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  1. A Robust Control Strategy for Landing an Unmanned Aerial Vehicle on a Vertically Moving Platform.Carlos Aguilar-Ibanez, Miguel S. Suarez-Castanon, Octavio Gutierrez-Frias, Jose de Jesus Rubio & Jesus A. Meda-Campana - 2020 - Complexity 2020:1-13.
    In this work, we solve the uncertain unmanned aerial vehicle smooth landing problem over a moving platform, assuming that the aircraft position relative to the platform and its acceleration is always measurable. The landing task is carried out by an output-feedback robust controller, together with a repulsive force. The robust controller controls the nominal model, accomplishes the needed tracking trajectory, and counteracts the unknown uncertainties. To assure that the aircraft is always above the platform, we include a repulsive force that (...)
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    Stabilization of Two Electricity Generators.Dany Ivan Martinez, José de Jesús Rubio, Arturo Aguilar, Jaime Pacheco, Guadalupe Juliana Gutierrez, Victor Garcia, Tomas Miguel Vargas, Genaro Ochoa, David Ricardo Cruz & Cesar Felipe Juarez - 2020 - Complexity 2020:1-13.
    In this research, a sliding mode regulator with sine mapping is suggested for the stabilization of electricity generators being affected by magnet interaction nonlinearities and generator nonlinearities. To reach this goal, our suggested regulator has the following contributions: it starts from the sliding mode regulator with the modifications that the saturation mapping is used to reach a smoother performance instead of the signum mapping, and the sine mapping is applied to reach an upper bound in the proportional gain error, it (...)
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    A Luenberger-Like Observer for Multistable Kapitaniak Chaotic System.J. Humberto Pérez-Cruz, Jacobo Marcos Allende Peña, Christian Nwachioma, Jose de Jesus Rubio, Jaime Pacheco, Jesus Alberto Meda-Campaña, David Ávila-González, Olivia Guevara Galindo, Ignacio Adrian Romero & Salvador Isidro Belmonte Jiménez - 2020 - Complexity 2020:1-12.
    The objective of this paper is to estimate the unmeasurable variables of a multistable chaotic system using a Luenberger-like observer. First, the observability of the chaotic system is analyzed. Next, a Lipschitz constant is determined on the attractor of this system. Then, the methodology proposed by Raghavan and the result proposed by Thau are used to try to find an observer. Both attempts are unsuccessful. In spite of this, a Luenberger-like observer can still be used based on a proposed gain. (...)
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