Figure - available from: Discrete Dynamics in Nature and Society
This content is subject to copyright. Terms and conditions apply.
Source publication
In this study, a leader-following consensus problem is investigated for a class of multi-agent systems with switching disconnected topologies. Different from the existing results on switching disconnected topologies, the multi-agent systems considered in this study are unstable. In this situation, the disconnected agents can disperse over some peri...
Citations
This paper deals with the consensus control problem for a class of multi-agent systems with state-dependent intermittent communication. The main contribution is that a novel state-dependent intermittent scheme is proposed, where whether the control protocols are implemented on the agents or not is related to system dynamics. In this communication scheme, by dividing the nonnegative real region into three subregions, the work time and the rest time are dependent on the pre-given subregions and a function value describing the error state. Based on this, a novel state-dependent intermittent control protocol can be designed and the sufficient conditions for the overall consensus can further be obtained. Compared to the existing time-dependent intermittent communication schemes, the proposed state-dependent one can tolerate more rest time. Finally, two simulation examples are developed to illustrate our results.
This paper deals with the coordinated output regulation problem of heterogeneous multi-agent systems under switching disconnected topologies. The main difficulty is that the outputs of some disconnected agents can inevitably deviate from the divergent trajectories of exosystems across some periods. To break through this challenge, we propose an interesting approach named piecewise time unit approach, in which each switching interval consists of several time units. By analyzing the trajectories of error states under the distributed observer-based control, the decreasing properties of switching behaviors can be obtained to overcome the divergence of error states. Based on this, the sufficient conditions guaranteeing the output regulation can be obtained. Finally, a simulation example is given to demonstrate our results.
This article deals with the adaptive consensus control problem for second-order nonlinear multi-agent systems under intermittent communications. The main contribution is that a novel event-dependent intermittent communication scheme is proposed, where the work time and the rest time can be changed according to the current states. This event-dependent intermittent communication is named Sun’s intermittent communication scheme. In this communication scheme, by dividing the nonnegative real region into three subregions, the work time and the rest time are decided by the events, which are produced by the pre-given subregions and a Lyapunov function. Then by developing a distributed adaptive protocol based on state estimates of neighboring agents, the overall consensus is achieved under the event-dependent intermittent communication. Compared with the existing related schemes, the proposed scheme can tolerate a larger intermittent rate. Finally, a simulation example is developed to verify the proposed approach.
