面向大型反射面天线结构的机电综合设计与分析系统

针对天线机电分离设计的现状，研究了天线机电综合集成技术和天线组合结构理论， 并采用精确PO法分析天线远区辐射电场，建立了面天线参数化设计的层次结构，解决了由背 架、反射面和中心体等组成的组合结构网格自动划分难题，研制了天线结构分析与电磁计算 综合集成系统。实现了天线虚拟样机的参数化设计、机电性能分析与判断，可获得天线位移 云图、应力云图与电场方向图等准确的重要指标信息。该系统可用来指导天线结构设计人员 的工作，改进天线设计手段和方法，提升设计分析质量，达到缩短设计周期、降低设计成本 的目的。

Large Reflector Antenna Structures Oriented Integrated Mechatronic Design and Analysis System Platform

For solving the separate problem of antenna structural and electromagnetic design,the electromechanical synthesis technology and composite structure theory of reflector antennas are studied.Based on the structural displacement field,PO method is adopted to analyze the far radiated field.The hierarchical structure relationship of antenna parametric design is also determined.The key difficulty of automatic meshing of composite structures is solved,which consist of back-up structure,reflector and center body etc.An integrated mechatronic design and analysis system is developed including the structure finite element analysis and EM calculation,which can implement the parametric design of antenna simulated prototype and accurate analysis and evaluation of the mechanical and electrical performances,and provide the precise and detailed information about the displacement nephogram,stress nephogram and radiation pattern of parabolic reflector antennas.The analysis results of a 7.3m antenna show that the platform can offer the theoretical guidance and assistance to the antenna structural designers,improve antenna design quality and efficiency,and reduce the design period and manufacture cost.