Fault-Tolerant Consensus Control for Discrete-Time Multi-Agent Systems: A Distributed Adaptive Sliding-Mode Scheme

Proportional integral observer‐based robust fault‐tolerant consensus for nonlinear two‐time‐scale‐agent systems with heterogeneous sensor faults

“…Remark 1. Unlike available studies related with the consensus issue for MASs on single time scale, [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28] the two-time-scales feature of agent is considered in this article, which will leads to numerical ill-conditioned problem as reported in Reference 30 if the related results in regular MASs are directly applied to our case.…”

“…As for MASs with actuator faults, many efficient fault-tolerant control strategies have been proposed. [13][14][15][16][17][18] And there are some fault-tolerant control methods for MASs with process faults, 19,20 Moreover, adaptive fault-tolerant consensus (FTC) algorithms are developed for nonlinear uncertain MASs subject to both actuator faults and process faults. 21,22 So far, only a few works consider the consensus of MASs with sensor faults.…”

“…For examples, for MASs with the communication faults, the incremental networked predictive control method 11 and the cloud‐based time‐varying formation predictive control method 12 are proposed. As for MASs with actuator faults, many efficient fault‐tolerant control strategies have been proposed 13–18 . And there are some fault‐tolerant control methods for MASs with process faults, 19,20 Moreover, adaptive fault‐tolerant consensus (FTC) algorithms are developed for nonlinear uncertain MASs subject to both actuator faults and process faults 21,22 .…”

“…In fact, the FTC problem for nonlinear two‐time‐scale‐agent systems with heterogeneous sensor faults and external disturbances has not been well addressed till now. The main difficulties are as follows:The two‐time‐scale properties of the considered MASs enable us difficult to directly apply the proposed FTC methods in References 11–28 for regular MASs to nonlinear two‐time‐scale‐agent systems. The nonlinear characteristic of each agent make it difficult to employ the FTC method for linear two‐time‐scale‐agent systems 45 to our case. Heterogeneous sensor faults contribute to the difficulty in information fusion and state estimation. …”

Event‐based privacy‐preserving security consensus of multi‐agent systems with encryption–decryption mechanism

“…A new adaptive pseudo‐PID SMC strategy has been proposed to address the fault‐tolerant consensus problem with integral quadratic constraints and unknown actuator efficiency effects in Reference 16. Guo et al 17 designed a novel fault‐tolerant distributed sliding mode controller with fault compensation to address the consensus problem of MASs with actuator faults. Given the impressive performance of the SMC method and its advantages, it is reasonable to explore the consensus control of MASs via the SMC strategy.…”