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《Optical Technique》 2012-04
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Improve laser sensors' accuracy for on-line calibration system of displacement transducers

Xie Jing1,2,GAO Hongtang2,Ye Xiaoyou2,Li Dongsheng1,CHEN Zizhang3(1.China Jiliang University,Hangzhou 310013,Zhejiang,China)(2.National Institute of Metrology,Beijing 100013,China)(3.ABB Xiamen Switchgear Co.Ltd,Xiamen 361006,Fujian,China)  
An on-line calibration approach for industrial displacement transducers is developed.The laser displacement sensor is used as standard to improve its accuracy to meet the requirements in different applications.In order to achieve the objective,laser sensor is calibrated by automatic interference comparator.Analyzing the data are obtained from the device's application of air spring system in automatic interference comparator,the error compensation methods and mathematical model are presented.Experimental results show that laser sensor on-line calibration system can solve factory calibrating problems with accuracy requirement over 0.1%.
【CateGory Index】: TP212.14
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