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基于LabVIEW的数字式相位差测量仪的设计
引用本文:王莉,杨鹏.基于LabVIEW的数字式相位差测量仪的设计[J].仪表技术,2009(11):45-47,50.
作者姓名:王莉  杨鹏
作者单位:扬州大学能源与动力工程学院,江苏扬州225009
摘    要:介绍3种基于虚拟仪器的相位差测量方法:过零法、频谱分析法(FFT)、相关分析法。通过试验数据,分析了3种方法的误差来源及适用情况。与传统的硬件电路相位差测量方法相比,基于LabVIEW的数字式相位差测量仪具有测量精度高、设计灵活、电路简单等特点。

关 键 词:LabVIEW  相位差  过零法  频谱分析法  相关分析法

Design of Digital Phase Difference Measurement Instrument Based on LabVIEW
WANG Li,YANG Peng.Design of Digital Phase Difference Measurement Instrument Based on LabVIEW[J].Instrumentation Technology,2009(11):45-47,50.
Authors:WANG Li  YANG Peng
Affiliation:(School of Energy and Power Engineering, Yangzhou University, Yangzhou 225009, China)
Abstract:In this paper, three methods such as zero across and correlation analysis and FFT are introduced to measure phase difference based on virtual instrument. The source of measuring errors and the application scope of these three methods are analyzed through experiments. Compared with traditional ways, the instrument of digital phase difference measurement based on LabVIEW has advantages of good accuracy, flexible design and brief circuit.
Keywords:LabVIEW
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