【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
【机 构】
：
清华大学电机工程与应用电子技术系,中国计量科学研究院电学与量子计量科学研究所,中国计量学院机电学院,
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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.
Jiao Erping balance program in our country to contact the poor magnetic energy and gravitational potential difference to establish the basis of the quantum quality, precision measurement of DC mutual inductance is one of the most critical technologies.To address this problem, in recent years were proposed low frequency AC extrapolation and Standard square wave compensation method to accurately obtain the mutual inductance of the DC value.Analysis of the mutual inductance frequency characteristics based on the introduction of the two methods of measurement principle and measurement results of the two methods were compared at the same time pointed out that the two methods Possible problems and corresponding countermeasures.The present preliminary experimental results show that the consistency of the two methods reaches 1.1 × 10-6.
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