天线座多柔体动力学建模与仿真分析  

Flexible Multi-body Dynamics Modeling and Simulation Analysis of Antenna Pedestal

作　　者：胡长明[1] 王长武[1] 王贤宙[1] 

机构地区：[1]南京电子技术研究所,江苏南京210039

出　　处：《电子机械工程》2015年第5期52-57,共6页Electro-Mechanical Engineering

摘　　要：天线座作为支撑天线阵面探测目标的传动机构,是机械扫描雷达的一个典型部件,其动力学响应特性直接影响天线波束的指向精度。文中基于ADAMS仿真软件,以第1类Lagrange(拉格朗日)方程为建模理论,建立了天线座多柔体系统动力学模型,分析了天线座齿轮副接触力、转动角速度、转动角加速度等动力学响应特性,并与天线座多刚体动力学模型仿真结果进行了对比分析。仿真得到的天线座动力学典型数据与试验结果基本一致,表明文中采用的多柔体系统动力学建模方法及建模过程合理。该动力学建模方法可供后续类似结构设计借鉴和参考。The antenna pedestal,as the transmission mechanism to support the antenna array,is a typical part of mechanic scanning radar. The dynamic characteristics of the antenna pedestal determine the pointing accuracy of the antenna beam. In this paper,with the 1st Lagrange function as the modeling theory,the flexible multi-body dynamics model of the antenna pedestal is built based on ADAMS software. The dynamic characteristics of the antenna pedestal are analyzed including the contact force,the angular velocity and the angular acceleration of the internal gear pair and compared with the simulation results of the rigid multi-body dynamics model. The simulation results are in agreement with the experimental results,which shows that the flexible multi-body dynamics modeling method is feasible and reasonable. This simulation method can provide excellent reference for structure design of the similar transmission mechanism.

关 键 词：天线座 多柔体动力学 动力学特性 仿真 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术] TN820.82[自动化与计算机技术—计算机科学与技术]