Study on Loading Weights Respectively and Counter-span Exchanging Weights of the Deadweight Force Standard Machine
Tang Chun-qian, Xuecheng Zhang, Li‐Juan Yu, Zhou Chang-ming · Jiliang xuebao · 2007
The counter-force phenomenon could occur in the process of uploading and/or downloading on a dead weight force standard machine in which the weights should be exchanged in counter-span process.The conception and method of loading weights in a unattached way are put forward.A loading weight way how to be drived is established.The movement rule of the loading device,force value change in the suspender,and the stability and efficiency of the machine are discussed.A uploading and/or downloading technology which has equal load and more load step with reasonable compounding and exchange of a few weights in the machine is studied.Theoretic analyse and experimental evaluation are given for minimizing and eliminating counter-force phenomenon while weights are exchanged in counter-span process on the machine.The experiment results show that the technical method presented are right and efficient.It offers a kind of new theoretic way and experimental basis for the development of primary force standard machine and force standard machine.There is more important significance for force measurement and measuring techniques.