Translated Title
Study on systemic error correction of build-up force standard device
Translated Abstract
The study of the build-up force standard device with super wide-range is the leading edge and hot spot in the field of force metrology.Correcting the systemic error has great importance for improving the accuracy of build-up force standard device.A correction method and process were proposed for the systemic error correction of the build-up force standard device.Four extrapolation methods of the systematic error were proposed,which were compared in the experiments of a 20 MN and three 300 kN build-up force standard devices with different structures.The best extrapolation method obtained from the experiments was determined and used in the force correction of a 60 MN build-up force standard device.The corrected 60 MN build-up force standard device was compared with the 30 MN build-up force standard machine in NPL and the force comparison relative deviation is less than ±0.06%,and the En is less than 1 . The study results show that in the extrapolation of the indication error equation before the correction of the build-up force standard device,it is better to adopt 1 st or 2nd order polynomial equation for the extrapolation to avoid the extrapolation result divergence due to the high equation order.Besides,in the structure design of the build-up force standard device,the linearity of the device should be optimized as much as possible to reduce the extrapolation error and improve the accuracy of the indication error extrapolation.The proposed method can effectively decrease the systematic error of the build-up force standard device and improve the force accuracy of the device.
Translated Keyword
build-up
error correction
force in super wide-range
force standard device
systematic error
Access Number
WF:perioarticalyqyb201611009
