| 传感器测量不确定度的卷积评定方法 |
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| 引用本文： | 李阳,荆学东,丁虎.传感器测量不确定度的卷积评定方法[J].船舶工程,2015,37(2):93-96. |
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| 作者姓名： | 李阳 荆学东 丁虎 |
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| 作者单位： | 陕西科技大学机电学院,上海应用技术学院,中船重工第704研究所 |
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| 基金项目： | 1、基于微分流形理论的虚拟仪器测量不确定度评估方法研究-国家自然科学基金，编号：51275310； 2、基于微分流形理论的虚拟仪器静态测量不确定度评估方法研究-上海市教育委员会科技创新项目，编号：13YZ121 ； 3、虚拟式多功能皮革性能指标自动测量仪研制-陕西省教育厅专项科研计划，编号：09JK350； 4、形位公差和表面粗糙度检测虚拟仪器研制-陕西省科技厅工业攻关，编号：2008k05-11。 |
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| 摘 要： | 传感器作为测试系统的首要环节,其测量不确定度对测试结果影响最大。为此,分析了传感器主要不确定度来源,讨论了传感器测量不确定度常用的评估方法的优劣。针对当前传感器测量不确定度评估存在问题,提出了采用卷积原理来评定传感器合成不确定度的一种新方法,并运用MATLAB实现了该方法;最后以称重传感器作为实例验证了该方法的有效性。
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| 关 键 词： | 传感器 测量不确定度 GUM 卷积 |
| 收稿时间： | 2014/12/24 0:00:00 |
| 修稿时间： | 2/5/2015 12:00:00 AM |
Evaluation method of measurement uncertainty of transducer based on convolution |
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| LI Yang;JING Xue-dong;DING Hu.Evaluation method of measurement uncertainty of transducer based on convolution[J].Ship Engineering,2015,37(2):93-96. |
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| Authors: | LI Yang;JING Xue-dong;DING Hu |
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| Institution: | LI Yang;JING Xue-dong;DING Hu;School of Mechanical Engineering, Shanxi university of science and technology;School of Mechanical Engineering,Shanghai institute of Technology;Shanghai Marine Equipment Research Institute; |
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| Abstract: | As the first part of the whole testing system, the measurement uncertainty of transducer influences greatly on the uncertainty of measurement results. For this reason, the main sources of transducer uncertainty have been analyzed, and the evaluation methods have been discussed about their properties; proposes a new method to evaluate the measurement uncertainty of a transducer has been proposed based on convolution of probability density function of sources of measurement uncertainty; the method has been realized via MATLAB .Finally, the method has been successfully applied to evaluate the measurement uncertainty of a load cell, which reveals the effectiveness of the method. |
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