基于并联差速机构的通信天线及指向建模和跟踪方法

Communication Antenna Based on Parallel Differential Mechanism and Its Pointing Modeling and Tracking Method

随着卫星星座互联网的发展及通信装备实战化升级换代,通信天线性能指标的要求越来越高。设计了一种基于并联差速机构的通信天线,介绍了通信天线的结构,分析了并联差速机构的原理,并进行通信天线指向建模和跟踪方法研究。在研究中,定义了运动数学模型,推导了解析式,进而得到跟踪方法。相较于传统采用串联驱动结构的通信天线,基于并联差速机构的通信天线具有刚度大、体积小、指向精度高等特点,在民品通信和军用通信领域具有良好的适用性。

With the development of satellite constellation internet and the upgrading of communication equipment for actual combat,the performance index requirement of communication antenna is getting higher and higher.A communication antenna based on parallel differential mechanism was designed,the structure of the communication antenna was introduced,the principle of parallel differential mechanism was analyzed,and the investigation on pointing modeling and tracking method for the communication antenna was carried out.In the study,the motion mathematical model was defined,the analytical equation was derived,and then the tracking method was obtained.Compared with the traditional communication antenna using a series driven structure,the communication antenna based on parallel differential mechanism has the characteristics of high stiffness,small size and high pointing accuracy,and has good applicability in the field of civil and military communication.