Open AccessEffect of motor characteristics on uncertainty of electric flow diverter with large pipe diameter
Author(s) -
Haiyang Li,
Xuejing Li,
Yuyang Chen,
Lijun Sun
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/892/1/012061
Subject(s) - servomotor , flow (mathematics) , acceleration , flow diverter , servo , reducer , mass flow , control theory (sociology) , simulation , computer science , mechanics , engineering , mechanical engineering , physics , medicine , surgery , control (management) , classical mechanics , artificial intelligence , aneurysm
Standard flow facility is a platform for performance test of flowmeters. Flow diverter is an essential component of liquid flow facility based on flying start-and-stop method, and is also a key equipment deciding the uncertainty of flow facility. In order to improve the accuracy of large flow facilities, the effects of acceleration performance and liquid shock force on the uncertainty of the flow diverter with large flow rate is analyzed. The actuation structure using servo motor and reducer to drive the flow diverter is put forward. The effect of step motor and servo motor on the uncertainty of the flow diverter is verified by real-flow test. The results of experiment indicate that servo motor driven flow diverter has faster transfer acceleration and more stable transfer process. The test results of transition time difference method show that the uncertainty of servo motor driven flow diverter is less than 0.003%.