三维散斑相关法在机翼变形动态测量中的应用  

Application of 3D-DSCM in Dynamic Test on Airplane Wing's Deformation

作　　者：张红颖[1] 陈晨[1] 王韶彬 易建军[1] 

机构地区：[1]中国民航大学电子信息与自动化学院,天津300300

出　　处：《测控技术》2016年第7期31-34,共4页Measurement & Control Technology

基　　金：国家自然科学基金民航联合基金项目(U1333105);中央高校基本科研业务费(3122015C016)

摘　　要：针对机翼变形中应变检测的常规方法和传统方法存在的不足,以及飞行过程中的动态性和实时性要求,对基于三维散斑相关的机翼变形动态测量方法进行了研究。首先,由数字散斑相关和双目立体视觉的基本理论出发介绍了机翼动态三维变形测量方法;然后,针对散斑图像特点,分别从实时性、匹配基元、匹配准则、算法结构几方面进行分析研究,设计出适合于散斑图像特点的区域立体匹配算法;最后,构建出系统布局,并通过实际制作机翼模型进行验证。经分析,实验数据能较好地反映机翼变形过程中的三维应变状态。进而验证了该方案及算法的可行性。In order to overcome the insufficiency of traditional methods in the detection of airplane wing＇s deformation,and meet the dynamic and real-time requirements during flight,the method in dynamic test on the airplane wing＇s deformation based on three dimensional digital speckle correlation method（3D-DSCM） is researched.Firstly,three dimensional deformation measuring method on the dynamic deformation of wing is introduced.Then,in light of speckle images＇ features,real-time,matching element,matching criterion,algorithm structure are respectively researched,and the region stereo matching algorithm is designed.Finally,through constructing the system layout and making a real wing model,the method is verified.Experimental results show that the scheme and algorithm meet the requirements of the measurement on the airplane wing＇s 3D deformation,and it is feasible.

关 键 词：机翼变形 散斑 双目立体视觉 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]