Now showing items 1-20 of 93

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

(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 ﻿

(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 ﻿

(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 ﻿

(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 ﻿

(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 ﻿

(1999)
External research report
Open Access
• #### A mixed-signal architecture for high complexity CMOS fuzzy controllers ﻿

(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 ﻿

(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 ﻿

(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 ﻿

(2009-11-19)
Conference report
Open Access
• #### Algebraic PGD for tensor separation and compression: an algorithmic approach ﻿

(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 ﻿

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 ﻿

(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 ﻿

(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 ﻿

(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 ﻿

(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 ﻿

(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.) ﻿

(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 ﻿

(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 ...