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《Equipment for Electronic Products Manufacturing》 2011-02
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An Analysis of the Automatic focusing System of the Grinding Wheel Dicing Saw

LIU Xiaobin,TU Dianliu,CHAI Bin,SHAN Fuyuan(The 45th Research Institute of CETC,Beijing 101601,China)  
In this paper the hardware composition and the software design are introduced in the automatic focusing system of the grinding wheel dicing saw.An automatic focusing Search algorithm is developed in order that the CCD and the lens will move along the axis to achieve automatic Focal length adjustment.Image processing means is utilized to achieve automatic searching for the Focus position and the evaluation of the image clearness by the Evaluation function.This method has been verified in the grinding wheel field test.
【CateGory Index】: TH742
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