TY - JOUR
T1 - Improving the rotational and transient performance of magnetic bearings by the H∞ DIA control
AU - Namerikawa, Toru
AU - Seto, Hiroki
PY - 2005/9/1
Y1 - 2005/9/1
N2 - This paper deals with an application of H∞ control attenuating initial-state uncertainties to the magnetic bearing and examines the H∞ control problem, which treats a mixed Disturbance and an Initial state uncertainty Attenuation (DIA) control. The mixed H ∞ DIA problem supplies H∞ controls with good transients and assures H∞ controls of robustness against initial-state uncertainty. On the other hand, active magnetic bearings allow contract-free suspension of rotors and they are used for various industrial purposes. We derive a mathematical model of the magnetic bearing which has complicated rotor dynamics and nonlinear magnetic property. Then we apply this proposed H∞ DIA control for the magnetic bearing, and design a robust H∞ controller both for exogenous disturbances and for initial state uncertainties of the plant. Experimental results show that the proposed robust control approach is effective for improving rotational performance, transient response and robust performance.
AB - This paper deals with an application of H∞ control attenuating initial-state uncertainties to the magnetic bearing and examines the H∞ control problem, which treats a mixed Disturbance and an Initial state uncertainty Attenuation (DIA) control. The mixed H ∞ DIA problem supplies H∞ controls with good transients and assures H∞ controls of robustness against initial-state uncertainty. On the other hand, active magnetic bearings allow contract-free suspension of rotors and they are used for various industrial purposes. We derive a mathematical model of the magnetic bearing which has complicated rotor dynamics and nonlinear magnetic property. Then we apply this proposed H∞ DIA control for the magnetic bearing, and design a robust H∞ controller both for exogenous disturbances and for initial state uncertainties of the plant. Experimental results show that the proposed robust control approach is effective for improving rotational performance, transient response and robust performance.
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M3 - Conference article
AN - SCOPUS:23944491250
SN - 0743-1619
VL - 4
SP - 2907
EP - 2912
JO - Proceedings of the American Control Conference
JF - Proceedings of the American Control Conference
T2 - 2005 American Control Conference, ACC
Y2 - 8 June 2005 through 10 June 2005
ER -