共形承载天线的一体化喷射成形机理与制造要素协同调控机制

The Conformal Load Bearing Antenna Structure (CLAS) is a type of novel multifunctional antenna structure which combines structural and electrical functions to one structural component, whose structure parts and electromagnetic parts are closely integrated. Thus traditional electro-mechanical dissociated manufacturing methods can hardly to be effictive. Integrated printing method, printing the structure, microwave circuit and radiating element of CLAS synchronously, is one of the most promising technologies for CLAS fabrication. However, there are still three main open problems. The first one is that the existed theory in inkjet printing is for Newtonian fluids jetting, which is not applicable for analyzing jetting process of non-Newtonian fluids in printing CLAS. The second is that it is difficult to print fluids with totally different physical characteristic concurrently at desired accuracy. And the third is it is hard to tune printing and curing parameters to get expected mechanical property and electromagnetic performance. To solve these problems, approximation theory model for describing fluids in the orifice, droplets formation and spreading of jetting droplets on certain substrate will be derived from the view of non-Newtonian fluid mechanics firstly, based on that a hybrid model will be built by introducing support vector machine with experimental data to modify the approximation theory model for analyzing CLAS printing and curing process accurately. Secondly, the relationship of printing and curing paramaters to the mechanical and electromagnetic properties of the CLAS under fabrication will be established by multi-scale analysis of the printed thin-film interfacial profile. Finally, adaptive firing control for non-Newtonian fluids printing and integrated structure and control optimization of the CLAS printing system will be proposed and an integrated printing system will be developed to implement coordination control of fabrication process. These works will be expected to play an important role to solve CLAS fabrication problem.

共形承载天线是一种兼具电磁辐射和承载功能的新型天线，其结构部分与电磁部分高度融合，传统的机电分离制造方法难以奏效。支撑结构、微波电路和辐射单元的一体化喷射成形是一种极具潜力的解决途径，但需解决三个关键问题：其一是已有喷射成形理论针对牛顿流体，不适用于分析非牛顿流体的喷射成形过程；其二是难以实现不同特性制剂的混合喷射与精确定位；其三是难以调控喷射成形要素以实现期望的性能。为此，首先从非牛顿流体力学出发分别建立喷孔内流体、喷孔外液滴和基板上铺展过程的近似理论模型，在此基础上基于实验数据采用支持向量机混合建模的方法修正近似模型，以准确分析喷射成形过程；其次，以喷射成形薄膜为媒介，引入多尺度分析的方法揭示喷射成形要素对天线性能的影响机理；最后，探索非牛顿流体的自适应喷射控制和喷射成形系统的结构与控制集成设计方法，并研制一体化喷射成形验证系统，实现喷射成形要素的协同调控,为突破共形承载天线制造难题奠定基础。

共形承载天线是一种兼具电磁辐射和承载功能的新型天线，其结构部分与电磁部分高度融合，传统的机电分离制造方法难以奏效。支撑结构、微波电路和辐射单元的一体化喷射成形是一种极具潜力的解决途径，但需解决三个关键问题：其一是已有喷射成形理论针对牛顿流体，不适用于分析非牛顿流体的喷射成形过程；其二是难以实现不同特性制剂的混合喷射与精确定位；其三是难以调控喷射成形要素以实现期望的性能。为此，首先从非牛顿流体力学出发分别建立了喷孔内流体、喷孔外液滴和基板上铺展过程的近似理论模型，在此基础上采用支持向量机混合建模的方法修正了近似模型，以准确分析喷射成形过程；其次，以喷射成形薄膜为媒介，引入多尺度分析的方法揭示喷射成形要素对天线性能的影响机理；最后，提出了非牛顿流体的自适应喷射控制、烧结固化和喷射成形系统的结构与控制集成设计方法，并研制了一体化喷射成形设备原理样机，实现了喷射成形要素的协同调控。本项目成果已成功应用与多个重点工程，取得了初步的效益。