On H,10.1016/j.automatica.2011.01.054,Automatica,Zhongkui Li,Zhisheng Duan,Guanrong Chen

On H  
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This paper addresses the distributed H2 and H∞ control problems for multi-agent systems with linear or linearized dynamics. An undirected multigraph with loops is used to represent the communication topology of a multi-agent network. A distributed controller is designed, based on the relative states of neighboring agents and a subset of absolute states of the networked agents. The notions of H∞ and H2 performance regions are introduced and analyzed, respectively. A necessary and sufficient condition for the existence of a controller yielding an unbounded H∞ performance region is derived. A multi-step procedure for suboptimal H∞ controller synthesis is presented. It is also shown that the H∞ performance limit of the network under the distributed controller is equal to the minimal H∞ norm of a single agent achieved by using the state feedback controller. It is finally shown that, contrarily to the H∞ case, the H2 performance limit scales with the number of agents in the network.
Journal: Automatica , vol. 47, no. 4, pp. 797-803, 2011
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