Based on the requirement for high accuracy and large range DWM in China. The paper describes a design of the 2 MN dead-weight and build-up hybrid force standard machine, which would be established by Fujian Province Institute of Metrology, Fuzhou, China. The design has covered 1) main specifications; 2) main construction; 3) Finite Element Analysis (FEA) of key units, etc. It solves the technology defects of counter-force phenomenon existing in traditional DWM through rational weights combination and independent loading of each weights. Setting up a servo control method to ensure the loading speed of the weights is controllable, so as to enhance the accuracy of the machine. The build-up system in the DWM is designed to preload and calibrate the dynamometer less than class 0.05. Besides the auxiliary systems designed make the machine more intelligent and convenient.
展开▼
