Improving the transient response of magnetic bearings by the H/sub ∞/ DIA control
説明
This paper deals with an application of H/sub /spl infin// control attenuating initial-state uncertainties to the magnetic bearing and examines the H/sub /spl infin// control problem, which treats a mixed disturbance and an initial state uncertainty attenuation (DIA) control. The mixed H/sub /spl infin// DIA problem supplies H/sub /spl infin// controls with good transients and assures H/sub /spl infin// 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/sub /spl infin// DIA control for the magnetic bearing, and design a robust H/sub /spl infin// 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 transient response and robust performance.
収録刊行物
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- Proceedings of the 2004 IEEE International Conference on Control Applications, 2004.
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Proceedings of the 2004 IEEE International Conference on Control Applications, 2004. 2 1130-1135, 2005-03-07
IEEE