Pozo Montero, Francesc
Total activity: 152
Professional category
Tenure-track 2 lecturers
Doctoral courses
Doctor en Matemàtica Aplicada
University degree
Llicenciat en Matemàtiques
Postgraduated qualification
Postgrau en Visió per Computador
Research group
CODALAB - Control, Dynamics and Applications
Department
Department of Applied Mathematics III
Institute
Institute of Education Sciences
School
Escola Universitària d'Enginyeria Tècnica Industrial de Barcelona (EUETIB)
E-mail
francesc.pozoupc.edu
Contact details
UPC directory Open in new window
Orcid
0000-0001-8958-6789 Open in new window
ResearcherID
A-2609-2011 Open in new window

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Scientific and technological production
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1 to 50 of 152 results
  • Detection of structural changes through principal component analysis and multivariate statistical inference

     Pozo Montero, Francesc; Arruga Cantalapiedra, Ignacio; Mujica Delgado, Luis Eduardo
    World Conference on Structural Control and Monitoring
    p. 1349-1356
    Presentation's date: 2014-07-16
    Presentation of work at congresses

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    This paper is focused on the development of a damage detection indicator that combines a data driven baseline model (reference pattern obtained from the healthy structure) based on principal component analysis (PCA) and multivariate hypothesis testing. More precisely, a test for the plausibility of a value for a normal population mean vector is performed. The results indicate that the test is able to accurately clasify random samples as healthy or not.

  • A structural damage detection indicator based on principal component analysis and multivariate hypothesis testing over scores

     Pozo Montero, Francesc; Arruga Cantalapiedra, Ignacio; Mujica Delgado, Luis Eduardo
    European Workshop on Structural Health Monitoring
    p. 1568-1575
    Presentation's date: 2014-07-10
    Presentation of work at congresses

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    This paper is focused on the development of a damage detection indicator that combines a data driven baseline model (reference pattern obtained from the healthy structure) based on principal component analysis (PCA) and multivariate hypothesis testing. More pre- cisely, a test for the plausibility of a value for a normal population mean vector is per- formed. The results indicate that the test is able to accurately clasify random samples as healthy or not.

  • Data-driven methodology based on artificial immune systems for damage detection

     Anaya Vejar, Maribel; Tibaduiza Burgos, Diego A.; Pozo Montero, Francesc
    European Workshop on Structural Health Monitoring
    p. 1341-1348
    Presentation's date: 2014-07
    Presentation of work at congresses

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    Structural Health Monitoring is a growing area of interest given the benefits obtained from its use. This area includes different tasks in the damage identification process, the main important, is the damage detection since an early detection allows to avoid possible catastrophes in structures in service. Practical solutions require a big quantity of sensors and a robust system to process and obtain a reliable solution. In this sense, bio-inspired algorithms provide tools for an effective data analysis taking advantage of the developments provided by the nature by means of computational algorithms. As a contribution in this area, this paper presents a methodology for structural damage detection using a type of artificial intelligence that is called artificial immune system. The developed methodology includes the inspection of the structure by means of a distributed piezoelectric active sensor network at different actuation phases to define a baseline by each actuation phase using data from the structure when it is known as healthy. In a second step, same experiments are performed to the structure when its structural state is unknown to determine the presence of damage by using the developed artificial immune system. Results show that the proposed methodology allows to detect damages in the experimental setup.

  • Artificial immune systems for damage detection

     Anaya Vejar, Maribel; Tibaduiza Burgos, Diego A.; Pozo Montero, Francesc
    World Conference on Structural Control and Monitoring
    p. 1-7
    Presentation's date: 2014-07
    Presentation of work at congresses

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    Structural Health Monitoring is a growing area of interest given the benefits obtained from its use. This area includes different tasks in the damage identification process. On of the most important is the damage detection, since an early detection allows avoiding possible catastrophes in structures in service. Practical solutions require a big quantity of sensors and a robust system to process and obtain a reliable solution. In this sense, bio-inspired algorithms provide tools for an effective data analysis taking advantage of the developments provided by the nature by means of computational algorithms. As a contribution in this area, this paper presents a methodology for structural damage detection using a type of artificial intelligence that is called artificial immune system (AIS). The developed methodology includes the inspection of the structure by means of a distributed piezoelectric active sensor network at different actuation phases to define a baseline by each actuation phase using data from the structure when it is known as healthy. In a second step, the same experiments are performed to the structure when its structural state is unknown to determine the presence of damage by using the developed artificial immune system. Results show that the proposed methodology allows detecting damages in the experimental setup.

