星载阵列天线型面优化调节方法研究  

Optimal Adjustment Method for Satellite Array Antennas

作　　者：陈夜 彭海阔[1] 李奇[1] 张如变 王萌[1] CHEN Ye;PENG Haikuo;LI Qi;ZHANG Rubian;WANG Meng(Shanghai Institute of Satellite Engineering,Shanghai 201109,China)

机构地区：[1]上海卫星工程研究所,上海201109

出　　处：《空间控制技术与应用》2022年第4期96-103,共8页Aerospace Control and Application

基　　金：国家重点研发计划资助(2017YFF0107306)。

摘　　要：星载天线的型面精度是保证其工作性能的关键因素.随着天线尺寸的增大,传统的型面精度被动控制方法已难以满足高精度、高分辨率对地观测卫星的需求.本文提出了一种天线型面优化调节方案,在天线背面布置若干作动器作为调节机构,采用优化调节算法分配作动器的位移量,以实现最优的型面精度调节.通过建立一个由温度加载系统、型面测量系统和调节控制系统组成的型面调节模拟试验系统,开展了均温50℃、均温75℃和梯度温度3种温度工况下的型面调节试验.经测试,调节后的天线型面误差降低了60%以上,型面误差RMS值达到30μm以内,为优化调节技术在卫星型号上的推广应用提供了依据.Surface accuracy is critical for the performance of satellite antennas.As the size increases,conventional passive thermal control methods for surface accuracy cannot satisfy the requirement of high precision and high resolution remote sensing satellites.An intelligent adjustment method is proposed in this article.To achieve the optimal surface accuracy,several actuators,whose displacement outputs are assigned by intelligent adjust algorithm,are installed on the back of antenna surface.Based on the surface adjustment simulation system,consisting of a heating system,a surface measuring system and a control system,an experiment under 50℃,75℃ and gradient temperature is conducted respectively to adjust the deformation of antenna surface.The results show that after adjustment,the RMS error of antenna surface is reduced by more than 60% and blow 30μm,which provides a reference for the application of intelligent adjustment method in satellite engineering.

关 键 词：星载天线 型面精度 优化调节 模拟试验系统 

分 类 号：V416.6[航空宇航科学与技术—航空宇航推进理论与工程]