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《Acta Optica Sinica》 2016-02
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Dynamic Displacement Measurement Method Research of Linear CCD Based on Timing Delay

Fu Min;Zhu Ge;Zheng Fangyan;Xu Xianbo;Gao Yu;Chang Chi;Chongqing Key Laboratory of Time-Grating Sensing and Advanced Testing Technology, Engineering Research Center of Mechanical Testing Technology and Equipment, Ministry of Education, Chongqing University of Technology;  
The traditional linear CCD measurement method is only suitable for static image acquisition or displacement measurement at low speed. On the basis of the CCD dynamic error analysis in the process of dynamic measurement, a drive timing delay method which is synchronous measured by multiple CCD is proposed. This method uses multiple linear CCD arranged from beginning to end in a space and straggles with each other in time to realize multiple displacement values measurement, so as to improve the dynamic measurement range of linear CCD. To verify the validity of the scheme, a timing delay angular sensor is designed by a circular array which is constituted by five linear CCD sensors of the same tape, and the construction of the corresponding experimental system is completed. By measuring compare with high precision circular grating in the different rotational speeds,with the increase of speed, the timing delay measurement method of dynamic characteristics is obviously superior to the traditional measuring method. The results indicate that the level of dynamic error of the timing delay method in 30 r/min is equal to the traditional method in 10 r/min. It concludes that the feasibility of linear CCD dynamic characteristics improvement is verified with the timing delay measurement method.
【Fund】: 国家自然科学基金(51505053 51505052);; 国家重大科学仪器设备开发专项(2013YQ220893);; 重庆市基础科学与前沿技术研究专项项目(cstc2015jcyj A1467)
【CateGory Index】: TN386.5
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