  • Structural damage classification using artificial immune system and fuzzy clustering

     Anaya Vejar, Maribel; Tibaduiza Burgos, Diego A.; Pozo Montero, Francesc
    World Conference on Structural Control and Monitoring
    p. 1-10
    Presentation's date: 2014-07
    Presentation of work at congresses

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    Structural health monitoring (SHM) is an important discipline that seeks to assess the proper performance of a structure. To achieve this objective, SHM makes use of sensors permanently installed in the structure for inspecting and defining its current state based on the analysis of structural responses. As a result, the collected structural responses are analyzed and compared with baseline patterns in order to detect abnormal characteristics and define the structural integrity. The obtained information can be used to define whether the structure can operate and under which conditions. From this point of view, the damage detection is the basis of the damage diagnosis. However, after the detection, the kind of damage presented in the structure must be identified. As a contribution to solve the damage classification problem, this work presents a methodology for the classification of some structural changes by using a data-driven methodology that is based on artificial immune systems (AIS) and fuzzy clustering. The methodology involves, in a first step, the use of a piezoelectric active system to inspect the structure in several actuation phases and collect the information from different points of the structure. In a second step, a data fusion is performed and applying the artificial immune system developed starts the analysis. As a result, an affinity and a distance measure from each experiment to each kind of damage and an antibody are obtained, by each actuation phase. Finally, these measurements are included in a fuzzy clustering algorithm to obtain the final classification. The methodology is tested in an aircraft skin panel. The experimental results proved that all structural damages were successfully classified.

  • Data-driven methodology to detect and classify structural changes under temperature variations

     Anaya, Maribel; Tibuadiza, Diego; Torres Arredondo, Miguel Angel; Pozo Montero, Francesc; Ruiz Ordoñez, Magda Liliana; Mujica Delgado, Luis Eduardo; Rodellar Benede, Jose Julian; Fritzen, Claus-Peter
    Smart materials and structures
    Vol. 23, num. 4, p. 045006-1-045006-21
    DOI: 10.1088/0964-1726/23/4/045006
    Date of publication: 2014-04-01
    Journal article

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    This paper presents a methodology for the detection and classification of structural changes under different temperature scenarios using a statistical data-driven modelling approach by means of a distributed piezoelectric active sensor network at different actuation phases. An initial baseline pattern for each actuation phase for the healthy structure is built by applying multiway principal component analysis (MPCA) to wavelet approximation coefficients calculated using the discrete wavelet transform (DWT) from ultrasonic signals which are collected during several experiments. In addition, experiments are performed with the structure in different states (simulated damages), pre-processed and projected into the different baseline patterns for each actuator. Some of these projections and squared prediction errors (SPE) are used as input feature vectors to a self-organizing map (SOM), which is trained and validated in order to build a final pattern with the aim of providing an insight into the classified states. The methodology is tested using ultrasonic signals collected from an aluminium plate and a stiffened composite panel. Results show that all the simulated states are successfully classified no matter what the kind of damage or the temperature is in both structures.

  • An isolation device for near-fault ground motions

     Ismail Abdelkareem Moustafa, Mohammed; Rodellar Benede, Jose Julian; Pozo Montero, Francesc
    Structural control & health monitoring
    Vol. 21, num. 3, p. 249-268
    DOI: 10.1002/stc.1549
    Date of publication: 2014-03-01
    Journal article

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    Seismic isolation is an appreciable control strategy that reduces the vibrations of structural and nonstructural systems induced by strong ground motions. However, under near-fault (NF) ground motion, the seismic isolation devices might perform poorly because of large isolator displacements caused by long-period large velocity and displacement pulses associated with such strong motion. The objective of this paper is to assess the effectiveness of a new seismic isolation device, referred to as roll-in-cage (RNC) isolator, in protecting against NF ground motions. The device is intended to achieve a balance in controlling isolator displacement demands and structural accelerations. The RNC isolator provides in a single unit all the necessary functions of rigid support, horizontal flexibility with enhanced stability, and energy dissipation characteristics. Moreover, it is distinguished from other isolation devices by two unique features: (i) it has a built-in energy-absorbing buffer to limit the design displacement under strong excitation, and (ii) it has a built-in linear recentering mechanism that prevents residual displacement after earthquakes. The seismic response of multistory buildings isolated by the RNC isolator is investigated under three recorded NF earthquakes and three synthetic ground motions. The results show that the RNC isolator is a convenient isolation system in protecting against NF earthquakes. Copyright (c) 2013 John Wiley & Sons, Ltd.

