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On the functional form of the universal star-formation law
(The American Astronomical Society, 2015)
We study the functional form of the star-formation law using the Vaschy–Buckingham Pi theorem. We find that it should
have the form Sµ S ˙ G
L gas
3 2, where L is a characteristic length that is related to an integration ...
Dynamic Control of Mobile Multirobot Systems: The Cluster Space Formulation
(Institute of Electrical and Electronics Engineers, 2014-05)
The formation control technique called cluster space control promotes simplified specification and monitoring of the motion of mobile multirobot systems of limited size. Previous paper has established the conceptual ...
3D Formation Control of Autonomous Vehicles Based on Null-Space
(Springer, 2016-12)
This paper proposes a new algorithm for controlling a formation of multiple autonomous aerial vehicles based on multiple control objectives. The strategy includes using the null space of a Jacobian matrix to achieve the ...
Quaternions and Dual Quaternions: Singularity-Free Multirobot Formation Control
(Springer, 2016-12)
Cluster space control is a method of multirobot formation keeping that considers a group of robots to be a single entity, defining state variables to represent characteristics of the group, such as position, orientation, ...
Controle robusto de robos móveis em formação sujeitos a falhas
(Sociedade Brasileira de Automática, 2010)
Este artigo trata de controle robusto e controle tolerante a falhas de movimentos coordenados de robôs móveis com rodas. O controle robusto é baseado em controle H∞ não linear por realimentação da saída. O controle ...
Dual Quaternion Cluster-Space Formation Control
(Institute of Electrical and Electronics Engineers, 2021-10)
We present a tracking controller for mobile multirobot systems based on dual quaternion pose representations applied to formations of robots in a leader-follower configuration, by using a cluster-space state approach. The ...
Zero drift regions and control strategies to keep satellite in formation around triangular libration point in the restricted Sun-Earth-Moon scenario
(2015-01-01)
In this work, we are interested in avoiding large variations in the mutual distances among multiple satellites and also in controlling their geometric configuration around an Earth-Moon triangular point. Previous studies ...
On the Functional form of the Universal Star-Fomation Law
(American Astronomical Society, 2015)
We study the functional form of the star-formation lawusing the Vaschy–Buckingham Pi theorem. We find that it should
have theform S μ S ˙ G
L gas
3 2, where L is a characteristic length that is related to an integration ...
The Multilayer Control Scheme: a strategy to guide n-robots formations with obstacle avoidance
(Springer, 2015-06)
A multilayer scheme is here proposed to implement coordinated control of a group of mobile robots. Specifically, a trajectory tracking controller is proposed to coordinately guide a platoon of robots, with an obstacle ...
Framing of research question using the PICOT format in randomised controlled trials of venous ulcer disease: a protocol for a systematic survey of the literature
(2016-11-11)
INTRODUCTION: Although venous ulcers have a great social and economic impact, there is a lack of evidence from randomised controlled trials (RCTs) to support appropriate management for this disease. Framing the research ...