摘要
分析一种运动解耦的大变形柔性铰链机构的制造误差,通过建立主框架的矢量方程组模型分析制造误差对机构输出角的影响.计算机仿真结果表明,该机构中不同杆件的制造误差对输出误差影响有较大差异,杆件1、3的制造误差对结构运动精度影响较大,而且当输入角变化时杆件1、3的制造误差对输出角影响的非线性程度加强,而杆件6对机构输出精度的影响较小.从而确定出微步进工作台机构制造误差的分配原则.
The errors in manufacturing of a large-deflection flexible hinged mechanism with motion decoupiing were analyzed and the influence of these errors on the output angle of this mechanism was analyzed by means of setting up a vector equation system of the main frame. It was shown by computer simulation that there was a larger divergence of this influence between different rods in the mechanism. The influence of manufacturing errors L1 and L3 on the motion accuracy of the mechanism was greater. When the input angle was increased, non-linearity of the effect of manufacturing errors of rods L1 and L3 on the output angle was increased. The influence of manufacture error of L6 on the output accuracy of mechanism was less. Thus the allocation principle of manufacturing errors was determined for designing the micro stepping table.
出处
《兰州理工大学学报》
CAS
北大核心
2008年第4期40-42,共3页
Journal of Lanzhou University of Technology
基金
江苏省高校自然科学基金(06KJD460004)
关键词
微步进工作台
解耦
误差分析
micro stepping table
decoupling
error analysis
