结构功能一体化雷达天线变形检测方法研究  

Distortion detection method for structurally integrated antenna of radar

作　　者：钟剑锋[1,2] 蔡建国[3] ZHONG Jian-feng;CAI Jian-guo(The 14th Research Institute of CETC,Nanjing 210039,China;National Key Laboratory of Antenna and Microwave Technology,Nanjing 210039,China;School of Civil Engineering ,Southeast University,Nanjing 210018,China)

机构地区：[1]中国电子科技集团公司第十四研究所,江苏南京210039 [2]天线与微波技术国防科技重点实验室,江苏南京210039 [3]东南大学土木工程学院,江苏南京210008

出　　处：《机电工程》2019年第1期100-103,共4页Journal of Mechanical & Electrical Engineering

基　　金：国家自然科学基金资助项目(51490664);国防基础科研重点项目(JCKY2013210B004)

摘　　要：为解决传统结构仅用作支撑和力传递、功能较为局限,以及服役中一体化天线与载荷高度耦合引起变形的问题,提出了一种兼具天线电磁功能和结构承载能力的新型结构功能一体化天线。将变形检测技术应用到一体化天线中,建立了机电耦合模型实施性能补偿;开展了光纤原理和结构分析,建立了光纤光栅形变量与天线结构形变量之间的关系,提出了一种基于三芯光纤光栅传感器串法网络的天线结构变形检测方法,解决了变形检测难度大、精度低的问题;在一体化天线变形检测实验平台上对光纤光栅测量方法的准确度进行了评价,进行了光纤光栅测量与摄影测量结果的对比试验。研究结果表明:光纤光栅测量的位置误差,除个别点误差较大之外,其他均在10%以内,在可接受的误差范围,满足后续天线性能补偿要求。In order to solve the problems that a traditional structure is only used for supporting and force transmitting and the problems that deformation occurred in service due to the coupling between the structure and the outside load,a new type of structurally integrated antenna of radar with a dual function of antenna and load-carrying capacity was proposed. The deformation detection technology was applied to the structurally integrated antenna,electromechanical coupling model was then constructed and the deformation was compensated. After the analysis of principle and structure of optical fiber,the relationship between the deformation of fiber grating and antenna structure was established.A method was presented to detect the deformation of structurally integrated antenna based on the serial network of triple-core fiber grating sensors. The accuracy of fiber grating measurement was evaluated on the integrated antenna testing system. The comparison of fiber grating measurement and photogrammetry was tested. The experimental results show that the deformation error of the fiber grating measurement,except for a few points,is within 10% error,which is acceptable and can satisfy the antenna performance compensation in the future.

关 键 词：雷达天线 变形检测 光纤光栅 结构功能一体化 

分 类 号：TP24[自动化与计算机技术—检测技术与自动化装置] V214.2[自动化与计算机技术—控制科学与工程]