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Dynamic controllers for column synchronization of rotation matrices: A QR-factorization approach

Accepted version
Peer-reviewed

Type

Article

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Authors

Thunberg, J 
Markdahl, J 
Gonçalves, J 

Abstract

In the multi-agent systems setting, this paper addresses continuous-time distributed synchronization of columns of rotation matrices. More precisely, k specific columns shall be synchronized and only the corresponding k columns of the relative rotations between the agents are assumed to be available for the control design. When one specific column is considered, the problem is equivalent to synchronization on the (d − 1)-dimensional unit sphere and when all the columns are considered, the problem is equivalent to synchronization on SO(d). We design dynamic control laws for these synchronization problems. The control laws are based on the introduction of auxiliary variables in combination with a QR-factorization approach. The benefit of this QR-factorization approach is that we can decouple the dynamics for the k columns from the remaining d − k ones. Under the control scheme, the closed loop system achieves almost global convergence to synchronization for quasi-strong interaction graph topologies.

Description

Keywords

Multi-agent systems, Attitude synchronization, Consensus algorithms, Sensor networks, Network topologies

Journal Title

Automatica

Conference Name

Journal ISSN

0005-1098
1873-2836

Volume Title

93

Publisher

Elsevier BV