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《Acta Metrologica Sinica》 2007-03
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Error Analysis for Amplitude Segmenting Subdivision of Moiré Fringe

TANG Xiao-qi,LIU Shi-feng,WANG Ping-jiang,TANG Yu-zhi,LUO Chun-huai(National NC System Eng.Research Center,Huazhong Univ.of Sci.& Tech.,Wuhan, Hubei 430074,China)  
An error calculation method for amplitude segmentation subdivision of moiré fringe by tangent method is proposed.By analyzing the changes of tangent function phases under the influence of four kinds of noise,determining the key-points of the tangent function and calculating the maximum phase changes,it helps to confirm the noises which have the maximum influence on the subdivision.So that in the practice,it can help to inhibit the noise,and improve the accuracy of subdivision.MATLAB was also applied to add noises and errors to the ideal signal,then to simulate the influence to the subdivision,and plot relative graphs.
【Fund】: 973数字化制造基础研究项目(子课题:高速数控机床动态行为演变及其高精度控制 编号:2005CB724101)
【CateGory Index】: TP202.4
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