| 高准确度的超低频交流电压表设计 |
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| 引用本文： | 何梓滨.高准确度的超低频交流电压表设计[J].宇航计测技术,2011,31(3):34-39. |
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| 作者姓名： | 何梓滨 |
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| 作者单位： | 北京东方计量测试研究所,北京,100086 |
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| 摘 要： | 分析了超低频交流电压信号的测量方法,设计了基于采样计算方式的超低频交流电压测量方案。设计了以高速高精度A/D转换器和高性能DSP处理器为核心的超低频交流电压表硬件电路,设计了基于线性插值的非同步采样同步化算法,设计了基于复合梯形求积公式的有效值算法。对所研制的超低频交流电压表进行了量值溯源与校准测试,测试结果表明所研制的超低频交流电压表测量频率下限达到了0.001Hz,测量不确定度优于0.01%。
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| 关 键 词： | 超低频 交流电压表 非同步采样 同步化算法 DSP |
Design of High Accuracy Ultra-Low-Frequency AC Voltage Meter |
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| HE Zi-bin.Design of High Accuracy Ultra-Low-Frequency AC Voltage Meter[J].Journal of Astronautic Metrology and Measurement,2011,31(3):34-39. |
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| Authors: | HE Zi-bin |
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| Institution: | HE Zi-bin(Beijing Orient Institute for Measurement & Test,Beijing 100086) |
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| Abstract: | This paper analyzed the measuring methods of the ultra-low-frequency AC voltage signal,and designed a measuring method based on sampling-calculation.Designed the hardware circuit structure of the ultra-low-frequency AC voltage meter based on high-speed precision A/D converter and high-performance DSP processor,and designed the synchronization algorithm for non-synchronous sampling based on linear interpolation,and designed the RMS algorithm based on the composite trapezoidal quadrature formula.Developed the... |
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| Keywords: | Ultra-Low-Frequency(ULF) AC voltage meter Non-synchronous sampling Synchronization algorithm DSP |
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