Wang Rongqi, Zhou Xiaoqin, Zhu Zhiwei, Liu Qiang
School of Mechanical Science and Engineering, Jilin University, Changchun 130022, China.
Rev Sci Instrum. 2015 Aug;86(8):085003. doi: 10.1063/1.4928593.
A novel type of hybrid non-symmetric flexure hinges (NSFHs) is developed for higher motion precision in this paper, then the finite beam based matrix modeling (FBMM) method is employed to describe elastic deformation behaviors, model compliance matrix, and define non-dimensional precision factors of the hybrid NSFHs. Influences of the dimensional parameters on the dominant compliances and motion accuracies of the NSFHs are analytically investigated based on the FBMM models, while an asymmetry ratio is introduced and its influences on performances of the NSFHs are well revealed. Moreover, making comparisons of the main performances between the proposed NSFHs and symmetric flexure hinges, the obtained results indicate that the hybrid NSFHs can greatly improve the motion accuracy and suppress the adverse inherent motions. Finally, performances of the NSFHs and modeling accuracies are investigated by experimental tests, and making comparison with other flexure hinges.
本文开发了一种新型混合非对称柔性铰链（NSFHs）以实现更高的运动精度，然后采用基于有限梁的矩阵建模（FBMM）方法来描述混合NSFHs的弹性变形行为、模型柔度矩阵并定义无量纲精度因子。基于FBMM模型，分析研究了尺寸参数对NSFHs主要柔度和运动精度的影响，同时引入了不对称比并揭示了其对NSFHs性能的影响。此外，通过比较所提出的NSFHs与对称柔性铰链的主要性能，结果表明混合NSFHs可以大大提高运动精度并抑制不利的固有运动。最后，通过实验测试研究了NSFHs的性能和建模精度，并与其他柔性铰链进行了比较。
