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| A Design of Auxiliary Alignment Measuring System for Micro Component Tension |
| YANG En-zhen,WANG Biao,NING Xiao-xu,WANG Yong-hong |
| School of Instrument Science and Opto-electric Engineering, Hefei University of Technology, Hefei, Anhui 230009, China |
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Abstract An auxiliary alignment measuring system for micro component tensile test is designed. Based on laser collimation features with light refraction law and reflection law combined, the image information of laser spot including displacement and angle deviator can be obtained by orthogonal two dimensional camera. The mathematical model of the two-dimensional displacement and angle deviator and the laser image point changes is established as well as the experimental platform. On the basis of this model, the adjustable parameter variables of two-dimensional displacement and angle deviator can be acquired after processing the obtained images by MATLAB. The results of the test indicate that the two-dimensional angle deviator resolution can reach 0.001° and the repetitiveness is superior to 0.02°; the two-dimensional displacement resolution can reach submicron and the repetitiveness is superior to 10 μm. This measuring system is proved to be able to provide parameter adjustment for auxiliary guiding alignment and improve the accuracy of the tensile testing data in micro component tensile test.
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Received: 25 December 2015
Published: 27 September 2017
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Corresponding Authors:
Biao WANG
E-mail: wangbiaowb@163.com
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2017, Vol. 38 
