Reactive model for autonomous vehicles formation following a mobile reference

Freitas, Vander L. S.; Sousa, Fabiano Luís de; Macau, Elbert E. N.

doi:10.1016/j.apm.2018.04.011

Cited by 7 publications

(3 citation statements)

References 24 publications

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“…Distributed satellite systems (DSS) are an enabling technology for future distributed space missions since they are designed to interact as multi-agent systems for consensus tracking or formation keeping. DSS are deployed at different altitudes and in various configurations (e.g., formations, clusters, swarms, or cancellations) to accomplish distributed space missions like constellation [1], Earth observation [2], remote sensing [3], communication services [4], and meteorology and environmental tasks [5].…”

Section: Introductionmentioning

confidence: 99%

Attitude Synchronization and Stabilization for Multi-Satellite Formation Flying with Advanced Angular Velocity Observers

Kada,

Munawar,

Shaikh

2023

IJACSA

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This paper focuses on two aspects of satellite formation flying (SFF) control: finite-time attitude synchronization and stabilization under undirected time-varying communication topology and synchronization without angular velocity measurements. First, a distributed nonlinear control law ensures rapid convergence and robust disturbance attenuation. To prove stability, a Lyapunov function involving an integrator term is utilized. Specifically, attitude synchronization and stabilization conditions are derived using graph theory, local finite-time convergence for homogeneous systems, and LaSalle's non-smooth invariance principle. Second, the requirements for angular velocity measurements are loosened using a distributed high-order sliding mode estimator. Despite the failure of intersatellite communication links, the homogeneous sliding mode observer precisely estimates the relative angular velocity and provides smooth control to prevent the actuators of the satellites from chattering. Simulations numerically demonstrate the efficacy of the proposed design scheme.

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Section: Introductionmentioning

confidence: 99%

Attitude Synchronization and Stabilization for Multi-Satellite Formation Flying with Advanced Angular Velocity Observers

Kada,

Munawar,

Shaikh

2023

IJACSA

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“…The problem of controlling groups of mobile agents has several applications in agriculture [1], data collection [2], and space engineering [3,4]. Implementations range from agent-based systems [5,6] and artificial neural networks [7,8] to coupled-oscillator dynamics [9,10].…”

Section: Introductionmentioning

confidence: 99%

The effects of time-delay and phase lags on symmetric circular formations of mobile agents

Freitas

Yanchuk

Grande

et al. 2021

Eur. Phys. J. Spec. Top.

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The mobile agents' circular formation problem is driven by applications that require a desired spatial and temporal separation, such as data collection or satellite constellations. There are numerous strategies to assign the cluster number and spacing, the radius of the trajectory, communication network, and other parameters. In this numerical study, we are particularly interested in the effects of time-delay and phase lag on circular formations with symmetric clusters in a first-order model with all-to-all interaction. When the information exchange time-delay exceeds some critical value, it leads to either incoherent or alternative symmetric arrangements. Besides, we show that formations can be effectively controlled using phase lags. As a paradigmatic example, we consider identical phase lags for half of the agents, while the other half receives an opposite phase lag. As a result, the system reaches more complicated stable arrangements. For instance, the agents can split into asymmetric clusters, each of them creating a symmetric formation.

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“…Pesquisas foram realizadas com o GEO a fim de melhorar sua eficiência e desenvolver diversas versões do mesmo, como híbrida [Galski et al 2011], paralela [Galski 2006] e multi-objetivo com codificação real [Mainenti-Lopes, Souza e De Sousa 2012]. O GEO e suas versões vem sendo aplicado com sucesso em muitos problemas de otimização em engenharia, como transferência radiativa [De Sousa et al 2007], projeto de sistemas ópticos [De Albuquerque, De Sousa e Montes 2016], veículos autônomos [Freitas, De Sousa e Macau 2018] e sistemas térmicos [Muraoka et al 2006].…”

Section: Introductionunclassified

Implementação Adaptativa de Variante do Algoritmo de Otimização Extrema Generalizada (GEO)

Luz¹,

Sousa²,

Chagas³

2021

Anais Do XLVIII Seminário Integrado De Software E Hardware (SEMISH 2021)

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Reactive model for autonomous vehicles formation following a mobile reference

Cited by 7 publications

References 24 publications

Attitude Synchronization and Stabilization for Multi-Satellite Formation Flying with Advanced Angular Velocity Observers

Attitude Synchronization and Stabilization for Multi-Satellite Formation Flying with Advanced Angular Velocity Observers

The effects of time-delay and phase lags on symmetric circular formations of mobile agents

Implementação Adaptativa de Variante do Algoritmo de Otimização Extrema Generalizada (GEO)

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