中国科学院新疆天文台机构知识库

本发明公开了一种面向赋形面的大型抛物面天线主动面板调整量的快速确定方法，包括确定天线结构模型和促动器支撑节点；确定大型抛物面天线的两种工作模式下的整体反射面面型，确定赋形面的拟合方程；提取反射面所有主动面板的节点信息；计算与赋形面拟合均方根误差最小的目标曲面；确定面板与目标曲面的对应节点，计算促动器调整量；计算调整后整体反射面的所有节点的轴向误差；利用机电耦合模型计算天线增益，判断天线增益是否满足要求，输出最佳促动器调整量。本发明能直接准确地计算天线主动面板促动器的最佳调整量，使调整后形成的天线整体反射面更加逼近赋形面，能明显提高天线电性能，实现大型抛物面天线两种工作模式下的面型精准转换功能。

The invention discloses a shaped surface-oriented quick determination method for adjustment quantity of an active panel of a large parabolic antenna. The method comprises the steps of determining an antenna structure model and an actuator supporting node; determining an overall reflection surface shape of the large parabolic antenna under two working modes, and determining a fitting equation of a shaped surface; extracting node information of the active panel on the refection surface; calculating a target curved surface with minimum fitting root mean square error with the shaped surface; determining corresponding nodes of the panel and the target curved surface, and calculating an actuator adjustment quantity; calculating axial errors of all nodes of the adjusted overall reflection surface; calculating an antenna gain using an electromechanical coupling, judging whether the antenna gain meets the requirement, and outputting an optimal actuator adjustment quantity. By adopting the method, the optimal adjustment quantity of the active panel actuator of the antenna can be directly and accurately adjusted, so that the adjusted overall reflection surface of the antenna is closer to the shaped surface, the electric performance of the antenna can be obviously improved, and an accurate surface shape conversion function of the large parabolic antenna under two working modes is realized.