Ara es mostren els items 134-153 de 216

    • New interactive books for control education 

      Guzmán Sánchez, José Luis; Piguet, Yves; Dormido Bencomo, Sebastián; Berenguel Soria, Manuel; Costa Castelló, Ramon (2018-01-01)
      Article
      Accés obert
      This paper presents ongoing project to develop new interactive books for control education. The novelty of the proposed idea is to merge web-based solutions with LaTex text into a epub format. In such a way, classical ...
    • Non-uniform sampling in digital repetitive control systems: An LMI stability analysis 

      Ramos Fuentes, Germán Andrés; Olm Miras, Josep Maria; Costa Castelló, Ramon (2009-03)
      Report de recerca
      Accés obert
      Digital repetitive control is a technique which allows to track periodic references and/or reject periodic disturbances. Repetitive controllers are usually designed assuming a fixed frequency for the signals to be ...
    • Nonlinear adaptive observation of the liquid water saturation in polymer electrolyte membrane fuel cells 

      Cecilia Piñol, Andreu; Serra, Maria; Costa Castelló, Ramon (2021)
      Article
      Accés obert
      Efficiency, reliability and lifetime of polymer electrolyte membrane fuel cells (PEMFCs) are significantly limited by inadequate water management. High-performance water active control algorithms cannot be implemented due ...
    • Nonlinear experiments : a saturation example 

      Lampon Diestre, Cristina; Costa Castelló, Ramon; Dormido Bencomo, Sebastián (2015)
      Text en actes de congrés
      Accés obert
      Most control system are in uenced by static nonlinearities. It is important for an engineer to understand which is the e ect of these nonlinearities. Unfortunatelly most hands-on laboratory can not be used for these type ...
    • Nonlinear predictive control for the four-tanks plant flow regulation 

      Luna Pacho, Julio Alberto; Acevedo Valle, Juan M.; Rosanas Boeta, Noe; Costa Castelló, Ramon (2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The four-tanks system is well-known and a considerable number of works study it in the existent literature. This work proposes a nonlinear model predictive control (NMPC) design to regulate the water ¿ow inputs of the four ...
    • Observación de la fracción de agua líquida en pilas de combustible tipo PEM de cátodo abierto 

      Costa Castelló, Ramon; Luna Pacho, Julio Alberto (Universidad de Oviedo, 2017)
      Text en actes de congrés
      Accés obert
      En este trabajo se diseña un observador no-lineal basado en modos deslizantes para la estimación de la fracción de agua líquida en una pila de combustible tipo PEM de cátodo abierto. La pila de combustible se modela con ...
    • Observador de alta ganancia con zona muerta ajustable para estimar la saturación de agua líquida en pilas de combustible tipo PEM 

      Cecilia Piñol, Andreu; Costa Castelló, Ramon (Elsevier, 2020-04-01)
      Article
      Accés obert
      In the area of PEM fuel cells, water management remains one of the most challenging issues affecting PEMFC efficiency and lifetime. Liquid water active control and supervision techniques are limited by the absence of online ...
    • Observador de alta ganancia con zona muerta para pilas de combustible PEM de cátodo abierto 

      Cecilia Piñol, Andreu; Costa Castelló, Ramon (2019)
      Text en actes de congrés
      Accés obert
      En este trabajo se presenta el diseño de un observador de estado para la estimación de la saturación de agua líquida en la capa catalizadora del cátodo de una pila de combustible PEM de cátodo abierto. El observador propuesto ...
    • Odd-Harmonic Digital Repetitive Control of a Single-Phase Current Active Filter 

      Costa Castelló, Ramon; Griñó Cubero, Robert; Fossas Colet, Enric (Institute of Electrical and Electronics Engineers (IEEE), 2004-07)
      Article
      Accés obert
      Shunt active power filters have been proved as useful elements to correct distorted currents caused by nonlinear loads in power distribution systems. This work presents an all-digital approach, based on the repetitive ...
    • Odd-harmonic repetitive control of an active filter under varying network frequency: a small-gain theorem-based stability analysis 

