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- W1887730422 abstract "In this paper, we develop new methods for the analysis of decentralized control systems and we apply them to formation control problems. The basic set-up consists of a system with multiple agents corresponding to the nodes of a graph whose edges encode the information that is available to the agents. We address the question of whether the information flow defined by the graph is sufficient for the agents to accomplish a given task. Formation control is concerned with problems in which agents are required to stabilize at a given distance from other agents. In this context, the graph of a formation encodes both the information flow and the distance constraints, by fixing the lengths of the edges. A formation is said to be rigid if it cannot be continuously deformed with the distance constraints satisfied; a formation is minimally rigid if no distance constraint can be omitted without the formation losing its rigidity. Hence, the graph underlying minimally rigid formation provides just enough constraints to yield a rigid formation. An open question we will settle is whether the information flow afforded by a minimally rigid graph is sufficient to insure global stability. We show that the answer is negative in the case of directed information flow. In this first part, we establish basic properties of formation control in the plane. Formations and the associated control problems are defined modulo rigid transformations. This fact has strong implications on the geometry of the space of formations and on the feedback laws, since they need to respect this invariance. We study both aspects here. We show that the space of frameworks of n agents is CP(n-2) x (0,infty). We then illustrate how the non-trivial topology of this space relates to the parametrization of the formation by inter-agent distances." @default.
- W1887730422 created "2016-06-24" @default.
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- W1887730422 date "2011-01-12" @default.
- W1887730422 modified "2023-09-23" @default.
- W1887730422 title "Decentralized Formation Control Part I: Geometric Aspects" @default.
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