砝码表面状态预测及质量吸附修正研究动向

质量实物基准是所有基本量中唯一的实物基准,其缺点是容易受到环境的影响而造成质量的改变。总结了国内外计量院所对砝码表面状态预测方面的研究动向,指出了各国计量院所开展砝码表面状态预测研究的方向,包括:分析质量标准在"空气"和"真空"条件下传递时对质量标准造成的影响,建立砝码质量观测模型及吸附修正模型等。对砝码表面状态的研究和吸附修正技术的研究,最终可以提高质量测量的准确度,为即将到来的质量单位的重新定义研究打下技术基础。

Research direction on surface status prediction of weights and surface mass absorption correction

The mass benchmark is the only real benchmark among all fundamental physical SI units, and the drawback is that it''s easy to be affected by the environment, resulting in the change of the mass value. In this paper, recent research progresses at home and abroad on the surface status predication are summarized and the prediction research method on the surface status prediction of weights in institutes home and abroad is presented, including the influence analysis on the mass standards during transferring from vacuum to air and establishment the mass observation model and absorption correction model,etc. Through the research on the surface status of weights and absorption correction technology, the mass measurement accuracy can be ultimately enhanced, which lays a technical foundation for the upcoming redefinition of mass units'' research.