论文标题
紧凑的千里平衡的磁性不确定性：调查
Magnetic Uncertainties for Compact Kibble Balances: An Investigation
论文作者
论文摘要
在修订后的国际单位体系（SI）中，千里平衡已成为实现群众单位千克的主要工具之一。大约十二个国家计量学院的研究人员正在积极地与能够权衡其名义价值从10克到1公斤的质量称重质量的石油平衡。将来，较小的千里平衡的设计将发挥更重要的作用。较小的千里平衡需要较小的磁铁系统，在这里我们研究了具有磁铁系统大小的系统不确定性的缩放。我们描述了三种磁效应的尺寸依赖性：线圈电感效应，轭非线性效应和热效应。分析表明，随着尺寸较小的相对系统效应越来越大。对于小磁铁，热效应变得占主导地位，因此，良好的热设计必须进行。
The Kibble balance has become one of the major instruments for realizing the mass unit, the kilogram, in the revised international system of units (SI). Researchers at about a dozen national metrology institutes are actively working with Kibble balances that are capable of weighing masses with nominal values from 10g to 1kg. In the future, the design of smaller Kibble balances will play a more significant role. Smaller Kibble balances require smaller magnet systems, and here we investigate the scaling of systematic uncertainties with the size of the magnet system. We describe the size dependence of three magnetic effects: the coil-inductance effect, the yoke nonlinear effect, and the thermal effect. The analysis shows that the relative systematic effects become increasingly larger with smaller sizes. For small magnets the thermal effects become dominant and, hence, a good thermal design is imperative.
