Experimental investigation of control updating period monitoring in industrial PLC-based fast MPC： Application to the constrained control of a cryogenic refrigerator

In this paper, a complete industrial validation of a recently published scheme for on-line adaptation of the control updating period in model predictive control is proposed. The industrial process that serves in the validation is a cryogenic refrigerator that is used to cool the supra-conductors inv...

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Bibliographic Details
Published in:Control theory and technology 2017-05, Vol.15 (2), p.92-108
Main Authors: Bonne, François, Alamir, Mazen, Bonnay, Patrick
Format: Article
Language:English
Subjects:
Complexity
Computational Intelligence
Conductors
Control
Control and Systems Theory
Engineering
Experimental nuclear reactors
Iterative methods
Mechatronics
Monitoring
Nuclear reactors
Optimization
Particle accelerators
PC控制
plc
Predictive control
Programmable logic controllers
Robotics
Systems Theory
低温冰箱
实验
工业过程
更新周期
模型预测控制
约束控制
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Summary:In this paper, a complete industrial validation of a recently published scheme for on-line adaptation of the control updating period in model predictive control is proposed. The industrial process that serves in the validation is a cryogenic refrigerator that is used to cool the supra-conductors involved in particle accelerators or experimental nuclear reactors. Two recently predicted features are validated： the first states that it is sometimes better to use less efficient （per iteration） optimizer if the lack of efficiency is overmcompensated by an increase in the updating control frequency. The second is that for a given solver, it is worth monitoring the control updating period based on the on-line measured behavior of the cost function.
ISSN:2095-6983
2198-0942
DOI:10.1007/s11768-017-6109-y