    Seismic isolation is an appreciable control strategy that reduces the vibrations of structural and nonstructural systems induced by strong ground motions. However, under near-fault (NF) ground motion, the seismic isolation devices might perform poorly because of large isolator displacements caused by long-period large velocity and displacement pulses associated with such strong motion. The objective of this paper is to assess the effectiveness of a new seismic isolation device, referred to as roll-in-cage (RNC) isolator, in protecting against NF ground motions. The device is intended to achieve a balance in controlling isolator displacement demands and structural accelerations. The RNC isolator provides in a single unit all the necessary functions of rigid support, horizontal flexibility with enhanced stability, and energy dissipation characteristics. Moreover, it is distinguished from other isolation devices by two unique features: (i) it has a built-in energy-absorbing buffer to limit the design displacement under strong excitation, and (ii) it has a built-in linear recentering mechanism that prevents residual displacement after earthquakes. The seismic response of multistory buildings isolated by the RNC isolator is investigated under three recorded NF earthquakes and three synthetic ground motions. The results show that the RNC isolator is a convenient isolation system in protecting against NF earthquakes.

  • Power control design for variable-speed wind turbines

     Vidal Segui, Yolanda; Acho Zuppa, Leonardo; Luo Ren, Ningsu; Zapateiro De La Hoz, Mauricio Fabian; Pozo Montero, Francesc
    DOI: 10.1201/b16587-14
    Date of publication: 2014-03
    Book chapter

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    This important book presents a selection of new research on wind turbine technology, including aerodynamics, generators and gear systems, towers and foundations, control systems, and environmental issues. This book introduces some of the basic principle of wind turbine design. The different chapters discuss ways to analyze wind turbine performance, approaches for wind turbine improvement, fault detection in wind turbines, and how to mediate the adverse effects of wind turbine use. The book is broken into four sections: the first focuses on wind turbine blade design, the second goes into detail on generators and gear systems, the third focuses on wind turbine towers and foundations, the fourth is on control systems, and the final section discusses some of the environmental issues. This informative book: ¿ introduces the principles of wind turbine design ¿ covers methods for analysis of wind turbine performance ¿ discusses approaches for wind turbine improvement and optimization ¿ covers fault detection in wind turbines ¿ discusses mediating the adverse effects of wind turbine use and installation

    This important book presents a selection of new research on wind turbine technology, including aerodynamics, generators and gear systems, towers and foundations, control systems, and environmental issues. This book introduces some of the basic principle of wind turbine design. The different chapters discuss ways to analyze wind turbine performance, approaches for wind turbine improvement, fault detection in wind turbines, and how to mediate the adverse effects of wind turbine use. The book is broken into four sections: the first focuses on wind turbine blade design, the second goes into detail on generators and gear systems, the third focuses on wind turbine towers and foundations, the fourth is on control systems, and the final section discusses some of the environmental issues. This informative book: • introduces the principles of wind turbine design • covers methods for analysis of wind turbine performance • discusses approaches for wind turbine improvement and optimization • covers fault detection in wind turbines • discusses mediating the adverse effects of wind turbine use and installation

  • A structural damage detection indicator based on principal component analysis and statistical hypothesis testing

     Mujica Delgado, Luis Eduardo; Ruiz Ordoñez, Magda Liliana; Pozo Montero, Francesc; Rodellar Benede, Jose Julian; Güemes Gordo, Alfredo
    Smart materials and structures
    Vol. 23, num. 2, p. 025014-1-025014-21
    DOI: 10.1088/0964-1726/23/2/025014
    Date of publication: 2014-02
    Journal article

