一种紧凑型无配重式X-Y天线座的结构设计

Structure Design for a Compact X-Y Antenna Pedestal without Balance Weight

文中针对某低空微小卫星地面跟踪系统的工程实际情况,介绍了某小口径天线结构系统的组成及其工作原理,提出了一种紧凑型无配重式X-Y天线座,详细描述了该天线座的结构特征。该天线座克服了以往同类型天线座结构松散、质量大、可靠性低等缺陷,具有运动范围大、跟踪精度高、密封良好等优点。计算了传动系统的相关参数,特别是风力矩和偏心力矩,指标均满足设计要求。文中涉及的结构特征和计算方法对于X-Y天线座的设计具有指导意义。

According to the practical applications of the ground tracking system for a low-altitude small satellite,the composition of a small-caliber antenna structure and its work principle are introduced in this paper.A compact X-Y antenna pedestal without balance weight is proposed.The structure characteristics of the X-Y antenna pedestal are described in detail.The pedestal overcomes the shortcomings such as loose structure,big mass,low reliability and so on of the same type of pedestals in the past and has the advantages of large movement scope,high tracking accuracy and good sealing performance.The relevant parameters of the transmission system are computed,especially the wind moment and eccentric moment.The results show that all the parameters have satisfied the design requirements.The structure characteristics and the computing method in this paper are of guiding significance to the design of X-Y antenna pedestal.