10 February 2017 An out-of-plane displacement measurement system based on hardware tracking
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Proceedings Volume 10250, International Conference on Optical and Photonics Engineering (icOPEN 2016); 102502W (2017) https://doi.org/10.1117/12.2266760
Event: Fourth International Conference on Optical and Photonics Engineering, 2016, Chengdu, China
Abstract
In this work, we propose an laser-interference based measurement method that employs a hardware device in the reference arm to track the out-of-plane displacement in the objective arm. Then a real-time one-point out-of-plane displacement measurement system is built up using a Michelson interferometer, a PZT device, a CCD camera and a tracking control system. The system works by checking the movement of fringes and then promoting PZT to track the displacement. A tracking algorithm including direction judgment and correlation computation is developed to decide whether PZT is started and the distance that PZT is ordered to move. Experimental results demonstrate the effectiveness of the system and finally the detailed mechanism of the system is discussed.
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Chen Xiong, Chen Xiong, Ming Zhang, Ming Zhang, Wenxin Hu, Wenxin Hu, Hong Miao, Hong Miao, } "An out-of-plane displacement measurement system based on hardware tracking", Proc. SPIE 10250, International Conference on Optical and Photonics Engineering (icOPEN 2016), 102502W (10 February 2017); doi: 10.1117/12.2266760; https://doi.org/10.1117/12.2266760
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