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    A comprehensive statistical analysis is performed for structural health monitoring (SHM). The analysis starts by obtaining the baseline principal component analysis (PCA) model and projections using measurements from the healthy or undamaged structure. PCA is used in this framework as a way to compress and extract information from the sensor-data stored for the structure which summarizes most of the variance in a few (new) variables into the baseline model space. When the structure needs to be inspected, new experiments are performed and they are projected into the baseline PCA model. Each experiment is considered as a random process and, consequently, each projection into the PCA model is treated as a random variable. Then, using a random sample of a limited number of experiments on the healthy structure, it can be inferred using the chi(2) test that the population or baseline projection is normally distributed with mean mu(h) and standard deviation sigma(h). The objective is then to analyse whether the distribution of samples that come from the current structure (healthy or not) is related to the healthy one. More precisely, a test for the equality of population means is performed with a random sample, that is, the equality of the sample mean mu(s) and the population mean mu(h) is tested. The results of the test can determine that the hypothesis is rejected (mu(h) not equal mu(c) and the structure is damaged) or that there is no evidence to suggest that the two means are different, so the structure can be considered as healthy. The results indicate that the test is able to accurately classify random samples as healthy or not.

  • An EACS joint perspective. Recent studies in civil structural control across Europe

     Basu, Biswajit; Bursi, Oreste S.; Casciati, Fabio; Casciati, Sara; Del Grosso, Andrea E.; Domaneschi, Marco; Faravelli, Lucia; Holnicki-Szulc, Jan; Irschik, Hans; Krommer, Michael; Lepidi, Marco; Martelli, Alessandro; Ozturk, Baki; Pozo Montero, Francesc; Pujol Vazquez, Gisela; Rakicevic, Zoran; Rodellar Benede, Jose Julian
    Structural Control & Health Monitoring
    Vol. 2014
    DOI: 10.1002/stc.1652
    Date of publication: 2014
    Journal article

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  • Power control design for variable-speed wind turbines

     Vidal Segui, Yolanda; Acho Zuppa, Leonardo; Luo Ren, Ningsu; Zapateiro De La Hoz, Mauricio Fabian; Pozo Montero, Francesc
    Date of publication: 2014
    Book chapter

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    This important book presents a selection of new research on wind turbine technology, including aerodynamics, generators and gear systems, towers and foundations, control systems, and environmental issues. This book introduces some of the basic principle of wind turbine design. The different chapters discuss ways to analyze wind turbine performance, approaches for wind turbine improvement, fault detection in wind turbines, and how to mediate the adverse effects of wind turbine use. The book is broken into four sections: the first focuses on wind turbine blade design, the second goes into detail on generators and gear systems, the third focuses on wind turbine towers and foundations, the fourth is on control systems, and the final section discusses some of the environmental issues. This informative book: ¿ introduces the principles of wind turbine design ¿ covers methods for analysis of wind turbine performance ¿ discusses approaches for wind turbine improvement and optimization ¿ covers fault detection in wind turbines ¿ discusses mediating the adverse effects of wind turbine use and installation

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    Nuevo ciclo para el proyecto de investigación e innovación en metodologías del aprendizaje (RIMA)  Open access

     Torra Bitlloch, Immaculada; Pozo Montero, Francesc; Salán Ballesteros, Mª Núria; Adam Salvatierra, Araceli
    Congreso de la Red Estatal de Docencia Universitaria (RED-U)
    p. 1-10
    Presentation's date: 2013-11-27
    Presentation of work at congresses

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    El proyecto RIMA (Recerca i Innovació en Metodologies d¿Aprenentatge / Investigacio´n e innovación en metodologías de aprendizaje) es un proyecto institucional de la Universitat Politècnica de Catalunya ¿ UPC BarcelonaTech, desarrollado por el Instituto de Ciencias de la Educación de esta universidad. El proyecto engloba grupos de profesorado generados entorno al interés por temáticas relacionadas con la mejora y la innovación docente universitaria. Después de un ciclo largo de 6 años que ha llevado a la constitución de 17 grupos de interés dentro del proyecto, se inicia ahora una nueva etapa que quedará constituida en enero de 2014 y se desarrollará durante un período de dos años naturales (2014 y 2015). Una nueva etapa que ha de conducir al proyecto a reforzar su carácter institucional para configurar un entorno de trabajo, si cabe más sólido, para facilitar el desarrollo del profesorado en el marco de los grupos y hacer confluir su trabajo con un modelo de universidad que les facilite un mayor apoyo.

