Browsing by Subject "Sistemes adaptatius"

Now showing items 1-20 of 48

    • A language for expressing fuzzy temporal rules 

      Cariñena Amigo, Purificación; Bugarín Diz, Alberto José; Mucientes, Manuel; Barro Ameneiro, D. Senén (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2000)
      Article
      Open Access
      This paper deals with the formal description of what we call Fuzzy Temporal Propositions: propositions with explicitly expressed information of a temporal type. The set of syntactic rules that make a grammar up for defining ...

    • Active damping of a DC network with a constant power load: an adaptive observer-based design 

      Machado, Juan; Ortega, Romeo; Astolfi, Alessandro; Arocas Pérez, José; Pyrkin, Anton; Bobtsov, Alexey; Griñó Cubero, Robert (Institute of Electrical and Electronics Engineers (IEEE), 2019)
      Conference report
      Open Access
      This paper proposes a nonlinear, output feedback, adaptive controller to increase the stability margin of a direct-current (DC), small-scale, electrical network containing an unknown constant power load. Due to their ...

    • Actuator fault-tolerant control based on set separation 

      Ocampo-Martínez, Carlos; Doná, José A. de; Serón, María (2008)
      Research report
      Open Access
      In this report an actuator fault-tolerant control (FTC) strategy based on set separation is presented. The proposed scheme employs a bank of observers which match the different fault situations that can occur in the plant. ...

    • Adaptive Compensation Strategy For The Tracking/Rejection of Signals with Time-Varying Frequency in Digital Repetitive Control Systems 

      Ramos Fuentes, Germán Andrés; Olm Miras, Josep Maria; Costa Castelló, Ramon (2009-09)
      Conference report
      Open Access
      Digital repetitive control is a technique which al- lows to track periodic references and/or reject peri- odic disturbances. Repetitive controllers are usually de- signed assuming a fixed frequency for the signals to ...

    • Adaptive generation of multilingual questions and answers from web content 

      Gatius Vila, Marta (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Conference report
      Open Access
      This article describes the adaptive generation of questions and answers from web content to assist the user when searching for information. The approach proposed integrates user models, domain-restricted knowledge ...

    • Adaptive motion planning for a mobile robot 

      Gifre Oliveras, Clara (Universitat Politècnica de Catalunya / University of Oulu, 2012)
      Master thesis (pre-Bologna period)
      Open Access
      Historically, trapezoidal velocity profiles have been widely used to control engines. Nevertheless, the evolution of robots and their uses has led to the need of using smoother profiles, due to the demand of high precision ...

    • Adaptive nonlinear guidance law using neural networks applied to a quadrotor 

      Rubí Perelló, Bartomeu; Morcego Seix, Bernardo; Pérez Magrané, Ramon (2019)
      Conference report
      Open Access
      The NonLinear Guidance Law (NLGL) is a geometric algorithm commonly employed to solve the path following problem on different unmanned vehicles. NLGL is simple (does no depend on the model of the vehicle), effective and ...

    • An adaptive observer-based controller design for active damping of a DC network with a constant power load 

      Machado, Juan E.; Ortega, Romeo; Astolfi, Alessandro; Arocas Pérez, José; Pyrkin, Anton A.; Bobtsov, Alexey; Griñó Cubero, Robert (2021)
      Article
      Open Access
      This article explores a nonlinear, adaptive controller aimed at increasing the stability margin of a direct-current (dc), small-scale, electrical network containing an unknown constant power load (CPL). Due to its negative ...

    • An Adaptive Predictive control scheme with dynamic Hysteresis Modulation applied to a DC-DC buck converter 

      Ponce de León Puig, Nubia Ilia; Bozalakov, Dimitar; Acho Zuppa, Leonardo; Vandevelde, Lieven; Rodellar Benedé, José (2020-05-18)
      Article
      Open Access
      This article proposes a recent Adaptive Predictive (AP) control technique applied to a DC-DC buck converter. This converter topology has a wide range of applications in the current electronic and electrical systems that ...

    • Aportación a la linealización de amplificadores de potencia mediante la teoría de la hiperestabilidad 

      Zozaya Sahad, Alfonso (Universitat Politècnica de Catalunya, 2002-07-19)
      Doctoral thesis
      Open Access
      Esta tesis trata de la aplicación del control adaptativo con modelo de referencia en paralelo para la linealización de un amplificador de potencia y del uso de la propiedad de la pasividad (hiperestabilidad) en el diseño ...

