A distributed fault detection scheme in disturbed heterogeneous networked systems

• Published in: Nonlinear dynamics Vol. 107; no. 3; pp. 2519 - 2538
• Main Authors: Taoufik, Anass, Defoort, Michael, Djemai, Mohamed, Busawon, Krishna
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01.02.2022; Springer Nature B.V; Springer Verlag
• Subjects: Actuators; Automotive Engineering; Classical Mechanics; Communication; Control; Design; Dynamical Systems; Engineering; Engineering Sciences; Fault detection; Linear matrix inequalities; Mechanical Engineering; Multiagent systems; Neighborhoods; Noise; Original Paper; Sensors; Vibration; Networked systems; Unknown input observers; Fault detection and isolation; Linear matrix inequalities; Attack detection; Multi-agent systems
• ISSN: 0924-090X; 1573-269X
• DOI: 10.1007/s11071-021-07129-0

This paper deals with the problem of distributed fault detection and isolation in multi-agent systems with disturbed high-order dynamics subject to communication uncertainties and faults. Distributed finite-frequency mixed H - / H ∞ unknown input observers are designed to detect and distinguish actuator, sensor and communication faults. Furthermore, an agent is capable of detecting not only its own faults but also faults in its neighbouring agents. Sufficient conditions are then derived in terms of a set of linear matrix inequalities while adding additional design variables to reduce the conservatism. A numerical simulation is carried out in order to demonstrate the effectiveness of the proposed approach.