引用本文:
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 55次   下载 46 本文二维码信息
码上扫一扫!
分享到: 微信 更多
基于CAD模型的碳纤维复合材料天线反射面精度测量
倪爱晶, 赵婕, 郭庆, 于望竹, 王凯
北京卫星制造厂, 北京 100094
摘要:
针对天线反射面研制过程中的精度测量,提出一种基于CAD模型的自动测量技术和反射面数据处理技术的精度测量方法。在测点均匀布局规划和工件与模型对齐的基础上,自动获取反射面的完整测量数据,利用最优化算法使实测数据和理论模型达到最佳匹配,实现反射面面形精度的准确评价并获得变换矩阵。最终通过偏差矢量图表达天线反射面的面形偏差趋势,并利用获得的变换矩阵修正加工基准,有效保证了反射面的成型精度和加工精度,工程应用表明该方法较好地满足了反射面制造过程中的测量需求。
关键词:  反射面  自动测量  最佳拟合  CAD模型
DOI:10.12044/j.issn.1007-2330.2018.05.013
分类号:TH164;V461
基金项目:
A Method for Carbon Fiber Reinforced Composite Reflector Precision Measurement Based on CAD Model
NI Aijing, ZHAO Jie, GUO Qing, YU Wangzhu, WANG Kai
Beijing Spacecraft, Beijing 100094
Abstract:
Aimed at the precision measurement during the manufacture process of antenna reflector, a measurement method based on automatic measurement technique using CAD model and data process technique was proposed. Through the planning of measuring points and aligning of workpiece with CAD model, the complete measuring data of reflector were acquired automatically. The optimum matching between the measuring data and the CAD model was achieved by the optimization algorithm, then the surface accuracy of the reflector was precisely evaluated. The transformation matrix was also obtained. Finally, the surface deviation trend of the antenna reflector was expressed by the deviation vector graph, and the datum was corrected by using the transformation matrix, which ensured the surface accuracy and machining accuracy of reflector. The practical application has indicated that the method could meet the measurement requirements of reflector.
Key words:  Reflector  Auto-inspecting  Best-fit  CAD model