分别下降了10%、29.33%和51.84%.数据显示:经过优化的柔性铰链在所期望的

轴方向上的转动能力得到了提高

同时抑制了其他方向上的运动能力

从而提高了柔性铰链的整体运动精度和结构柔度

可用于高精密、大行程光波导封装定位平台.

Abstract

Deep-notch elliptical flexure hinges are more suitable for a flexible mechanism with large stroke requirements as compared with other common flexure hinges

so this paper optimizes their design. The stiffness model of deep-notch elliptical flexure hinges was established firstly

and the impact of structural parameters on the rotational stiffness was also discussed in detail. Then

the flexibility matrix was analyzed by using Newton-cotes quadrature formula to simplify the calculation of flexibility coefficients

and each structural parameter was optimized by fuzzy optimization method based on the multi-objective optimization model. The results of optimization show that the angular displacement rotated with the

axis is improved by 16.72%

while that rotated with the

axis is decreased by 16.01%

and the linear displacements along the axes

are decreased by 10%

29.33% and 51.84%

respectively. After optimization

the rotation capacity of

axis has been improved and the transmission capacities in other directions are both inhibited

so that the movement accuracy and structural flexibility are enhanced. The test results demonstrate that the optimized deep-notch elliptical flexure hinges meet the requirements of high-precision and large travel of waveguide package positioning platforms.

关键词

Keywords

references

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