    El proyecto RIMA (Recerca i Innovació en Metodologies d’Aprenentatge / Investigación e innovación en metodologías de aprendizaje) es un proyecto institucional de la Universitat Politècnica de Catalunya – UPC BarcelonaTech, desarrollado por el Instituto de Ciencias de la Educación de esta universidad. El proyecto engloba grupos de profesorado generados entorno al interés por temáticas relacionadas con la mejora y la innovación docente universitaria. Después de un ciclo largo de 6 años que ha llevado a la constitución de 17 grupos de interés dentro del proyecto, se inicia ahora una nueva etapa que quedará constituida en enero de 2014 y se desarrollará durante un período de dos años naturales (2014 y 2015). Una nueva etapa que ha de conducir al proyecto a reforzar su carácter institucional para configurar un entorno de trabajo, si cabe más sólido, para facilitar el desarrollo del profesorado en el marco de los grupos y hacer confluir su trabajo con un modelo de universidad que les facilite un mayor apoyo.

  • Access to the full text
    Uso del vídeo (pencast) para el aprendizaje de matemáticas: La experiencia en la UPC  Open access

     Pozo Montero, Francesc; Parés Mariné, Núria; Vidal Segui, Yolanda
    Jornadas Internacionales de Innovación Universitaria
    p. 990-997
    Presentation's date: 2013-07-11
    Presentation of work at congresses

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    Las asignaturas de matemáticas en estudios de ingeniería suelen ser unas de las asignaturas con índices de rendimiento más bajo. Diversas pueden ser las explicaciones que justifican este hecho: un cambio en la notación matemática, el nivel de conocimientos previos o la falta de conexión de los contenidos matemáticos con la práctica de la ingeniería. Lo que se presenta en esta comunicación es una experiencia de generación de vídeos en la Escola Universitària d¿Enginyeria Tècnica Industrial de Barcelona (EUETIB), centro adscrito de la Universitat Politècnica de Catalunya- BarcelonaTech (UPC), con el objetivo de mejorar la comprensión de los conceptos matemáticos y su verbalización.

  • Power regulation of wind turbines using torque and pitch Control

     Pozo Montero, Francesc; Vidal Segui, Yolanda; Acho Zuppa, Leonardo; Luo Ren, Ningsu; Zapateiro De La Hoz, Mauricio Fabian
    American Control Conference
    p. 6501-6506
    Presentation's date: 2013-06-19
    Presentation of work at congresses

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    Power generation control in variable-speed variable-pitch horizontal-axis wind turbines operating at high wind speeds is considered in this work. A torque and pitch control strategies are proposed, implemented and validated using the National Renewable Energy Laboratory wind turbine simulator FAST (Fatigue, Aerodynamics, Structures, and Turbulence) code. Numerical results show that the proposed controllers are effective for power regulation. The performance of the contributed controllers is compared to some state-of-the-art methodologies showing its improvements.

  • Experimental study of semiactive VSC techniques for vehicle vibration reduction

     Pozo Montero, Francesc; Zapateiro De La Hoz, Mauricio Fabian; Acho Zuppa, Leonardo; Vidal Segui, Yolanda; Luo Ren, Ningsu
    Journal of the Franklin Institute
    Vol. 350, num. 1, p. 1-18
    DOI: 10.1016/j.jfranklin.2012.11.008
    Date of publication: 2013-02
    Journal article

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    Wiris Quizzes: Un sistema de evaluación continua con feedback automático para el aprendizaje de matemáticas en línea  Open access

     Calm, Remei; Masià, Ramon; Olivé, Carme; Parés Mariné, Núria; Pozo Montero, Francesc; Ripoll, Jordi; Sancho Vinuesa, Teresa
    Teoría de la educación. Educación y cultura en la sociedad de la información ¿ TESI
    Vol. 14, num. 2, p. 452-472
    Date of publication: 2013
    Journal article

