System identification and robust anti-windup control for a helium liquifier

Jing Na*, Guang Li, Ryuji Maekawa, Luigi Serio

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

1 Citation (Scopus)

Abstract

This paper addresses the system identification and advanced control of a helium (He) liquifier supplying cooling power at liquid helium (LHe) temperatures (269 °C). To study the dynamic response to heat load variation, a He liquifier simulation model is utilized. The main focus is to regulate the discharge pressure of the compressor station to guarantee stable system operation. System identification is first conducted to obtain plant models, and a two degree of freedom H∞ controller is designed to achieve regulation. Moreover, saturation of the control valve is compensated via an anti-windup technique, which is suitable for regulation problem with disturbance rejection. The effectiveness of the proposed control designs is demonstrated by dynamical simulations in EcosimPro (EA International) software.

Original languageEnglish
Title of host publicationProceedings of the 2012 UKACC International Conference on Control, CONTROL 2012
Pages1007-1012
Number of pages6
DOIs
Publication statusPublished - 26 Nov 2012
Event2012 UKACC International Conference on Control, CONTROL 2012 - Cardiff, United Kingdom
Duration: 3 Sep 20125 Sep 2012

Conference

Conference2012 UKACC International Conference on Control, CONTROL 2012
CountryUnited Kingdom
CityCardiff
Period3/09/125/09/12

Keywords

  • anti-windup
  • disturbance rejection
  • Helium liquefier
  • robust control

Fingerprint Dive into the research topics of 'System identification and robust anti-windup control for a helium liquifier'. Together they form a unique fingerprint.

Cite this