飞行器多层透明风挡谱域低相干测量方法研究  

Research on the spectral-domain low-coherence measurement method for multilayer transparent wind shield of aircraft

作　　者：张涛[1] 夏仁波[1] 赵吉宾[1] 徐金亭 孙玉文[2] Zhang Tao;Xia Renbo;Zhao Jibin;Xu Jinting;Sun Yuwen(Shenyang Institute of Automation,Chinese Academy of Sciences,Shenyang 110169,China;School of Mechanical Engineering,Dalian University of Technology,Dalian 116086,China)

机构地区：[1]中国科学院沈阳自动化研究所,沈阳110169 [2]大连理工大学机械工程学院,大连116086

出　　处：《仪器仪表学报》2024年第11期132-140,共9页Chinese Journal of Scientific Instrument

基　　金：国家资助博士后研究人员计划C档项目(GZC20232882);中国博士后科学基金第74批面上项目(2023M743703);辽宁省博士科研启动基金项目(2024-BSBA-55)资助。

摘　　要：透明风挡是飞行器的关键结构件,必须具有优异的性能。为减轻重量,飞行器透明风挡采用“有机玻璃-透明聚碳酸酯-有机玻璃”的异质多层复合式结构,其性能与透明件各层的厚度紧密相关。现有测量方法无法满足飞行器透明风挡高效率、高精度厚度逐层测量的综合性需求。为此,提出飞行器多层透明风挡谱域低相干测量方法。首先通过正交色散提升色散能力,从而增大测量量程,然后建立透明件厚度与光谱波数之间的映射模型,并利用高精度平行平晶标定了模型参数,最后搭建了测量系统。实验结果表明所提出的方法最大量程超过41 mm,具有微米级的测量精度,测量速度小于8 ms,能够满足飞行器多层透明风挡厚度测量的需求。The transparent wind shield is a key structural part of the aircraft,requiring outstanding performance.To reduce weight,the aircraft transparent wind shield adopts a heterogeneous multi-layer composite structure of“organic glass-transparent polycarbonate-organic glass”,where the performance is closely related to the thickness of each layer of the transparent wind shield.Existing measurement methods cannot meet the comprehensive requirements for efficient and high-precision layer-by-layer thickness measurement of the transparent wind shield.Therefore,a new method for spectral-domain low-coherence measurement of the multi-layer transparent wind shield is proposed.Firstly,by using orthogonal dispersion to enhance dispersion capability,the measurement range is increased,then a mapping model between the thickness of the transparent wind shield and the spectral wavenumber is established,and the model parameters are calibrated with high-precision parallel flat crystal,finally,a measurement system is constructed.Experimental results show that the proposed method has a maximum range exceeding 41 mm,with micrometer-level measurement accuracy,a measurement speed less than 8 ms,and can meet the requirements for thickness measurement of the multilayer aircraft transparent wind shield.The transparent windshield is a key structural part of the aircraft,which requires outstanding performance.To reduce weight,the aircraft′s transparent windshield utilizes a heterogeneous multi-layer composite structure of“organic glass-transparent polycarbonate-organic glass”,where the performance is closely related to the thickness of each layer of the transparent windshield.Existing measurement methods cannot meet the comprehensive requirements for efficient and high-precision layer-by-layer thickness measurement of the transparent windshield.Therefore,a new method for spectral-domain low-coherence measurement of the multi-layer transparent windshield is proposed.Firstly,by using the orthogonal dispersion to enhance dispersion capabil

关 键 词：飞行器 透明风挡 谱域低相干 厚度测量 

分 类 号：TH113[机械工程—机械设计及理论]