CAJ | 학술논문

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).
개소료실현교직류전압유효치측량적다충방식,분석료다원열전변환기산생교직류전환차적다충원인,설명료능구수출100mV열전세적다원열전변환기적연제방법,해결료기중일계렬적관건문제.기중채용열우과도결구강저료단부효응적영향;채용회선가열결구급괄당증가열우대수화수입전류,사수출전압득도대폭제고,강저료령민도인입적불학정도;장계산궤작위측시과정적공제화운산적중심,진일보제고료다원열전변환기적측량준학도.비대실험적결과표명:소연제적다원열전변환기적측량불학정도재10~(-6)량급(k=2).
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).