摘  要：简述10 MN叠加式力标准机的工作原理，通过对横梁、加载系统、液压系统、控制系统以及测试系统进行创新设计，并采用新的力值加载结构和满足称重传感器、标准测力仪的测试系统，成功研制高精度10 MN叠加式力标准机。该10 MN叠加式力标准机示值重复性不大于0.02%，力值误差在±0.05%内，相对扩展不确定度优于0.1%（k=2）。
关键词：叠加式力标准机；大力值；示值重复性；力值误差；相对扩展不确定度
中图分类号：TP212.1+2；TB931；TM930.114；TP274.+2    文献标志码：A    文章编号：1674-5124（2013）05-0024-04
Preparation of 10 MN build-up force standard machine
HU Shao-cheng1， CHEN Qin2， LIU Yu-cheng3
（1. Hangzhou Tansite Instrument and Equipment Co.Ltd.，Hangzhou 311106，China；
2. Zhejiang Test Academy of Quality and Technical Supervision，Hangzhou 310013，China；
3. Zhejiang University，Hangzhou 310000，China）
Abstract: The working principle of 10 MN build-up force standard machine（BM） is introduced in the paper. Innovative designs have been done on crossbeam， loading system， control system and testing system； besides， new constructors to load force， and a testing system which meet the weighing sensor and force standard machine have been taken to ensure the accuracy of the whole system so that the 10 MN build-up force standard machine can be successfully manufactured. The performance of the 10 MN BM is measured. The testing results indicate that the indication repeatability is not bigger than 0.02%， force value error is between-0.05% and +0.05%， and the relative expanded uncertainty （k=2） is smaller than 0.1%.
Key words: build-up force standard machine（BM）； great force； indication repeatability； force value error； relative expanded uncertainty