基于剪切散斑干涉技术的物体变形动态检测

发布时间：2018-07-08 16:16

本文选题：光学测量 + 变形检测　；参考：《应用光学》2017年05期

【摘要】：为使仅适用于静态测量的空间相移剪切散斑干涉系统可用于物体变形的动态测量,在对传统剪切散斑干涉系统加以改进的基础上,提出一种物体变形动态检测方法。将检测系统中的压电陶瓷控制器用参考镜代替,减少了物理装置控制与执行的时间。对于物体发生变形的同一状态,仅需采集一幅干涉图像即可满足后期计算,加以二维连续小波滤波和最小二乘相位解包算法,能满足物体变形动态在线检测的需求。理论和实测实验表明,该方法能快速可靠地检测出物体动态形变,整个系统的最大误差范围在-1.5rad~1.5rad之间,整个检测过程最大误差百分比为6.4%,有较高的精度和实用性,为新型剪切散斑干涉测量系统的改进和设计提供参考。
[Abstract]:In order to make the spatial phase-shifting shearing speckle interferometry system suitable for static measurement for dynamic measurement of deformation of objects, a dynamic detection method for deformation of objects is proposed on the basis of the improvement of traditional shearing speckle interference system. The piezoelectric ceramic controller in the detection system is replaced by a reference mirror, and the control of physical device is reduced. And the time of execution. For the same state of the deformation of the object, only one interference image can be collected to satisfy the later calculation. The two dimensional continuous wavelet filtering and the least square phase unwrapping algorithm can meet the demand of the dynamic on-line detection of the deformation of the object. The theory and the measured experiment show that the method can detect the object quickly and reliably. Dynamic deformation, the maximum error range of the whole system is between -1.5rad~1.5rad, the maximum error percentage of the whole detection process is 6.4%. It has high accuracy and practicability, and provides a reference for the improvement and design of the new type of shearing speckle interferometry system.
【作者单位】：齐齐哈尔大学计算机与控制工程学院;
【基金】：国家自然科学基金(61100103) 教育部留学回国人员科研启动基金(20141685) 黑龙江省教育厅基本业务专项理工面上项目(135109236) 黑龙江省自然科学基金面上项目(F2017029) 齐齐哈尔大学2016年研究生创新科研项目(YJSCX2016-023X)
【分类号】：O436.1

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