|本期目录/Table of Contents|

 用于焦耳天平的两种直流互感测量方法的比较分析(PDF)

《纳米技术与精密工程》[ISSN:1672-6030/CN:12-1351/O3]

期数:
2012年4期
页码:
359-364
栏目:
精密测量
出版日期:
2012-07-15

文章信息/Info

Title:
 Comparisons of Two Measurement Methods for DC Value of Mutual Inductance in Joule Balance
作者:
 兰江12 李正坤2 贺青2 王刚3 李世松12 韩冰2
 (1.清华大学电机工程与应用电子技术系, 北京100084;
2.中国计量科学研究院电学与量子计量科学研究所, 北京100013;
3.中国计量学院机电学院, 杭州310018)
Author(s):
 LAN Jiang12 LI Zhengkun2 HE Qing2 WANG Gang3 LI Shisong12 HAN Bing2
(1.Department of Electrical Engineering, Tsinghua University, Beijing 100084, China;
2. Institute of Electrical and Quantum, National Institute of Metrology, Beijing 100013, China;
3. College of Mechatronics Engineering, China Jiliang University, Hangzhou 310018, China)
关键词:
 焦耳天平互感直流值低频交流外推法标准方波补偿法
Keywords:
 Joule balance DC value of mutual inductance low-frequency-extrapolation method standard-square-wave compensation method
分类号:
-
DOI:
-
文献标识码:
A
摘要:
 我国焦耳天平方案联系磁能量差和重力势能差来建立量子质量基准,直流互感的精密测量是此方案最为关键的技术之一.针对这一难题,近几年分别提出了低频交流外推法和标准方波补偿法来精确得到互感的直流值.在分析互感频率特性的基础上分别介绍了两种方法的测量原理,并对两种方法的测量结果进行了比较,同时分析指出了两种方法可能存在的问题和相应对策.目前初步实验结果表明,两种方法的一致性达到1.1×10-6.
Abstract:
 Joule balance in national institute of metrology (NIM) relates the difference of magnetic energy and the difference of gravitational potential energy to establish the quantum mass standard. Measuring the DC value of mutual inductance precisely is one of key technologies in Joule balance. In recent years, several methods such as low-frequency-extrapolation method and standard-square-wave compensation method to obtain the DC value of mutual inductance are proposed. The analysis of the frequency characteristic of mutual inductance and the principles of two measurement methods are provided in this paper. Besides, the comparisons are made through alternate measurements, and further considerations for the two methods are pointed out. Preliminary experimental results show that the deviation between the two methods is only 1.1×10-6.

参考文献/References

备注/Memo

备注/Memo:
更新日期/Last Update: 2012-11-14