Application of Robust Control to a Cryogenic Current Comparator

This paper describes the implementation of a digital robust controller in a cryogenic current comparator. The controller was designed applying H ∞ control theory and it was programmed in a home-made digital unit. Experimental comparisons of the new robust controller with the conventional analog inte...

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Bibliographic Details
Published inIEEE transactions on instrumentation and measurement Vol. 66; no. 6; pp. 1095 - 1102
Main Authors Bierzychudek, Marcos Eduardo, Gotz, Martin, Sanchez-Pena, Ricardo S., Iuzzolino, Ricardo, Drung, Dietmar
Format Journal Article
LanguageEnglish
Published New York IEEE 01.06.2017
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Control systems design
Control theory
Controllers
Current comparator
Current comparators
Current measurement
Electrical resistance measurement
H-infinity control
H∞ control
metrology
resistance measurement
Resistors
Robust control
Robustness
SQUIDs
Stability analysis
superconducting quantum interference device (SQUID)
Windings
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Summary:This paper describes the implementation of a digital robust controller in a cryogenic current comparator. The controller was designed applying H ∞ control theory and it was programmed in a home-made digital unit. Experimental comparisons of the new robust controller with the conventional analog integrator have showed a significant improvement of stability robustness and noise rejection in the system.
ISSN:0018-9456
1557-9662
DOI:10.1109/TIM.2017.2648898