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| The On-line Detection Method of Roll Wear Based on Laser Self-mixing Interference |
| ZHANG Yu-yan1,2,YAN Mei-su1,2, ZHOU Hang1,2,LV Kun-kun1,2 |
1. Institute of Electrical Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China;
2. Key Lab of Measurement Technology and Instrumentation of Hebei Province, Qinhuangdao, Hebei 066004, China |
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Abstract A method of non-contact on-line measurement for testing roller wears based on the measuring principle of laser self-mixing interference was put forward. The principle and project of roller wear testing is investigated. A self-mixing interference displacement detector was used for multi-point measurement and translating the roll wear quantity into micro displacement to get the wearing capacity of the roll. In signal processing, the phase unwrapping method is used to extract phase and the interpolation method is used to improve the test resolution and accuracy. The result of the experiment shows that the resolution of this measuring method is refined to micron.
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2015, Vol. 36 
