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Finite-Time Unknown Input Observer-Based Distributed Fault Diagnosis for Multi-agent Systems with Disturbances

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Abstract

In this study, based on the finite-time unknown input observer (FT-UIO), the problem of distributed fault diagnosis (FD) for multi-agent systems (MAS) with actuator faults and disturbances is investigated. Firstly, using the communication topology and local information, the global multi-agent system dynamics are represented with respect to a certain agent. Then, in order to construct a FT-UIO at the selected agent, the system will be decomposed into three subsystems after coordinate transformation. Furthermore, constituted by two distinct observers, the FT-UIO is designed to converge in a pre-assigned finite time, which is chosen as the time delay of the observers. With the state estimation obtained from the FT-UIO in the selected agent, a FD algorithm is also proposed to diagnose the faults occurred in its neighbor agents. Finally, simulation results are presented to illustrate the effectiveness and advantages of the proposed FT-UIO-based distributed FD scheme for MAS.

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Authors and Affiliations

  1. College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, China

    Xingxing Chen, Ke Zhang & Bin Jiang

Authors
  1. Xingxing Chen
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  2. Ke Zhang
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  3. Bin Jiang
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Corresponding author

Correspondence to Ke Zhang.

Additional information

This work was supported in part by the National Natural Science Foundation of China (61673207, 61773201, 61533008), in part by Qing Lan Project of Jiangsu Province, in part by the Fundamental Research Funds for the Central Universities (NJ20170005, NJ20170010), in part by A Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions.

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Chen, X., Zhang, K. & Jiang, B. Finite-Time Unknown Input Observer-Based Distributed Fault Diagnosis for Multi-agent Systems with Disturbances. Circuits Syst Signal Process 37, 4215–4233 (2018). https://doi.org/10.1007/s00034-018-0764-1

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  • DOI: https://doi.org/10.1007/s00034-018-0764-1

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