Abstract In the face of magnetic bearing rotor system multivariable, nonlinear, strong coupling control problems, a novel control decoupling method based on inverse system state feedback decoupling theory for the five degree of freedom of active magnetic bearing is presented. It solved the problem of ignoring the limitation of control parameters in conventional control methods. In this paper, the rigid body dynamics model of magnetic suspension rotor is established and the linearization is carried out. In this study, a decoupling pseudo-linear system is constituted by cascading the α-order inverse system based on the state-feedback with the original system. Moreover, in order to improve the robustness of the whole system and reject the influence of the un-modeled dynamics, the internal model controller is designed to synthesize the whole system. Both simulations and experiments demonstrate the effectiveness in decoupling of magnetically-levitated rotor system, and the disturbance rejection of proposed control scheme can be enhanced compared with un-decoupled control schemes.

中文翻译：

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基于α阶逆系统的五自由度磁轴承状态反馈解耦控制

摘要 针对磁轴承转子系统的多变量、非线性、强耦合控制问题，提出了一种基于逆系统状态反馈解耦理论的主动磁轴承五自由度控制解耦新方法。解决了传统控制方法忽略控制参数限制的问题。本文建立了磁悬浮转子刚体动力学模型并进行了线性化。本研究将基于状态反馈的α阶逆系统与原系统级联，构成解耦伪线性系统。此外，为了提高整个系统的鲁棒性和拒绝未建模动力学的影响，设计了内模型控制器来综合整个系统。