极化自适应方位俯仰组合关节的结构设计  

Mechanical Design and Analysis of Polarization-Adaptive Azimuth-Elevation Joint

作　　者：贺定国[1] 

机构地区：[1]中国电子科技集团公司第三十九研究所,陕西西安710065

出　　处：《雷达科学与技术》2007年第3期236-238,共3页Radar Science and Technology

摘　　要：旋转关节是一种重要的微波器件,广泛用于大型军用和民用雷达中。极化自适应方位俯仰组合关节是一种新型旋转关节,能够在完成天线方位和俯仰角转动的同时,实现电信号的极化自适应旋转。该文利用行星轮系机构使极化转动角度等于天线方位俯仰转动角度矢量和的一半,从而使电信号在传输过程中保持相位恒定不变。在对机构进行机械传动设计后,进行了运动分析和效率估算,确定了转动回差对电信号的影响,并进行了分析和实验验证。Rotary joint, a key microwave device of high-power radar, is widely used in large military and civil radars. The assembled polarization-adaptive joint（azimuth-elevation joint）, a new-style rotary joint, can complete the azimuth and elevation rotating angles of the antenna and finish polarization-adaptive rotating of electronic signal simultaneously. Using the planetary wheels, the rotary joint presented in this article makes the polarization rotary angle be equal to half of the vector summation of azimuth angle and elevation angle, and consequently makes the electronic signal phase be invariable during transmission. After designing of mechanical transmission, the mechanical movement is analyzed and its efficiency is evaluated. Finally, the influence of rotating echo difference on electronic signal is ascertained, analyzed and then confirmed by experiment.

关 键 词：关节 行星轮系 极化器 半角传动 结构设计 

分 类 号：TN628[电子电信—电路与系统] TN957.2