Consensus of Discrete-Time Linear Multi-Agent Systems with Observer-Type Protocols
Consensus of Discrete-Time Linear Multi-Agent Systems with Observer-Type Protocols
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DOI:
10.3934/dcdsb.2011.16.489
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发表时间:
2011-02
期刊:
影响因子:
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通讯作者:
Zhongkui Li;Z. Duan;Guanrong Chen
中科院分区:
文献类型:
--
作者:
Zhongkui Li;Z. Duan;Guanrong Chen
This paper concerns the consensus of discrete-time multi-agent systems with linear or linearized dynamics. An observer-type protocol based on the relative outputs of neighboring agents is proposed. The consensus of such a multi-agent system with a directed communication topology can be cast into the stability of a set of matrices with the same low dimension as that of a single agent. The notion of discrete-time consensus region is then introduced and analyzed. For neurally stable agents, it is shown that there exists an observer-type protocol having a bounded consensus region in the form of an open unit disk, provided that each agent is stabilizable and detectable. An algorithm is further presented to construct a protocol to achieve consensus with respect to all the communication topologies containing a spanning tree. Moreover, for the case where the agents have no poles outside the unit circle, an algorithm is proposed to construct a protocol having an origin-centered disk of radius $\delta$ ($0<\delta<1$) as its consensus region. Finally, the consensus algorithms are applied to solve formation control problems of multi-agent systems.