摘要
结合计算机辅助测试CAT和虚拟仪器技术,阐述了数字散斑相关方法DSCM(DigitalSpeckleCorrelationMethod)测量刚体位移的理论与过程。同时针对求解三参数相关系数最大值点提出了一种"编程简单、时间节省、精度良好"的实用新算法,即"正方体爬山搜索法"。并利用仿真实验进行了成功验证,仿真实验效果非常理想,测量值与给定理论值相比很接近,计算速度也比较快。
With the computer-aid test and virtual instrument technology,the theory and procedure of measuring displacement of a rigid body using digital speckle correlation method are introduced in this paper. Furthermore,a cubic mountain climbing searching method is proposed for finding the maximum of correlation coefficient of three parameters, which is an'easy programming,time saving,high precision'new applied arithmetic. The principle is validated by imitating experiment that the effect is very successful. Measurement values are quite close to theory values and the calculating time is also speedy.
出处
《计算机测量与控制》
CSCD
2004年第4期307-309,共3页
Computer Measurement &Control
基金
国家自然科学基金资助项目(10074017)
关键词
刚体位移测量
数字散斑相关法
计算机辅助测试
CAT
虚拟仪器
DSCM(digital speckle correlation method)
displacement of rigid body
a cubic mountain climbing searching method
