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基于LabVIEW的光纤温度传感器动态补偿方法的研究

发表时间:2009-09-30  浏览量:1333  下载量:655
全部作者: 陈卫亮,戴先中,丁煜函
作者单位: 东南大学自动化学院;东南大学复杂工程系统测量与控制教育部重点实验室
摘 要: 针对半导体光纤温度传感器动态特性较差的问题,设计了一种LabVIEW(laboratory virtual instrumentation engineering workbench)下由光纤温度传感器及其神经网络逆动态补偿器构成的复合温度测量系统。采用高精度的数据采集卡对光纤温度传感器进行数据采集,得到神经网络的训练样本,通过神经网络训练得到静态神经网络,将其与微分器组合可构成期望的神经网络逆动态补偿器,进而和原传感器串联构成复合的温度测量系统。实验结果表明:该复合温度测量系统具有较高的稳态精度和良好的动态特性,稳态精度可达±0.6℃,响应速度可达4 s.
关 键 词: 控制理论与控制工程;动态补偿器;神经网络逆;LabVIEW;光纤温度传感器;温度测量
Title: Dynamic compensation method of fiber-optic temperature sensor in LabVIEW
Author: CHEN Weiliang, DAI Xianzhong, DING Yuhan
Organization: School of Automation, Southeast University; Key Laboratory of Measurement and Control of Complex Systems of Engineering, Ministry of Education, Southeast University
Abstract: In view of the semiconductor absorption fiber-optic temperature sensor’s poor stable precision and dynamic characteristic, a new composite temperature measurement system base on ANN (artificial neural network) is designed using fiber-optic temperature sensor and its ANN inversion dynamic compensator. High precision data acquisition card is used for data acquisition, through enough samples training, an effective BP neural network can be established. By combining it with the differentiator, the ANN inversion dynamic compensator can be established, and by cascading it with the fiber-optic temperature sensor, a composite temperature measurement system can be formed. Experiment result indicates that the system has higher stable precision and quicker response speed. The stable precision can reach ±0.6℃, and the response speed can reach 4s.
Key words: control theory and control engineering; dynamic compensator; artificial neural network inversion; LabVIEW; fiber-optic temperature sensor; temperature measurement
发表期数: 2009年9月第18期
引用格式: 陈卫亮,戴先中,丁煜函. 基于LabVIEW的光纤温度传感器动态补偿方法的研究[J]. 中国科技论文在线精品论文,2009,2(18):1958-1964.
 
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