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To lighten burden for Active Magnetic Bearing (AMB), Metal Rubber Ring (MRR) is introduced into the AMB system. Based on mixed-sensitivity H? control theory, the H? controller is designed and realized based on TMS320F2812DSP for the system. The influence of Weight Functions on dynamic characteristics of the system is investigated in this paper. The theoretical analysis and experimental results show that H? control can help the system operate over the first two bending critical speeds safely and stably.

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Booktitle: Proceedings of ISMB12