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Parabolic PDE-based multi-agent formation control on a cylindrical surface

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ABSTRACT This paper considers the modelling and control design of the multi-agent systems in the 3-D space. The communication graph of the agents is a mesh-grid 2-D cylindrical surface. Different… Click to show full abstract

ABSTRACT This paper considers the modelling and control design of the multi-agent systems in the 3-D space. The communication graph of the agents is a mesh-grid 2-D cylindrical surface. Different from most existing literatures, where the agents are modelled by ordinary differential equations (ODEs), we treat the agents as a continuum in this paper. More specifically, we model the collective dynamics of the agents by two reaction–advection–diffusion 2-D partial differential equations (PDEs). The PDE states represent the agent positions, and the equilibria correspond to possible formation manifolds. These PDEs can be open-loop unstable, and the boundary stabilisation problem of the PDEs on the cylindrical surface is solved using the backstepping method. An all-explicit observer-based output control scheme is constructed, which is distributed in the sense that each agent only needs local information. Closed-loop exponential stability in the L 2, H 1, and H 2 spaces is proved for the controller designs. Numerical simulations illustrate the effectiveness of our proposed approach.

Keywords: control; formation; multi agent; cylindrical surface; parabolic pde

Journal Title: International Journal of Control
Year Published: 2019

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