| 基于虚拟仪器的互相关流速测量系统设计 |
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| 引用本文： | 李文涛,钱磊,左鸿飞,李忠虎. 基于虚拟仪器的互相关流速测量系统设计[J]. 工业仪表与自动化装置, 2014, 0(2): 23-28 |
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| 作者姓名： | 李文涛 钱磊 左鸿飞 李忠虎 |
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| 作者单位： | 内蒙古科技大学 信息工程学院,内蒙古 包头014010 |
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| 基金项目： | 内蒙古自然科学基金项目（2012MS0715） |
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| 摘 要： | 采用计算机模拟与实验相结合的方式,建立了基于虚拟仪器平台的互相关测量系统。系统采用LabVIEW函数选板中信号运算部分提供的互相关和自相关函数模块,设计了使用函数互相关、极性互相关和差动自相关3种算法实现互相关流速测量的程序。使用随机信号对上述3种算法进行验证,并对计算结果进行比较,验证结果表明互相关和差动自相关算法较为理想。
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| 关 键 词： | LabVIEW 虚拟仪器 相关性 速度测量 |
Design of correlation velocity measurement system based on virtual instrument |
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| LI Wentao,QIAN Lei,ZUO Hongfei,LI Zhonghu. Design of correlation velocity measurement system based on virtual instrument[J]. Industrial Instrumentation & Automation, 2014, 0(2): 23-28 |
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| Authors: | LI Wentao QIAN Lei ZUO Hongfei LI Zhonghu |
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| Affiliation: | ( School of Information Engineering, Inner Mongolia University of Science and Technology, Inner Mongolia Baotou 014010, China) |
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| Abstract: | This design combined computer simulation to experiment research, and established a cross-correlation measurement system based on the virtual instrument PXI platform through the research of the composition, working principle and mathematical models of the cross-correlation measurement system for two-phase flow. Based on the cross-correlation function module and auto-correlation function module provided by the LabVIEW signal computing section, two-phase flow measurement systems were designed respectively using cross-correlation function, polar cross-correlation function and differential autocorrela-tion function. The calculation results were compared through simulations to verify the accuracy of the sys-tems. |
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| Keywords: | LabVIEW LabVIEW virtual instrument correlation velocity measurement |
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