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首页> 外文期刊>Acta astronautica >A feedback linearization control for the nonlinear 5-DOF flywheel suspended by the permanent magnet biased hybrid magnetic bearings
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A feedback linearization control for the nonlinear 5-DOF flywheel suspended by the permanent magnet biased hybrid magnetic bearings

机译：永磁偏置混合磁悬浮轴承悬挂的非线性五自由度飞轮的反馈线性化控制

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摘要

The dynamic model of the magnetic suspension flywheel (MSFW) whose rotor is suspended by the permanent magnet (PM) biased hybrid magnetic bearing is nonlinear, complicated and coupled because of the superposition and couple of the electromagnetic flux and PM flux. It is a challenge for the closed-loop controller design of the MSFW. In this paper, the M1M0 nonlinear dynamic model of such MSFW has been obtained using the equivalent magnetic flux circuit calculation and integrating the rotor dynamics. A nonlinear Luenberger observer has been designed to estimate the state variables of the system, and then the dynamic model has been exact linearized to linear and decoupled one using the state feedback. At last, a linear controller has been designed based on the obtained exact linearization model. The better abilities of decoupling and disturbance depression of the proposed controller compared to the controllers designed based on the Taylor linearization model are verified by simulations and experiments.
机译：由于电磁通量和永磁通量的叠加和耦合，其转子被永磁体（PM）偏置的混合磁轴承悬挂的磁悬浮飞轮（MSFW）的动力学模型是非线性，复杂和耦合的。这对于MSFW的闭环控制器设计是一个挑战。本文通过等效磁通电路计算并结合转子动力学，获得了此类MSFW的M1M0非线性动力学模型。设计了非线性Luenberger观测器以估计系统的状态变量，然后将动态模型精确地线性化为线性，并使用状态反馈将其解耦。最后，基于获得的精确线性化模型设计了线性控制器。通过仿真和实验验证了所提出的控制器与基于泰勒线性化模型设计的控制器相比具有更好的去耦和抑制干扰能力。

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  • 来源
    《Acta astronautica》 |2012年第octaanova期|p.131-139|共9页
  • 作者

    Wen Tong; Fang Jiancheng;

  • 作者单位

    School of Instrumentation Science and Opto-Electronics Engineering, Science and Technology on Inertial Laboratory, Beijing University of Aeronautics and Astronautics, Beijing, China;

    School of Instrumentation Science and Opto-Electronics Engineering, Science and Technology on Inertial Laboratory, Beijing University of Aeronautics and Astronautics, Beijing, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    magnetic bearing; nonlinear control; exact linearization; luenberger observer; state feedback;

    机译：电磁轴承非线性控制精确线性化;伦贝格观察者状态反馈;

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