Zobrazeno 1 - 10
of 4 451
pro vyhledávání: '"GONÇALVES, A. M."'
We present a new Lyapunov-based switching attitude controller for energy-efficient real-time selection of the torque inputted to an uncrewed aerial vehicle (UAV) during flight. The proposed method, using quaternions to describe the attitude of the co
Externí odkaz:
http://arxiv.org/abs/2411.00417
Autor:
Goncalves, Francisco M. F. R., Bena, Ryan M., Matveev, Konstantin I., Perez-Arancibia, Nestor O.
We present a switching scheme, which uses both the attitude-error quaternion (AEQ) and the angular-velocity error, for controlling the rotational degrees of freedom of an uncrewed aerial vehicle (UAV) during flight. In this approach, the proposed con
Externí odkaz:
http://arxiv.org/abs/2410.12054
Autor:
Longwell, Cody R., Trygstad, Conor K., Goncalves, Francisco M. F. R., Xu, Ke, Perez-Arancibia, Nestor O.
We introduce a new low-power 13-mg microactuator driven by shape-memory alloy (SMA) wires for underwater operation. The development of this device was motivated by the recent creation of microswimmers such as the FRISHBot, WaterStrider, VLEIBot, VLEI
Externí odkaz:
http://arxiv.org/abs/2409.18347
We investigate the effect of the breaking of integrability in the integrals of motion of a sine-Gordon-like system. The class of quasi-integrable models, discussed in the literature, inherits some of the integrable properties they are associated with
Externí odkaz:
http://arxiv.org/abs/2408.10101
Autor:
Gonçalves, Francisco M. F. R., Bena, Ryan M., Matveev, Konstantin I., Pérez-Arancibia, Néstor O.
We present model predictive selection (MPS), a new method for selecting the stable closed-loop (CL) equilibrium attitude-error quaternion (AEQ) of an uncrewed aerial vehicle (UAV) during the execution of high-speed yaw maneuvers. In this approach, we
Externí odkaz:
http://arxiv.org/abs/2403.07269
Autor:
Blankenship, Elijah K., Trygstad, Conor K., Gonçalves, Francisco M. F. R., Pérez-Arancibia, Néstor O.
This paper presents the VLEIBot^* (Very Little Eel-Inspired roBot), a 45-mg/23-mm^3 microrobotic swimmer that is propelled by a bioinspired anguilliform propulsor. The propulsor is excited by a single 6-mg high-work-density (HWD) microactuator and un
Externí odkaz:
http://arxiv.org/abs/2403.07073
Autor:
Vasconcellos, Eduardo Charles, Sampaio, Ronald M, Araújo, André P D, Clua, Esteban Walter Gonzales, Preux, Philippe, Guerra, Raphael, Gonçalves, Luiz M G, Martí, Luis, Lira, Hernan, Sanchez-Pi, Nayat
Publikováno v:
NeurIPS 2023 Workshop on Robot Learning Workshop: Pretraining, Fine-Tuning, and Generalization with Large Scale Models, Dec 2023, New Orelans, United States
This work focuses on the main challenges and problems in developing a virtual oceanic environment reproducing real experiments using Unmanned Surface Vehicles (USV) digital twins. We introduce the key features for building virtual worlds, considering
Externí odkaz:
http://arxiv.org/abs/2402.03337
Autor:
Gonçalves-Faria, M. V., Pashkin, A., Wang, Q., Lei, H. C., Winnerl, S., Tsirlin, A. A., Helm, M., Uykur, E.
Temperature- and fluence-dependent carrier dynamics of the magnetic Kagome metal Fe$_3$Sn$_2$ were studied using the ultrafast optical pump-probe technique. Two carrier relaxation processes ($\tau_1$ and $\tau_2$) and a laser induced coherent optical
Externí odkaz:
http://arxiv.org/abs/2307.05139
Autor:
Moura, Rita, Fidalgo, Daniel, Oliveira, Dulce, Reis, Ana Rita, Areias, Bruno, Sousa, Luísa, Gonçalves, João M., Sousa, Henrique, Natal Jorge, R.N., Parente, Marco
Publikováno v:
Engineering Computations, 2024, Vol. 41, Issue 6, pp. 1381-1398.
Externí odkaz:
http://www.emeraldinsight.com/doi/10.1108/EC-12-2023-0943
Autor:
Fernando Pinto Coelho, Rômulo Simões C. Menezes, Everardo Valadares de S. B. Sampaio, Márcio Gomes Barboza, Emerson Carlos Soares, Elica Amara C. Guedes-Coelho, Elvis J. de França, Agnaldo J. dos Santos, Marcelo F. de Lima, Manoel Messias da S. Costa, Natache Gonçalves de M. Ferrão, Bruno M. Soares, Diego M. do Nascimento, Victor Andrei R. Carneiro, Cesar Augusto M. de Abreu
Publikováno v:
Phycology, Vol 4, Iss 3, Pp 394-413 (2024)
Macroalgae are a natural oceanic resource of inexhaustible abundance for the biomass energy industry with growth rates that are three to four times greater than those of terrestrial plants. The objective of this study was to evaluate the sustainabili
Externí odkaz:
https://doaj.org/article/44f380d4407f46c1bc6f7624c4dd9f45