Persona: Sánchez Moreno, José
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Sánchez Moreno
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Publicación A systematic two-layer approach to develop Web-based experimentation environments for control engineering education((submitted), 2007-01-01) Vargas Oyarzún, Héctor; Dormido Bencomo, Sebastián; Sánchez Moreno, José; Dormido Canto, Raquel; Dormido Canto, Sebastián; Farias, GonzaloPublicación Event-based Control: A Bibliometric Analysis of Twenty Years of Research(IEEE, 2020-03-04) Aranda Escolástico, Ernesto; Guinaldo Losada, María; Heradio Gil, Rubén; Chacón, Jesús; Vargas Oyarzún, Héctor; Sánchez, José; Sánchez Moreno, José; Dormido Canto, SebastiánThe potential benefits of networked control systems are tremendous, as they can be easily upgraded by just including new components (i.e., sensors, actuators, or controllers), avoiding any further modifications to their structure. A critical approach to unleash such potential benefits is event-based control, where the system output turns to be sampled on demand, instead of being sampled constantly at rigid periods of time. This paper analyzes from a bibliometric point of view the literature published for the last twenty years on event-based control, identifying the most relevant articles, authors, institutions, and journals. Moreover, the principal topics, motivations, and problems faced by the researchers are discussed, identifying distinct challenges and opportunities for future research.Publicación Sistema para la mejora del entrenamiento del lanzamiento de disco(Comité Español de Automática, 2024-07-15) Moreno Salinas, David; Álvarez, J.; Revuelta, C.; Sánchez Moreno, JoséEn este trabajo se presenta el estado de desarrollo de un sistema de bajo coste orientado a entrenadores y atletas de alto rendimiento para la mejora de la técnica del lanzamiento de disco. El sistema está basado en el análisis conjunto de la información proporcionada por unidades de medida inerciales (IMU) y una cámara de vídeo. Inicialmente, las IMU se ubican en cinco puntos del cuerpo del lanzador (tobillo izquierdo y derecho, sacro, esternón y muñeca), así como en el interior del disco. La utilidad de las IMU es proporcionar datos de las aceleraciones y de los ángulos de orientación que permitan derivar de forma directa e indirecta ciertos parámetros biomecánicos del atleta durante el lanzamiento (p.e., desfase angular entre el eje de caderas, hombros y disco, velocidades angulares del disco, hombros y cadera, velocidad y ángulos de salida del disco, ángulo de spinning aplicado al disco, etc.), así como identificar las fases temporales que comporta todo lanzamiento y que determinan la calidad de éste, con el objetivo de maximizar la distancia de vuelo del disco. En lo que respecta al vídeo, éste se basa en la utilización de una única cámara para obtener un modelo de alambre 3D del atleta. Para ello, el vídeo se procesa mediante técnicas de aprendizaje profundo que obtienen la secuencia temporal de coordenadas 3D de hasta 23 puntos del cuerpo del atleta. Estos datos, junto con la información de las IMU, permiten mejorar el modelado biomecánico con parámetros como la ubicación del centro de masas del atleta y la evolución del momento angular del disco y del lanzador.Publicación Using Web-based laboratories for control engineering education(International Conference on Engineering Education – ICEE 2007, 2007-09-03) Dormido Bencomo, Sebastián; Vargas Oyarzún, Héctor; Esquembre Martínez, Francisco; Sánchez Moreno, José; Duro Carralero, Natividad; Dormido Canto, Raquel; Dormido Canto, SebastiánPublicación Asymmetric delayed relay feedback identification based on the n-shifting approach(Taylor and Francis Group, 2021-08-20) Sánchez Moreno, José; Dormido Bencomo, Sebastián; Miguel Escrig, Oscar; Romero Pérez, Julio Ariel; https://orcid.org/0000-0002-2405-8771; https://orcid.org/0000-0002-2472-2038; https://orcid.org/0000-0003-3397-2239The paper presents an improvement of the n-shifting technique to identify the frequency response of an industrial process using a fully asymmetric and delaying relay. The n-shifting approach allows the calculation of n + 1 points of G(s) by an asymmetric relay experiment. This set of n points is composed of G(0), G(jωosc), . . . , G(jnωosc), being ωoscthe oscillation frequency, and where G(jωosc) is in most cases located in the third quadrant of the Nyquist map. By delaying the relay output and repeating a similar experiment it can be generated n additional points of G(s) where the first point is G(jω’ osc) with 0 < ω’osc < ωosc. In this way, it is possible to depict the full output spectrum of G(s) from zero to very high frequencies by a short relay experiment. An example of identification and tuning of a PID controller with data from the n-shifting are presented to show the validity of the approach.Publicación On-line retuning of PID controllers with fixed threshold samplers(Elsevier, 2023-04-11) Miguel Escrig, Oscar; Romero Pérez, Julio Ariel; Dormido Canto, Sebastián; Sánchez Moreno, JoséThe appearance of limit cycle oscillations in control systems with fixed threshold based samplers degrades the performance of the control loop, accelerates the wear out of actuators, and introduces an unnecessary communication overhead in distributed control systems. In this paper, the role of the input signals to the control loop is taken into account when analyzing the existence of limit cycles induced by fixed threshold samplers. With this analysis, a methodology to re-tune PID controllers while running to avoid limit cycle oscillations generated by ramp-like excitation signals is presented. Implementation guidelines and several examples to illustrate the usefulness of the method are provided.Publicación Teleoperation of an inverted pendulum through the world wide web(2001 IFAC., 2002-01-01) Dormido Bencomo, Sebastián; Sánchez Moreno, José; Morilla García, FernandoPublicación Characterization of limit cycle oscillations induced by Fixed Threshold Samplers(Institute of Electrical and Electronics Engineers, 2022-06-17) Miguel Escrig, Oscar; Romero Pérez, Julio Ariel; Sánchez Moreno, José; Dormido Bencomo, Sebastián; https://orcid.org/0000-0002-2472-2038; https://orcid.org/0000-0002-2405-8771In this work, a generalized study of the conditions for the appearance of limit cycle oscillations induced by any kind of sampler with multilevel fixed thresholds is presented. These kinds of samplers, which will be referred to as Fixed Threshold Samplers (FTS), are characterized by a series of parameters, which, when selected properly, allow obtaining some of the most used forms of quantization in Event-Based Control (EBC). Because of some sampler characteristics, the obtained limit cycle oscillations can present a bias, therefore, to characterize them the Dual Input Describing Function (DIDF) method is used. The obtained DIDF is analyzed revealing some interesting properties allowing to simplify the robustness analysis. The analysis takes into account the effect of the disturbance and reference signal influence on the system, generally overlooked in DF analysis. Guidelines about how to perform the robustness analysis are given, showing their application through some study cases.Publicación The Three-Tank System: A Remote and Virtual Control Laboratory using Easy Java Simulations(2005-01-01) Vargas Oyarzún, Héctor; Dormido Bencomo, Sebastián; Duro Carralero, Natividad; Dormido Canto, Raquel; Sánchez Moreno, José; Pastor Vargas, Rafael; Dormido Canto, SebastiánPublicación Development of a Web-Based Control Laboratory for Automation Technicians: The Three-Tank System(IEEE TRANSACTIONS ON EDUCATION, 2007-01-01) Vargas Oyarzún, Héctor; Dormido Bencomo, Sebastián; Dormido Canto, Raquel; Duro Carralero, Natividad; Sánchez Moreno, José; Dormido Canto, Sebastián; Farias, Gonzalo