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Edges' Riemannian energy analysis for synchronization of multi-agent nonlinear systems over undirected weighted graphs

Vincent Andrieu, Daniele Astolfi, Alexandre Cellier-Devaux

Abstract

In this note we investigate the problem of global exponential synchronization of multi-agent systems described by nonlinear input affine dynamics. We consider the case of networks described by undirected connected graphs possibly without leader. We present a set of sufficient conditions based on a Riemannian metric approach in order to design a state-feedback distributed control law. Then, we study the convergence properties of the overall network. By exploiting the properties of the edge Laplacian we construct a Lyapunov function that allows to conclude global exponential synchronization of the overall network.

Edges' Riemannian energy analysis for synchronization of multi-agent nonlinear systems over undirected weighted graphs

Abstract

In this note we investigate the problem of global exponential synchronization of multi-agent systems described by nonlinear input affine dynamics. We consider the case of networks described by undirected connected graphs possibly without leader. We present a set of sufficient conditions based on a Riemannian metric approach in order to design a state-feedback distributed control law. Then, we study the convergence properties of the overall network. By exploiting the properties of the edge Laplacian we construct a Lyapunov function that allows to conclude global exponential synchronization of the overall network.

Paper Structure

This paper contains 6 sections, 2 theorems, 31 equations, 2 figures.

Key Result

Lemma 1

Consider an undirected graph (not necessarily connected) with $N$ agents and $Q$ edges. Let $W$, resp. $E$, resp. $L=EWE^\top$, resp. $L_e=E^\top E W$, be the weight matrix, the incidence, Laplacian and edge Laplacian matrix. Then there exists a matrix $\Upsilon \in {\mathbb R}^{Q \times Q}$ verifyi

Figures (2)

  • Figure 1: Incidence matrix $E$.
  • Figure 2: Synchronization of Lorentz's oscillators

Theorems & Definitions (2)

  • Lemma 1
  • Theorem 1