A Controller Design Method Considering the Influence of Packet Loss as a Control-dependent Disturbance

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  • Ogura Takashi
    Dept. of Electrical Engineering and Computer Science,Graduate School of Engineering, Nagoya University
  • Kobayashi Kentaro
    Institute of Materials and Systems for Sustainability, Nagoya University
  • Okada Hiraku
    Institute of Materials and Systems for Sustainability, Nagoya University
  • Katayama Masaaki
    Institute of Materials and Systems for Sustainability, Nagoya University

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  • パケットロスの影響を制御内容に依存する外乱として捉えた制御器の設計手法
  • パケットロス ノ エイキョウ オ セイギョ ナイヨウ ニ イソン スル ガイラン ト シテ トラエタ セイギョキ ノ セッケイ シュホウ

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<p>This paper proposes a controller design method to reduce deterioration of control quality such as instability and degradation of response performance (transient and steady-state responses, etc.) due to packet loss in wireless control systems. In our proposed method, the influence of packet loss to control systems is considered as a disturbance which is an external input causing deterioration of control quality. The proposed method can keep stability and reduce degradation of response performance even if packet loss occurs by considering the characteristics from a disturbance (an external input) to outputs in control design. In particular, this paper clarifies that the influence of packet loss can be modeled as a control-dependent disturbance, and proposes a controller design method that uses this dependency in controller design and does not depend on packet loss rate. Numerical simulation shows advantages of the proposed controller through comparisons with conventional controllers of existing researches.</p>

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