中国机械工程2016，Vol.27Issue(18)：2487-2493,7.DOI:10.3969/j.issn.1004-132X.2016.18.013
寄生式时栅传感器测量不确定度的分析与评定
Analysis and Evaluation of Measurement Uncertainty Sources for Parasitic Time Grating Sensors
摘要
Abstract
In order to conduct systemic analyses of the error and uncertainty sources of parasitic time grating sensors,and to improve the measuring accuracy,a 84-level parasitic time grating was used as the research obj ect to establish the uncertainty evaluation system which met the international GUM standard.The angle calculation formula was analyzed according to its measurement principles, and the uncertainty sources were divided into four categories which included errors of interpolation pulses,quantization errors of interpolation pulse signals,periodic errors of traveling wave signals and environmental errors.The theoretical transfer relationship among different uncertainty components were used to deduce the formula for the calculation of the synthetic measurement uncertainty accord-ing to the modern uncertainty theory.The experimental platform was built to measure the specific val-ues of the uncertainty components by using the oscilloscope measurement result evaluation.And the synthetic measurement uncertainty of the parasitic time grating sensors was calculated by using the a-bove specific value of the uncertainty components which was compared with the actual sensor meas-urement errors of the whole circumference.It may be seen that the uncertainty evaluation results by using the above built uncertainty evaluation method are consistent with the actual sensor errors. Therefore,it may be used in the practical evaluation of the parasitic time grating sensors.关键词
寄生式时栅/不确定度分量/合成不确定度/评定/GUM规范Key words
parasitic time grating/uncertainty component/synthetic uncertainty/evaluation/GUM standard分类
机械制造引用本文复制引用
杨洪涛,章刘沙,费业泰,彭东林..寄生式时栅传感器测量不确定度的分析与评定[J].中国机械工程,2016,27(18):2487-2493,7.基金项目
国家自然科学基金资助项目(51107001) （51107001）
重庆理工大学时栅传感及先进检测技术重庆市重点实验室开放课题资助项目(KFKT2013001) （KFKT2013001）
