Now showing items 1-20 of 93

    • A cellular decomposition of the manifold of observable conditioned invariant subspaces 

      Puerta Sales, Ferran; Puerta Coll, Xavier; Zaballa, Ion (2000)
      Article
      Open Access
      Given an observable system defined by a pair of matrices $(C,A)$ we obtain a cellular decomposition of the manifold of $(C,A)$-conditioned invariant subspaces having the restricted system fixed observability indices and ...
    • A chaotic secure communication scheme based on duffing oscillators and frequency estimation 

      Zapateiro, Mauricio; Vidal Seguí, Yolanda; Acho Zuppa, Leonardo (2013)
      Conference report
      Open Access
      This work presents a new technique to securely transmit and retrieve a message signal via chaotic systems. In our system, a two-valued message signal modulates the frequency of a Duffing oscillator sinusoidal term. An ...
    • A coordinate atlas of the manifold of observable conditioned invariant subspaces 

      Puerta Sales, Ferran; Puerta Coll, Xavier; Zaballa, Ion (1999)
      Article
      Open Access
      Given an observable system (C,A)€ K^(mxn)X K^(nxn)with K=R or C, the set of (C,A)-invariant subspaces having the restricted system fixed observability indices is a smooth manifold embedded on the corresponding ...
    • A defuzzification based new algorithm for the design of Mamdani-type fuzzy controllers 

      Saade, J.J. (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2000)
      Article
      Open Access
      This paper presents a new learning algorithm for the design of Mamdani-type or fully-linguistic fuzzy controllers based on available input-output data. It relies on the use of a previously introduced parametrized defuzzification ...
    • A genetic algorithm for the multistage control of a fuzzy system in a fuzzy environment 

      Kacprzyk, Janusz (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1997)
      Article
      Open Access
      We discuss a prescriptive approach to multistage optimal fuzzy control of a fuzzy system, given by a fuzzy state transition equation. Fuzzy constraints and fuzzy goals at consecutive control stages are given, and ...
    • A geometrical aprroach to C<sup>p</sup>-globalization of pointwise matricial relations 

      Puerta Sales, Ferran; Puerta Coll, Xavier (1999)
      External research report
      Open Access
    • A mixed-signal architecture for high complexity CMOS fuzzy controllers 

      Navas González, Rafael; Vidal Verdú, Fernando; Rodríguez-Vázquez, Ángel (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1999)
      Article
      Open Access
      Analog circuits provide better area/power efficiency than their digital counterparts for low-medium precision requirements [1]. This limit in precision, as well as the lack of design tools when compared to the digital ...
    • A modified Chua chaotic oscillator and its application to secure communications 

      Zapateiro, Mauricio; Acho Zuppa, Leonardo; Vidal Seguí, Yolanda (2014)
      Article
      Open Access
      In this paper, a new modified Chua oscillator is introduced. The original Chua oscillator is well known for its simple implementation and mathemati- cal modeling. A modification of the oscillator is proposed in order to ...
    • Actuator fault-tolerant control based on set separation 

      Ocampo-Martínez, Carlos; Doná, José A. de; Serón, María (2008)
      External 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. ...
    • Admissible Model Matching Fault Tolerant Control based on LPV Fault Representation 

      Montes de Oca, Saúl; Puig Cayuela, Vicenç; Theilliol, Didier; Tornil Sin, Sebastián (2009-11-19)
      Conference report
      Open Access
    • Algebraic PGD for tensor separation and compression: an algorithmic approach 

      Díez, Pedro; Zlotnik, Sergio; García González, Alberto; Huerta, Antonio (2018-07)
      Article
      Open Access
      Proper Generalized Decomposition (PGD) is devised as a computational method to solve high-dimensional boundary value problems (where many dimensions are associated with the space of parameters defining the problem). The ...
    • Alimentación de modelos cuantitativos con información subjetiva: aplicación Delphi en la elaboración de un modelo de imputación del gasto turístico individual en Catalunya 

      Landeta Rodríguez, J.; Matey de Antonio, J.; Ruíz Herrán, V.; Villarreal Larrinaga, O. (Institut d'Estadística de Catalunya, 2002)
      Article
      Open Access
      El presente artículo presenta un estudio realizado para el Institut d'Estadística de Catalunya, donde se ha aplicado una técnica que trabaja con información subjetiva (el Método Delphi) para obtener unos datos que puedan ...
    • An LPV Fractional Model for Canal Control 

