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Distributed Fault-Tolerant Control of Large-Scale Systems: an Active Fault Diagnosis Approach

Boem, F; Alexander J., G; Davide M., R; Thomas, P; (2020) Distributed Fault-Tolerant Control of Large-Scale Systems: an Active Fault Diagnosis Approach. IEEE Transactions on Control of Network Systems , 7 (1) pp. 288-301. 10.1109/TCNS.2019.2913557. Green open access

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Abstract

The paper proposes a methodology to effectively address the increasingly important problem of distributed faulttolerant control for large-scale interconnected systems. The approach dealt with combines, in a holistic way, a distributed fault detection and isolation algorithm with a specific tube-based model predictive control scheme. A distributed fault-tolerant control strategy is illustrated to guarantee overall stability and constraint satisfaction even after the occurrence of a fault. In particular, each subsystem is controlled and monitored by a local unit. The fault diagnosis component consists of a passive set-based fault detection algorithm and an active fault isolation one, yielding fault-isolability subject to local input and state constraints. The distributed active fault isolation module - thanks to a modification of the local inputs - allows to isolate the fault that has occurred avoiding the usual drawback of controllers that possibly hide the effect of the faults. The Active Fault Isolation method is used as a decision support tool for the fault tolerant control strategy after fault detection. The distributed design of the tube-based model predictive control allows the possible disconnection of faulty subsystems or the reconfiguration of local controllers after fault isolation. Simulation results on a well-known power network benchmark show the effectiveness of the proposed methodology.

Type: Article
Title: Distributed Fault-Tolerant Control of Large-Scale Systems: an Active Fault Diagnosis Approach
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/TCNS.2019.2913557
Publisher version: https://doi.org/10.1109/TCNS.2019.2913557
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Control systems, Fault detection, Monitoring, Stability analysis, Fault tolerance, Fault tolerant systems, Computer architecture
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10073620
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