Persona: Aranda Escolástico, Ernesto
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Aranda Escolástico
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Ernesto
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Publicación Simulation and Experimental Results of a New Control Strategy For Point Stabilization of Nonholonomic Mobile Robots(IEEE, 2019-08-22) Farias, Gonzalo; Garcia, Gonzalo; Dormido Bencomo, Sebastián; Fábregas Acosta, Ernesto; Aranda Escolástico, Ernesto; Chaos García, Dictino; Dormido Canto, SebastiánThis article presents a closed-loop position control of a mobile robot, which is capable of moving from its current position to a target point by manipulating its linear and angular velocities. The main objective of this article is to modify an existing control law based on the kinematic model to improve the response when the robot is backwards oriented and to reach the destination point in less time and with a shorter trajectory. Stability of the proposed control law is validated by Lyapunov Criterion. Some procedures are implemented to test this approach both in simulation with MATLAB, and experimentally with the Khepera IV robot.Publicación Customized Online Laboratory Experiments: A General Tool and Its Application to the Furuta Inverted Pendulum [Focus on Education](Institute of Electrical and Electronics Engineers (IEEE), 2019-09-17) Galán, Daniel; Chaos García, Dictino; Torre Cubillo, Luis de la; Aranda Escolástico, Ernesto; Heradio Gil, RubénBecause of online laboratories (labs), students can perform experimental activities from their mobile devices and/or computers. This article proposes an experimentation environment (EE) that extends the capabilities of interactive online labs with scripting language support. Thus, control engineering students can specify complex experiments, avoid routine tasks, and empirically test controllers they made themselves.Publicación A bibliometric analysis of off-line handwritten document analysis literature (1990–2020)(Elsevier, 2022-05) Ruiz Parrado, Victoria; Vélez, José F.; Heradio Gil, Rubén; Aranda Escolástico, Ernesto; Sánchez Ávila, ÁngelProviding computers with the ability to process handwriting is both important and challenging, since many difficulties (e.g., different writing styles, alphabets, languages, etc.) need to be overcome for addressing a variety of problems (text recognition, signature verification, writer identification, word spotting, etc.). This paper reviews the growing literature on off-line handwritten document analysis over the last thirty years. A sample of 5389 articles is examined using bibliometric techniques. Using bibliometric techniques, this paper identifies (i) the most influential articles in the area, (ii) the most productive authors and their collaboration networks, (iii) the countries and institutions that have led research on the topic, (iv) the journals and conferences that have published most papers, and (v) the most relevant research topics (and their related tasks and methodologies) and their evolution over the years.Publicación A bibliometric analysis of off-line handwritten document analysis literature (1990–2020)(Elsevier, 2022-05) Ruiz Parrado, Victoria; Vélez, José F.; Heradio Gil, Rubén; Aranda Escolástico, Ernesto; Sánchez Ávila, ÁngelProviding computers with the ability to process handwriting is both important and challenging, since many difficulties (e.g., different writing styles, alphabets, languages, etc.) need to be overcome for addressing a variety of problems (text recognition, signature verification, writer identification, word spotting, etc.). This paper reviews the growing literature on off-line handwritten document analysis over the last thirty years. A sample of 5389 articles is examined using bibliometric techniques. Using bibliometric techniques, this paper identifies (i) the most influential articles in the area, (ii) the most productive authors and their collaboration networks, (iii) the countries and institutions that have led research on the topic, (iv) the journals and conferences that have published most papers, and (v) the most relevant research topics (and their related tasks and methodologies) and their evolution over the years.Publicación Customized Online Laboratory Experiments: A General Tool and Its Application to the Furuta Inverted Pendulum [Focus on Education](Institute of Electrical and Electronics Engineers (IEEE), 2019-09-17) Galán, Daniel; Chaos García, Dictino; Torre Cubillo, Luis de la; Aranda Escolástico, Ernesto; Heradio Gil, RubénBecause of online laboratories (labs), students can perform experimental activities from their mobile devices and/or computers. This article proposes an experimentation environment (EE) that extends the capabilities of interactive online labs with scripting language support. Thus, control engineering students can specify complex experiments, avoid routine tasks, and empirically test controllers they made themselves.Publicación Novel aperiodic sampling and control strategies: application to underactuated systems(Universidad Nacional de Educación a Distancia (España). Escuela Internacional de Doctorado. Programa de Doctorado en Ingeniería de Sistemas y Control, 2018-09-21) Aranda Escolástico, ErnestoThe work in this thesis explores the possibilities of aperiodic sampling and control. Using the advances of the last decades in the field of networked systems, the main objective is to obtain methods to use the sampling period of the different measurements of the system to improve the performance or to reduce the transmission of information. With this idea, different eventtriggered control and multi-rate control schemes are proposed. In addition, this thesis aims to provide a practical usage of the strategies and, hence, different simulation and experimental results are developed. In the event-triggered control scenario, different periodic event-triggered strategies are proposed to deal asynchronous sampling, time-varying delays, disturbance rejection, etc. in linear systems. Besides, the practical application of the strategies commonly implies to deal with nonlinear systems. For this reason, some parts are dedicated to the extensions of the proposed strategies to some classes of nonlinear systems. Concretely, polynomial systems and inverted pendulum-type systems are studied. In the multi-rate scenario, the objective is tomaximize the performance of the plant considering that the information received from the sensor is collected at a lower frequency than the actuator’s rate and, hence, several inputs can be applied to the plant in each output sampling period. With this idea, some optimization methods are proposed and different strategies for their practical application are discussed. The methods are applied to an air levitation system with the main goal of obtaining an experimental validation. With theMatlab library for process control simulations, we close the loop providing tools to carry out the simulations necessary to validate the aforementioned theoretical frameworks. Finally, the objective of the last paper is to study alternative aperiodic control strategies in the framework of underactuated systems.