In-flight deformation measurement for high-aspect-ratio wing based on 3D speckle correlation  

作　　者：张兴国 HU Binghua WANG Yuanliang YAN Hui MA Xiaodong GE Quanbo ZHANG Xingguo(School of Computing,Northwestern Polytechnical University,Xi′an 710072,P.R.China)

机构地区：[1]School of Computing,Northwestern Polytechnical University,Xi′an 710072,P.R.China [2]Test Technology Institute,Chinese Flight Test Establishment,Xi′an 710089,P.R.China [3]School of Logistics Engineering,Shanghai Maritime University,Shanghai 201306,P.R.China [4]College of Automation,Nanjing University of Information Science&Technology,Nanjing 210044,P.R.China

出　　处：《High Technology Letters》2023年第3期257-268,共12页高技术通讯（英文版）

基　　金：Supported by the National Natural Science Foundation of China(No.62271400).

摘　　要：In order to get an effective solution of the in-flight wing deformation measurement for high-wing aircrafts with high-aspect-ratio,a method based on three-dimensional(3D)speckle correlation technique is proposed.Firstly,an in-flight wing deformation measurement system with two sets of conjugate cameras is designed based on structural characteristics and test requirements of high-wing aircrafts with large-aspect-ratio.Secondly,the in-flight wing deformation measurement method based on 3D speckle correlation technique is introduced including three aspects:measuring system and wing datum calibration,speckle image matching and 3D reconstruction,and wing deformation analysis.Fi-nally,ground simulation test of dynamic deformation measurement of a scaled model wing and flight test of dynamic deformation measurement of a large transport wing are carried out.The test results show that the measuring accuracy of single point coordinate in ground simulation test is better than 0.1 mm/m,in the airborne vibration environment,the static single-point positioning accuracy is bet-ter than 5 mm,and the in-flight wing deformation measurement data is well received by the flight test engineers.This method can satisfy the requirements of stability,reliability,high precision,non-con-tact and full-field measurement for dynamic deformation measurement of aircraft wing with high-as-pect-ratio.

关 键 词：HIGH-ASPECT-RATIO three-dimensional(3D)speckle wing datum 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术] V215.3[自动化与计算机技术—计算机科学与技术]