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首页> 外文期刊>IEEE Transactions on Control Systems Technology >A sliding mode observer and controller for stabilization of rotational motion of a vertical shaft magnetic bearing
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A sliding mode observer and controller for stabilization of rotational motion of a vertical shaft magnetic bearing

机译：用于稳定垂直轴磁轴承旋转运动的滑模观察器和控制器

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摘要

In this paper we present the development of (1) a sliding mode controller for stabilization of the rotational dynamics of a vertical shaft magnetic bearing in addition to providing tracking capabilities, and (2) a sliding mode observer for state and disturbance estimation. Rotor imbalance causes sinusoidal disturbances which necessitates robustness inherent in sliding mode observers and controllers. The sliding mode control design includes (1) the definition of an equilibrium manifold upon which the magnetic bearing has the desired stability and tracking properties, and (2) the control selection from one of several potential control strategies for driving the system to this manifold and maintaining it there. A sliding mode observer strategy is proposed to estimate derivatives of measured signals in the presence of unmatched disturbances by filtering discontinuous approximations of the derivatives. Simulation results demonstrate the utility and robustness of a sliding mode controller and observer for stabilizing the rotational dynamics of a magnetic bearing.
机译：在本文中，我们介绍了（1）滑模控制器的发展，该控制器除了提供跟踪功能之外，还用于稳定垂直轴磁轴承的旋转动力学；以及（2）滑模观察器的状态和扰动估计。转子不平衡会引起正弦波干扰，因此需要滑模观测器和控制器固有的鲁棒性。滑模控制设计包括（1）平衡歧管的定义，电磁轴承在该歧管上具有所需的稳定性和跟踪特性，以及（2）从几种可能的控制策略之一中进行控制选择，以将系统驱动到该歧管，以及在那里维护它。提出了一种滑模观测器策略，通过滤除导数的不连续近似值，在不匹配干扰存在的情况下估计测量信号的导数。仿真结果证明了滑模控制器和观测器用于稳定磁性轴承旋转动力学的实用性和鲁棒性。

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