摘要
介绍了国际单位制(SI)基本单位的量纲方程、新定义,以及中国计量研究院在质量单位研究的最新进展.阐明了"能量天平"方案核心中M/T的量纲是欧姆.建立了互感测量装置,自行研制的低频数字补偿器法.模型试验结果表明:测量不确定度主要来自被测标准互感的不稳定性.其不确定度为1.5×10-3,说明了不确定度主要来源于测量位置准确性,采用激光系统后有可能得到改善.该项研究的重要意义在于研究和验证一些国际上已有计量方案,而不是简单地模仿之.
Dimension equations and new definitions of the basic units of the International System （SI） were introduced. The new development of mass unit in the National Institute of Metrology of China was described. The dimension of M/T in the ＂ME Balance＂ is Ohm. A device of the mutual inductance measurement was constructed. A method of the low frequency digital compensator was self made. The uncertainty of the model test result, 1.5 × 10^-3, indicated that the measurement uncertainty was mainly originated from the instability of the standard mutual inductance tested and the veracity of measurement positions. When the laser testing system was used, it may be improved. It is important that the ＂ME Balance＂ is one of the measurement projects in the international researches, but not just an imitation of them.
出处
《中国计量学院学报》
2009年第1期1-7,共7页
Journal of China Jiliang University
关键词
计量学
计量技术
测试技术
metrology
measurement technology
testing technology
