星载天线双轴定位机构指向精度分析  

Pointing Accuracy Analyses of a Satellitic Two-axes Antenna Pointing Mechanism

作　　者：孙京[1] 马兴瑞[2] 于登云[1] 

机构地区：[1]中国航天科技集团公司五院总体部,北京100094 [2]中国航天科技集团公司,北京100037

出　　处：《宇航学报》2007年第3期545-550,共6页Journal of Astronautics

摘　　要：以星载天线双轴定位机构为对象,分析了其指向精度的影响因素,从传动误差、测量误差、安装误差以及热变形误差等方面,研究了各项精度影响因素的分析模型和计算方法,建立了指向精度的分析模型,并以某一天线双轴定位机构为例进行指向精度分析。This paper mainly focus on the pointing accuracy analyses of a satellitic two-axes antenna pointing mechanism(TAAPM).The analytical models and calculating method of the various accuracy affected components are established,on all sides,such as transmission,measurement,assembly,thermal deformation,and so on.The pointing accuracy analytical model was established synthetically.An analytical example of pointing accuracy of the TAAPM is given finally.

关 键 词：双轴定位机构 指向精度 精度影响因素 精度综合分析 

分 类 号：V443.4[航空宇航科学与技术—飞行器设计]