      Olm Miras, Josep Maria; Ramos Fuentes, Germán Andrés; Costa Castelló, Ramon; Cardoner Parpal, Rafel (2010)
      Text en actes de congrés
      Accés restringit per decisió de l'autor
      This work deals with the design and analysis of a controller for a shunt active power filter. The design is based on combined feedforward and feedback actions, the last using repetitive control, and aims at the obtention ...
    • Odd-harmonic repetitive control of an active filter under varying network frequency: control design and stability analysis 

      Olm Miras, Josep Maria; Ramos Fuentes, Germán Andrés; Costa Castelló, Ramon; Cardoner Parpal, Rafel (IEEE Press. Institute of Electrical and Electronics Engineers, 2010)
      Text en actes de congrés
      Accés obert
      This work deals with the design and analysis of a controller for a shunt active power filter. The design is based on combined feedforward and feedback actions, the last using repetitive control, and aims at the obtention ...
    • Odd-harmonic Repetitive Control of an Active Filter under Varying Network Frequency: Practical Considerations 

      Costa Castelló, Ramon; Olm Miras, Josep Maria; Ramos Fuentes, Germán Andrés; Cardoner Parpal, Rafel (2010)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This work deals with the design and analysis of a controller for a shunt active power filter. The design is based on combined feedforward and feedback actions, the last using oddharmonic repetitive control, and aims at ...
    • On addressing the security and stability issues due to false data injection attacks in DC microgrids an adaptive observer approach 

      Cecilia Piñol, Andreu; Sahoo, Subham; Dragicevic, Tomislav; Costa Castelló, Ramon; Blaabjerg, Frede (Institute of Electrical and Electronics Engineers (IEEE), 2022)
      Article
      Accés obert
      This paper proposes an observer-based methodology to detect and mitigate false data injection attacks in collaborative DC microgrids. The ability of observers to effectively detect such attacks is complicated by the presence ...
    • On preserving passivity in sampled-data linear systems 

      Costa Castelló, Ramon; Fossas Colet, Enric (2005-03)
      Report de recerca
      Accés obert
      Passivity is a well know phenomenon in several engineering areas. Due to its interesting properties, it is used in several areas of control engineering. Generally, this property is lost under direct discretization. In this ...
    • On real time teaching in non computer science curricula 

      Costa Castelló, Ramon (Universitat Politècnica de Catalunya. Institut d'Organització i Control de Sistemes Industrials, 2005-01)
      Report de recerca
      Accés obert
      This work describes the topics taught on a realtime programming course. This course is part of the Degrees in Electronics, Mechanical Engineering and Automatic Control, and thus most students do not have a background ...
    • On state-estimation in weakly-observable scenarios and implicitly regularized observers 

      Cecilia Piñol, Andreu; Costa Castelló, Ramon (Institute of Electrical and Electronics Engineers (IEEE), 2021)
      Text en actes de congrés
      Accés obert
      This work proposes a framework to design observers for systems that present low observability. It is shown that, in these scenarios, the estimation problem becomes ill-posed, which drastically limits the performance of ...
    • On teaching digital control systems in a generic engineering degree 

      Lerma Macaya, Eneko; Costa Castelló, Ramon; Griñó Cubero, Robert; Sanchis, Carlos (2019)
      Text en actes de congrés
      Accés obert
      In this work, the subject of digital control taught in a generic engineering degree is described. In particular, the contents of the course, the experimental environment and the interactive tools used in teaching are ...
    • On teaching model-based fault diagnosis in engineering curricula 

      Costa Castelló, Ramon; Puig Cayuela, Vicenç; Blesa Izquierdo, Joaquim (2016-02-01)
      Article
      Accés obert
      This article presents an example of how a fault-diagnosis course has been included in an engineering curricula in a motivating way, in particular, in the automatic control and robotic master's degree program at UPC. This ...
    • On the role of virtual laboratories in an undergraduate power electronics introductory course 

      Biel Solé, Domingo; Vento Maldonado, Jorge; Costa Castelló, Ramon (2010-01)
      Report de recerca
      Accés obert
    • Online state of charge estimation for a vanadium redox flow battery with unequal flow rates 

      Clemente León, Alejandro; Cecilia Piñol, Andreu; Costa Castelló, Ramon (Elsevier, 2023-04)
      Article
      Accés obert
      This study presents an observer-based methodology to estimate, in real-time, the state of charge of a Vanadium redox flow battery. Different from the available results in the literature, this work presents a new estimator ...