There is an increasing demand for the large-scale force standard machine with a capacity higher than 20 MN. In this paper, the calibration method and procedure were developed according to a proposed traceability route and used to calibrate a 60 MN force standard machine. One 7.5 MN and six 20 MN force transducers and two 60 MN build-up systems were used as the force transfer standards. Uncertainty models of the build-up system and force standard machine were also developed. The calibration results show that it is possible to calibrate a 60 MN build-up force standard machine with a relative expanded measurement uncertainty smaller than 0.035% (k = 2) by two build-up systems, which were compared with themselves. The 60 MN build-up system, which worked as the force transfer standard, should be calibrated to confirm its systematic error and corrected by the error. Its uncertainty also could be estimated independently by the developed model.

中文翻译：

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通过组合式力传递系统在最大60 MN的最大范围内对力标准机进行校准

对于容量大于20 MN的大型测力标准机的需求不断增长。在本文中，根据建议的可追溯路线开发了校准方法和程序，并将其用于校准60 MN力标准机。一个7.5 MN和六个20 MN的力传感器和两个60 MN的构建系统被用作力传递标准。还建立了组合系统和力标准机的不确定性模型。校准结果表明，可以校准60 MN累积力标准机，其相对扩展测量不确定度小于0.035％（k = 2）由两个构建系统进行比较。作为力传递标准的60 MN堆积系统应进行校准，以确认其系统误差并通过该误差进行校正。它的不确定性也可以由开发的模型独立地估计。