Identification and Control of a Cryogenic Current Comparator Using Robust Control Theory

This paper presents the model identification of a cryogenic current comparator (CCC). A dynamic model set is obtained and compared with the experimental data in order to provide a realistic dynamical behavior of the system. To improve the performance of the CCC, an H ∞ optimal controller is designed...

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Bibliographic Details
Published in:IEEE transactions on instrumentation and measurement 2015-12, Vol.64 (12), p.3451-3457
Main Authors: Bierzychudek, Marcos Eduardo, Sanchez-Pena, Ricardo S., Tonina, Alejandra
Format: Article
Language:English
Subjects:
Cryogenic electronics
Current comparator
Electrical resistance measurement
H infinity control
H∞ control
Metrology
resistance measurement
Robust control
SQUIDs
superconducting quantum interference device (SQUID)
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Summary:This paper presents the model identification of a cryogenic current comparator (CCC). A dynamic model set is obtained and compared with the experimental data in order to provide a realistic dynamical behavior of the system. To improve the performance of the CCC, an H ∞ optimal controller is designed based on this model set. In this framework, a robust stability guarantee is provided and the simulations of the closed-loop system illustrate the performance and robustness improvements.
ISSN:0018-9456
1557-9662
DOI:10.1109/TIM.2015.2459472