TY - GEN
T1 - System identification and robust anti-windup control for a helium liquifier
AU - Na, Jing
AU - Li, G.
AU - Maekawa, R.
AU - Serio, L.
PY - 2012
Y1 - 2012
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?eid=2-s2.0-84869456785&partnerID=MN8TOARS
U2 - 10.1109/CONTROL.2012.6334770
DO - 10.1109/CONTROL.2012.6334770
M3 - Conference contribution
BT - Proceedings of the 2012 UKACC International Conference on Control, CONTROL 2012
ER -