      Bolea Monte, Yolanda; Martínez González, Rubén; Grau Saldes, Antoni; Martínez García, Herminio (PERGAMON PRESS. IFAC SERIES., 2009)
      Conference report
      Restricted access - publisher's policy
      In this paper an LPV non-integer order control model of an irrigation canal is derived from system identification experiments. This model is experimentally obtained by using the described LPV fractional identification ...
    • Analysis of the control structures for an integrated ethanol processor for proton exchange membrane fuel cell systems 

      Biset, S; Nieto Deglioumini, Lucas; Basualdo, Marta; Garcia Mariel, Vanesa; Serra, Maria (2009)
      Article
      Open Access
      The aim of this work is to investigate which would be a good preliminary plantwide control structure for the process of Hydrogen production from bioethanol to be used in a proton exchange membrane (PEM) accounting only ...
    • Analyzing the performance of a miniature 3D wind sensor for Mars 

      Domínguez Pumar, Manuel; Kowalski, Lukasz; Jiménez Serres, Vicente; Rodríguez Pérez, Ivette María; Soria Guerrero, Manel; Bermejo Broto, Sandra; Pons Nin, Joan (Multidisciplinary Digital Publishing Institute (MDPI), 2020-10-20)
      Article
      Open Access
      This paper analyzes the behavior of a miniature 3D wind sensor designed for Mars atmosphere. The sensor is a spherical structure of 10 mm diameter divided in four sectors. By setting all the sectors to constant temperature, ...
    • Análisis tensión - deformación de la construcción incremental de presas de tierra: comparación entre FLAC y PLAXIS 

      López Rayo, José Javier (Universitat Politècnica de Catalunya / Universitat de Barcelona, 2002-11)
      Minor thesis
      Open Access
      L’objectiu del treball realitzat consisteix en la comparació de dos dels programae comercials de mètodes numérics més utilitzats fins el moment, FLAC i PLAXIS, per al cas particular de l’anàlisi de tensió-deformació de ...
    • Automatic synthesis of fuzzy logic controlers 

      Barriga Barrios, Ángel; Sánchez Solano, Santiago; Jiménez, Carlos J.; Galán, D.; López, Diego R. (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1996)
      Article
      Open Access
      This paper describes a design environment for the hardware realizations of fuzzy controllers which includes a set of CAD tools to ease the description, verification and synthesis of this kind of systems. Special emphasis ...
    • Automatized Measurement Setup for Performance Evaluation of Wi-Fi Mesh Networks (A.M.S.P.E.W.M.N.) 

      Torres Alcantud, David (Universitat Politècnica de Catalunya, 2017-10-20)
      Bachelor thesis
      Open Access
      Covenantee:   Technische Universität Wien
      Telecommunications is an everchanging world. Everyday we are faced with improvements in the way we communicate and so in the tools that we use, especially in the field of Wi-Fi connection. The 5G connection will soon start ...
    • Barcelona Virtual Mobility Lab: the multimodal transport simulation testbed for emerging mobility concepts evaluation 

      Montero Mercadé, Lídia; Linares Herreros, María Paz; Salmeron Moya, Juan; Recio, Gonzalo; Lorente, Ester; Vázquez, Juan José (International Academy, Research, and Industry Association (IARIA), 2018)
      Conference report
      Open Access
      New sustainable mobility concepts and smart resilient ideas are arising every day. However, there is not an easy way to bring these ideas into reality, or to test how good they are as mobility solutions. Virtual Mobility ...
    • Canal Identification for Fractional Linear Control Purposes 

      Martínez González, Rubén; Bolea Monte, Yolanda; Grau Saldes, Antoni; Martínez García, Herminio (Secretariado de Publicaciones e Intercambio científico. Universidad de Valladolid, 2009-09)
      Conference report
      Open Access
      In this paper an LPV rational order control model of an irrigation canal is experimentally obtained by using the described LPV fractional identification procedure. Global LPV model is obtained from polynomial interpolation ...