Finite-time sliding-mode observer based distributed robust fault tolerant control for multi-agent systems against actuator and sensor faults

Zhengyu Ye, Ziquan Yu, Yuehua Cheng and Bin Jiang

International Journal of Systems Science, 2024, vol. 55, issue 4, 618-630

Abstract: The faults of actuators and sensors have adverse impacts on the distributed control of the multi-agent systems (MASs). This study addresses the problem of fault-tolerant control (FTC) for MAS subject to actuator and sensor faults. The descriptor approach is introduced to transform the MAS dynamics into a descriptor form, in which the actuator and sensor faults are integrated as components of the extended descriptor system state. A sliding mode-based unknown input observer is designed to realise finite-time fault diagnosis and state estimation for the transformed descriptor system. Furthermore, based on the estimation, a distributed robust FTC protocol is developed to guarantee the consensus of MAS against the actuator and sensor faults. Finally, simulations are conducted to validate the effectiveness of the proposed approach.

Date: 2024
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DOI: 10.1080/00207721.2023.2293482

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