Acta Metrologica Sinica  2017, Vol. 38 Issue (1): 123-126    DOI: 10.3969/j.issn.1000-1158.2017.01.26
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Evaluation and Real Time Updating of Measurement Uncertainty Based on Bayesian Information Fusion
JIANG Rui,CHEN Xiao-huai,WANG Han-bin,XIAO Ying,XU Lei,CHENG Yin-bao,CHENG Zhen-ying
School of Instrument Science and Opto-electronic Engineering, HFUT, Hefei, Anhui 230009, China
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Abstract  Based on the principle of Bayesian information fusion and statistical inference, the dynamic evaluation model of uncertainty was established and the uncertainty of measurement results was updated in real time. The maximum entropy principle and hill-climbing algorithm were introduced to determine the prior distribution probability density function and the likelihood function of the sample information. The distribution of posterior distribution of PDF was calculated by combining the Bayes formula. And the optimal estimation of uncertainty was achieved. The case and simulation showed that the measurement uncertainty obtained by Bias and maximum entropy method was more accord with the standard requirement.
Key wordsmetrology      uncertainty evaluation      Bayes      information fusion      maximum entropy principle      hill-climbing algorithm     
Received: 09 October 2015      Published: 28 December 2016
PACS:  TB9  
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JIANG Rui
CHEN Xiao-huai
WANG Han-bin
XIAO Ying
XU Lei
CHENG Yin-bao
CHENG Zhen-ying
Cite this article:   
JIANG Rui,CHEN Xiao-huai,WANG Han-bin, et al. Evaluation and Real Time Updating of Measurement Uncertainty Based on Bayesian Information Fusion[J]. Acta Metrologica Sinica, 2017, 38(1): 123-126.
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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2017.01.26     OR     http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2017/V38/I1/123
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