    • Architectural support for high-performing hardware transactional memory systems 

      Lupon Navazo, Marc (Universitat Politècnica de Catalunya, 2011-12-23)
      Doctoral thesis
      Open Access
      Parallel programming presents an efficient solution to exploit future multicore processors. Unfortunately, traditional programming models depend on programmer’s skills for synchronizing concurrent threads, which makes ...

    • Assessment of the energy implications adopting adaptive thermal comfort models during the cooling season: a case study for mediterranean nursing homes 

      Vergés Eiras, Roger; Gaspar Fàbregas, Kàtia; Forcada Matheu, Núria (Elsevier, 2023-11-15)
      Article
      Open Access
      The growing demand in the use of cooling in buildings for the effects of climate change and the thermal comfort conditions requires the adoption of energy conservation measures. Implementing adaptive thermal comfort models ...

    • Atenuación de perturbaciones periódicas mediante control MRAC con síntesis de controlador mínima 

      Larco Barros, Ciro Mauricio; Costa Castelló, Ramon; Olm Miras, Josep Maria (2016)
      Conference report
      Restricted access - publisher's policy
      El seguimiento/rechazo de perturbaciones periódicas en sistemas lineales es factible utilizando controladores basados en el principio del modelo interno. Sin embargo, cuando la frecuencia de la señal a seguir/rechazar es ...

    • Bilateral Teleoperation of Cooperative Manipulators 

      Aldana, Carlos; Basañez Villaluenga, Luis (2012)
      Conference report
      Restricted access - publisher's policy
      This paper presents an adaptive controller for the bilateral teleoperation of a system composed by a single local manipulator and multiple cooperative remote manipulators handling a common object. First, the nonlinear ...

    • Black-Box IP Validation with the SafeTI Traffic Injector: A Success Story 

      Fuentes, Francisco; Alcaide Portet, Sergi; Casanova, Raimon; Abella Ferrer, Jaume (Institute of Electrical and Electronics Engineers (IEEE), 2023)
      Conference lecture
      Open Access
      Functional and performance validation of high-performance safety-related hardware platforms require generating specific traffic patterns in the network-on-chip (NoC) to test IP components and their integration. Software-only ...

    • Characterization, development and experimental validation of a dynamic model of an open cathode PEM fuel cell 

      Strahl, Stephan; Husar, Attila Peter; Serra, Maria (2010)
      Conference report
      Open Access
      Water distribution in a fuel cell affects performance and durability, thus fundamental understanding of water transport mechanisms are imperative and can be strongly influenced through proper control strategies. A ...

    • Comparison of first- and second-order sliding-mode controllers for a dc-dc dual active bridge 

      Dòria Cerezo, Arnau; Serra, Federico; Esteban, Francisco Daniel; Biel Solé, Domingo; Griñó Cubero, Robert (Institute of Electrical and Electronics Engineers (IEEE), 2022-04-12)
      Article
      Open Access
      This paper compares four sliding-mode control strategies for a dual active bridge. The proposed control algorithms define different switching functions resulting in first-and second-order controllers, and using both ...

    • Competition car autonomous steering system design 

      Capdevila Cueto, David (Universitat Politècnica de Catalunya, 2021-07-05)
      Bachelor thesis
      Open Access
      When we talk about autonomous vehicles, we always think of a vehicle that can be driven by itself. However, this idea englobes a lot of concepts and systems that are implied and the conjunction and perfect synchronisation ...

    • Contribución al estudio y desarrollo de técnicas de control aplicadas a la linealización de sistemas 

      Montoro López, Gabriel (Universitat Politècnica de Catalunya, 1996-11-14)
      Doctoral thesis
      Open Access
      En esta Tesis se tratan varios aspectos relacionados con la linealización de sistemas no lineales. Las dificultades inherentes al empleo de técnicas de análisis, modelado y control de sistemas no lineales, son debidas en ...

    • Control Actiu en AFDX i Modelització d'ARINC 653 

      Ruiz De Azúa Ortega, Juan Adrián (Universitat Politècnica de Catalunya, 2015-10)
      Master thesis (pre-Bologna period)
      Open Access
      Covenantee:   Institut Supérieur de l'Aéronautique et de l'Espace
      The presented work is oriented on explain the experience of the investigation performed on the embedded systems field. Concretely, the investigation is composed of two standards: ARINC 664 and ARINC 653. The investigation ...