|Fault-tolerant Consensus of Leader-following Multi-agent Systems Based on Distributed Fault Estimation Observer
Pu Yang*, Ben Ma, Yan Dong, and Jianwei Liu
International Journal of Control, Automation, and Systems, vol. 16, no. 5, pp.2354-2362, 2018
Abstract : "This paper is concerned with the fault-tolerant consensus control problem for leader-following multiagent
systems with actuator faults and external disturbance. Firstly, by employing the relative output estimation
errors with respect to the corresponding neighbours and the leader, a distributed fault estimation observer is constructed
for each follower and the established global estimation error system is proven to be asymptotically stable.
Secondly, based on the obtained fault estimation, the active fault-tolerant consensus control protocol for each follower
is proposed with the utilization of the relative output measurements rather than the state of the systems. Under
this control protocol, the actuator faults can be compensated and the influence of disturbance can be eliminated as
well. Moreover, it is worth noticing that the process of designing the fault estimation observer and the fault-tolerant
controller is separated and their performances are considered simultaneously to simplify the design procedures.
Finally, an illustrative example is presented to demonstrate the applicability and the effectiveness of the obtained
Active fault-tolerant control, consensus, fault estimation observer, multi-agent systems.