Comparison of different cryogenic control strategies via simulation applied to a superconducting magnet test bench at CERN

Cryogenic Engineering Conference 2017

材料科学;物理学

Arpaia, P.^1,2 ; Coppier, H.^3 ; De Paola, D.^1 ; Di Bernardo, M.^2,4 ; Guarino, A.^2 ; Luz Pedemonte, B.^3 ; Pezzetti, M.^1

CERN, Geneva, Switzerland^1

Department of Electrical Engineering and Information Technology, University of Naples Federico II, Naples, Italy^2

ESIEE, Amiens, France^3

Department of Engineering Mathematics, University of Bristol, Bristol, United Kingdom^4

关键词: Automatic approaches;    Control configuration;    Cryogenic test bench;    High field magnets;    Improving performance;    Industrial process controllers;    Multiple input/multiple outputs;    Operational constraints;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/278/1/012080/pdf
DOI  :  10.1088/1757-899X/278/1/012080

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Industrial process controllers for cryogenic systems used in test facilities for superconducting magnets are typically PIDs, tuned by operational expertise according to users' requirements (covering cryogenic transients and associated thermo-mechanical constraints). In this paper, an alternative fully-automatic solution, equally based on PID controllers, is proposed. Following the comparison of the operational expertise and alternative fully-automatic approaches, a new process control configuration, based on an estimated multiple-input/multiple-output (MIMO) model is proposed. The new MIMO model-based approach fulfils the required operational constraints while improving performance compared to existing solutions. The analysis and design work is carried out using both theoretical and numerical tools and is validated on the case study of the High Field Magnet (HFM) cryogenic test bench running at the SM18 test facility located at CERN. The proposed solution have been validated by simulation using the CERN ECOSIMPRO software tools using the cryogenic library (CRYOLIB [1]) developed at CERN.