北京航空航天大学学报 ›› 2018, Vol. 44 ›› Issue (9): 1982-1990.doi: 10.13700/j.bh.1001-5965.2017.0706

• 论文 • 上一篇    下一篇

基于柔性铰链的二自由度微动平台分析及优化

周睿1,2, 周辉1,2, 桂和利1,3, 董虎1,2, 曹毅1,2   

  1. 1. 江南大学 机械工程学院, 无锡 214122;
    2. 江苏省食品先进制造装备技术重点实验室, 无锡 214122;
    3. 无锡科技职业学院, 无锡 214151
  • 收稿日期:2017-11-13 出版日期:2018-09-20 发布日期:2018-09-21
  • 通讯作者: 曹毅.E-mail:caoyi@jiangnan.edu.cn E-mail:caoyi@jiangnan.edu.cn
  • 作者简介:周睿 女,硕士研究生。主要研究方向:柔性铰链及其应用;曹毅 男,博士,教授,硕士生导师。主要研究方向:机器人机构学及机器人技术。
  • 基金资助:
    国家自然科学基金(50905075);江苏省“六大人才高峰”计划(ZBZZ-012);江苏省普通高校专业学位研究生实践创新计划(SJZZ16-0212)

Analysis and optimization of 2-DOF micro-positioning stage based on flexible hinges

ZHOU Rui1,2, ZHOU Hui1,2, GUI Heli1,3, DONG Hu1,2, CAO Yi1,2   

  1. 1. School of Mechanical Engineering, Jiangnan University, Wuxi 214122;
    2. Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment and Technology, Wuxi 214122, China;
    3. Wuxi Vocational College of Science and Technology, Wuxi 214151, China
  • Received:2017-11-13 Online:2018-09-20 Published:2018-09-21
  • Supported by:
    National Natural Science Foundation of China (50905075); the Six Talent Peaks Project in Jiangsu Province (ZBZZ-012); the Research and the Innovation Project for College Graduates of Jiangsu Province (SJZZ16-0212)

摘要: 为改进微动平台的动态特性,提出了一种解耦的基于柔性铰链的二自由度微动平台。首先,综合考虑倒圆角直梁型柔性铰链与微动平台的结构特点,设计了一种新型的二自由度微动平台;其次,推导了该微动平台的等效刚度计算模型,并通过理论计算与有限元仿真分析对比,验证了理论模型的正确性;同时探讨了各结构参数对微动平台等效刚度的影响,并进行了灵敏度对比和分析;再次,以提高二自由度微动平台的等效刚度为目标,建立了其优化设计模型,并采用自适应粒子群优化算法对该微动平台的主要结构参数进行了优化。最后,理论计算了该微动平台的固有频率,并通过有限元仿真分析验证了其正确性。上述分析证明了该机构的可行性及有效性。

关键词: 二自由度微动平台, 倒圆角直梁型柔性铰链, 有限元分析, 参数优化, 固有频率

Abstract: In order to improve the dynamic characteristics of the micro-positioning stage, a decoupled two-degree-of-freedom (2-DOF) parallel flexure-hinge micro-positioning stage is proposed. First, a new type of 2-DOF micro-positioning stage is designed based on the structure characteristics of the corner-filleted flexure hinge and micro-positioning stage. Second, the equivalent stiffness model of the micro-positioning stage is deduced, and the correctness of the theoretical model is verified by comparing the theoretical results with the finite element simulation. And at the same time, the influence of different structural parameters on micro-positioning stage is discussed, and the sensitivity comparison and analysis are conducted. Then, to improve the 2-DOF micro-positioning platform equivalent stiffness as the goal, the optimization model is established, and the adaptive particle swarm optimization algorithm is used to optimize the main structure parameters of the micro-positioning stage. Finally, the natural frequency of the stage is calculated, and its correctness is verified by finite element simulation. The above analysis proves the feasibility and effectiveness of the mechanism.

Key words: 2-DOF micro-positioning stage, corner-filleted flexure hinge, finite element analysis, parameter optimization, natural frequency

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