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Discrete-time nonlinear damping backstepping control with observers for rejection of low and high frequency disturbances

机译:具有观测器的离散时间非线性阻尼反推控制,可抑制低频和高频干扰

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摘要

A discrete-time backstepping control algorithm is proposed for reference tracking of systems affected by both broadband disturbances at low frequencies and narrow band disturbances at high frequencies. A discrete time DOB, which is constructed based on infinite impulse response filters is applied to compensate for narrow band disturbances at high frequencies. A discrete-time nonlinear damping backstepping controller with an augmented observer is proposed to track the desired output and to compensate for low frequency broadband disturbances along with a disturbance observer, for rejecting narrow band high frequency disturbances. This combination has the merit of simultaneously compensating both broadband disturbances at low frequencies and narrow band disturbances at high frequencies. The performance of the proposed method is validated via experiments.
机译:提出了一种离散时间反推控制算法,用于系统跟踪受低频宽带干扰和高频窄带干扰影响的系统。基于无限脉冲响应滤波器构造的离散时间DOB用于补偿高频下的窄带干扰。提出了一种具有增强观测器的离散时间非线性阻尼反推控制器,以跟踪所需的输出并与干扰观测器一起补偿低频宽带干扰,以抑制窄带高频干扰。这种组合的优点是可以同时补偿低频下的宽带干扰和高频下的窄带干扰。通过实验验证了该方法的性能。

著录项

  • 来源
    《Mechanical systems and signal processing》 |2018年第may1期|436-448|共13页
  • 作者单位

    School of Energy Systems Engineering, Chung-Ang University, Seoul 06974, Republic of Korea;

    Department of Mechanical Engineering, University of Connecticut, Storrs, CT 06269-3139, USA;

    School of Electrical and Computer Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea,Department of Mechanical Engineering, University of California, Berkeley, CA 94720-1740, USA;

    Division of Electrical and Biomedical Engineering, Hanyang University, Seoul 04763, Republic of Korea;

    Department of Mechanical Engineering, University of California, Berkeley, CA 94720-1740, USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Disturbance observer; Augmented observer; Discrete time control; Backstepping;

    机译:干扰观察员;增强观察者;离散时间控制;后退;

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