| 交直流电压转换标准的研制 |
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| 引用本文： | 黄小钉,焦昶,王高超. 交直流电压转换标准的研制[J]. 宇航计测技术, 2009, 29(5): 50-54 |
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| 作者姓名： | 黄小钉 焦昶 王高超 |
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| 作者单位： | 1. 北京东方计量测试研究所,北京,100086
2. 北京师范大学,北京,100875 |
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| 摘 要： | 介绍了实现交直流电压有效值测量的多种方式，分析了多元热电变换器产生交直流转换差的多种原因，说明了能够输出100mV热电势的多元热电变换器的研制方法，解决了其中一系列的关键问题。其中采用热偶过渡结构降低了端部效应的影响；采用回线加热结构及适当增加热偶对数和输入电流，使输出电压得到大幅提高，降低了灵敏度引入的不确定度；将计算机作为测试过程的控制和运算的中心，进一步提高了多元热电变换器的测量准确度。比对实验的结果表明：所研制的多元热电变换器的测量不确定度在10^-6量级（k=2）。
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| 关 键 词： | 交流电压 交直流转换 热电变换器 标准器 |
Research of AC/DC Thermal Transfer Standard |
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| HUNAG Xiao-ding,JIAO Chang,WANG Gao-chao. Research of AC/DC Thermal Transfer Standard[J]. Journal of Astronautic Metrology and Measurement, 2009, 29(5): 50-54 |
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| Authors: | HUNAG Xiao-ding JIAO Chang WANG Gao-chao |
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| Affiliation: | HUNAG Xiao-ding.JIAO Chang. WANG Gao-chao, (1. Beijing Orient Institute of Measurement ＆ Test,2. Beijing Normal University) |
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| Abstract: | Some measurement methods of AC/ DC voltage transfer are introduced. Many causes of the error and deflection of the AC/DC thermal transfer are analyzed. The technique method of 100mV thermoelectric output with AC/DC thermal transfer is shown. Some key techniques are introduced such as increasing the output thermoelectric voltage and thermal loop designing. Experiments prove that the measurement uncertainty of our AC/DC thermal transfer is about 10~(-6)(k =2). |
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| Keywords: | AC Voltage AC/DC transfer Thermal transfer Standard |
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