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Time Coordination of Multiple UAVs over Switching Communication Networks with Digraph Topologies
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Time Coordination of Multiple UAVs over Switching Communication Networks with Digraph Topologies

Hyungsoo Kang, Hyung-Jin Yoon, Venanzio Cichella, Naira Hovakimyan and Petros Voulgaris
ArXiv.org
09/29/2021
DOI: 10.48550/arxiv.2109.14779
url
https://doi.org/10.48550/arxiv.2109.14779View
Preprint (Author's original)This preprint has not been evaluated by subject experts through peer review. Preprints may undergo extensive changes and/or become peer-reviewed journal articles. Open Access

Abstract

This paper presents a time-coordination algorithm for multiple UAVs executing cooperative missions. Unlike previous algorithms, it does not rely on the assumption that the communication between UAVs is bidirectional. Thus, the topology of the inter-UAV information flow can be characterized by digraphs. To achieve coordination with weak connectivity, we design a switching law that orchestrates switching between jointly connected digraph topologies. In accordance with the law, the UAVs with a transmitter switch the topology of their coordination information flow. A Lyapunov analysis shows that a decentralized coordination controller steers coordination errors to a neighborhood of zero. Simulation results illustrate that the algorithm attains coordination objectives with significantly reduced inter-UAV communication compared to previous work.

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