摘要
为了更好的对光电经纬仪进行室内检测,提出了一种新型光学动态靶标,并对其优点和结构进行分析。基于材料力学原理建立靶标三维实体造型,以有限元分析软件NXNastran为辅助工具,对新型动态靶标的结构刚度进行分析,得出各个部件在靶标工作过程中的变形量,并计算靶标整体精度。结果表明,新型靶标结构形式合理、刚度良好,其俯仰角误差3.18″、方位角误差2.98″,能够初步满足光电经纬仪动态测角性能检测的需要。
A novel optical dynamic target is devised to satisfy the need of indoor examination of photoelectric theodolite, and its merits and structure are also discussed. Three-dimensional entity model of novel target based on material mechanics is built on the platform of UG and the finite element model is built by the software named NX Nastran. According to the finite element stiffness analysis, the target＇ s deformation figures are acquired and the accuracy of the whole target can be computed. The experimental result shows the novel optical dvnanfic target has reasonable structure and good stiffness. In addition,the target＇ s error of elevation is 3.18″,and error of azimuth angle is 2.98″. It can measure dynamic movement performance accurately.
出处
《计算机工程与应用》
CSCD
北大核心
2008年第14期100-102,121,共4页
Computer Engineering and Applications
关键词
动态靶标
检测
有限元
刚度
dynamic target
measure
finite element
stiffness
