结构功能一体化雷达天线变形检测方法研究
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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.
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.
引文
[1]唐宝富,钟剑锋,顾叶青.有源相控阵雷达天线结构设计[M].西安:西安电子科技大学出版社2016.
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[2]周金柱,宋立伟,杜雷刚,等.动载荷对结构功能一体化天线力电性能的影响[J].机械工程学报,2016,52(9):1-11.
[3]王从思,韩如冰,王伟,等.星载可展开有源相控阵天线结构的研究进展[J].机械工程学报,2016,52(5):107-123.
[4]芦吉云.光纤光栅在智能结构动态监测中的应用研究[D].南京:南京航空航天大学民航学院,2009.
[5]杨兴,胡建明,戴特力.光纤光栅传感器的原理及应用研究[J].重庆师范大学学报:自然科学版,2009,26(4):101-105.
[6]吴祖堂,陈志军,邹虹,等.采用光纤光栅传感器测量模型材料应变的原理和应用[J].机械设计与研究,2012,28(1):82-84.
[7]孟利波,金观昌,姚学锋. DSCM中摄像机光轴与物面不垂直引起的误差分析[J].清华大学学报:自然科学版,2006,46(11):1930-1932.
[8] SUTTON M A,MCNEILL S R,HELM J D,et al. Advances in two-dimensional and three-dimensional computer vision[M]. Berlhn:Springer Berlin Heidelberg,2000.
[9] ZHOU Jin-zhu,HUANG Jin,HE Qing-qang,et al. Development and coupling analysis of active skin antenna[J].Smart Materials and Structures,2017,26(2):1-17.