| 采用数字混频技术的RLC测量仪设计 |
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| 引用本文： | 李庆,张娅.采用数字混频技术的RLC测量仪设计[J].计算机时代,2011(7):45-46. |
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| 作者姓名： | 李庆 张娅 |
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| 作者单位： | 1. 宜宾学院物理与电子工程学院,四川宜宾,644000
2. 宜宾职业技术学院电子信息工程系 |
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| 摘 要： | 首先介绍了用伏安法测量电阻、电容和电感参数的原理。根据用自由轴法分离出矢量电压的实部和虚部的原理,提出了使用数字混频技术替代传统相敏检波实现测量的思路,并给出了具体的实现方法。该方法可简化电路结构,提高系统稳定性和测量精度,具有很高的实用价值。
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| 关 键 词： | RLC测量 自由轴法 数字混频 FPGA |
Design of RLC Parameter Apparatus Using Digital Quadrature Mixing Technology |
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| LI Qing,ZHANG Ya.Design of RLC Parameter Apparatus Using Digital Quadrature Mixing Technology[J].Computer Era,2011(7):45-46. |
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| Authors: | LI Qing ZHANG Ya |
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| Affiliation: | 1.School of Physics and Electronic Engineering,Yibin University,Yibin,Sichuan 644000,China;2.Dept.of Electronic Information Engineering,Yibin Vocational and Technical College) |
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| Abstract: | Firstly the principle using volt-ampere method to measure resistance,capacitance and inductance parameters is introduced.Then according to the principle using free-axis method to separate the real and imaginary parts of vector voltage,we present the idea of using digital quadrature mixing circuit to replace traditional phase-sensitive detection circuit,and provide specific realization method.This method can simplify the circuit structure and improve the stability and measuring accuracy of the system,it has high practical value. |
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| Keywords: | RLC measurement Free-axis method Digital quadrature mixing FPGA |
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