| Author Name | Affiliation | | Xiaofei Lu | Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China | | Zhiwei Zhou | Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China | | Ming Zhuang | Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China | | Lilong Qiu | Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China |
|
| Abstract: |
| In order to investigate dynamic behaviors of a 500W@4.5K helium refrigerator,the process simulator has been completed. The cryogenic process model is described and main components are customized.The real-time communication between the process model and the control system has been achieved.Compared with the preliminary experimental data, the errors of temperatures during the process of 300 K-80 K are less than 10%. The process model is validated to predict the cool-down process very well. The controller parameters are tuned in simulation and applied to the actual refrigerator suitably.Based on the dynamic simulation, the operation of Joule-Thomson(JT) by pass valve has been optimized. And the cool-down process from 300 K to 4.5 K has been simulated under the control programs . Simulation results indicate that this dynamic simulator based on actual control architecture is available to process control and operation optimization for the helium refrigerators. |
| Key words: Helium refrigerator process simulation controller tuning operation optimization virtual commissioning |
| DOI：10.11916/j.issn.1005-9113.2016.04.003 |
| Clc Number:TB69; TL62[KG*2] |
| Fund: |