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    En estudios en línea de ingeniería, el seguimiento del proceso de aprendizaje de los estudiantes de matemáticas así como el sistema de evaluación son aspectos clave de la estrategia docente. En este artículo se presenta un sistema de evaluación continua con feedback automático, basado en la realización de cuestionarios Wiris Quizzes durante un curso de análisis matemático en la Universitat Oberta de Catalunya. Dichos cuestionarios, con enunciados parametrizados, funcionan en el entorno de Moodle con el soporte del programa de cálculo simbólico Wiris (www.wiris.com). Los resultados de la experiencia docente con esta metodología en una aula con 65 estudiantes y la comparación con los de semestres anteriores son claramente positivos: (a) el número de estudiantes que siguen la evaluación continua se mantiene estable; (b) la media de las notas de la evaluación continua aumenta de forma considerable; (c) el número de estudiantes que suspenden la asignatura se ha reducido significativamente y (d) la valoración que los estudiantes hacen de la asignatura, de sus contenidos y de los recursos que se ponen a su disposición ha mejorado notablemente.

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    Integración de texto y vídeo en un nuevo recurso para el aprendizaje de matemáticas en línea  Open access

     Calm, Remei; Ripoll, Jordi; Olivé Farré, Carme; Masià, Ramon; Sancho-Vinuesa, Teresa; Parés Mariné, Núria; Pozo Montero, Francesc
    IE Comunicaciones
    num. 17, p. 23-31
    Date of publication: 2013
    Journal article

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    Las características especiales del aprendizaje en línea conllevan la necesidad de disponer de materiales adaptados. El feedback con los estudiantes denota que la notación matemática y los conocimientos previos son a menudo los grandes escollos a superar para la comprensión de la materia. Todo ello ha guiado nuestro esfuerzo por mejorar la calidad de la enseñanza que impartimos, buscando nuevos recursos educativos que ayuden a paliar los problemas detectados. En este documento se presenta la experiencia de la integración de texto y video en un recurso utilizado en asignaturas de Análisis Matemático. Justificamos su elección y detallamos su uso a lo largo de un semestre. Finalmente, hacemos un análisis estadístico de los datos disponibles, que nos lleva a la conclusión que existe una clara tendencia de mejora de los resultados académicos.

  • Matemáticas para la ingeniería. Teoría y problemas resueltos.

     Pozo Montero, Francesc; Parés Mariné, Núria; Vidal Segui, Yolanda
    Date of publication: 2013
    Book

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  • Red de Investigación Cooperativa en monitorización, control de vibraciones y detección de daños en estructuras inteligentes

     Rodellar Benede, Jose Julian; Mujica Delgado, Luis Eduardo; Pozo Montero, Francesc; Ruiz Ordoñez, Magda Liliana
    Competitive project

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  • Wiris Quizzes: An automatic and self-study tool for online mathematics: The teaching experience in engineering courses at Universitat Oberta de Catalunya

     Calm Puig, Remei; Ripoll, Jordi; Masia Fornos, Ramon; Sancho Vinuesa, Teresa; Olivé Farré, Carme; Parés Mariné, Núria; Pozo Montero, Francesc
    International Symposium on Computers in Education
    p. 1-6
    Presentation's date: 2012-10
    Presentation of work at congresses

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  • The effectiveness of video in on-line maths courses: The teaching experience in engineering courses at Universitat Oberta de Catalunya

     Calm Puig, Remei; Ripoll, Jordi; Olivé Farré, Carme; Masià, Ramon; Sancho Vinuesa, Teresa; Parés Mariné, Núria; Pozo Montero, Francesc
    International Symposium on Computers in Education
    p. 1-6
    Presentation's date: 2012-10
    Presentation of work at congresses

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  • Discrete-time adaptive control of nonlinear base isolated structures

     Pozo Montero, Francesc; Rodellar Benede, Jose Julian; Ismail Abdelkareem Moustafa, Mohammed
    International journal of innovative computing information and control
    Vol. 8, num. 9, p. 6357-6370
    Date of publication: 2012-09
    Journal article

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  • Hybrid RNC-isolation of structures under near-fault earthquakes

     Ismail Abdelkareem Moustafa, Mohammed; Pozo Montero, Francesc; Rodellar Benede, Jose Julian
    American Control Conference
    p. 6132-6139
    Presentation's date: 2012-06-29
    Presentation of work at congresses

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  • Robust fault detection in hysteretic base-isolation systems

     Vidal Segui, Yolanda; Acho Zuppa, Leonardo; Pozo Montero, Francesc
    Mechanical systems and signal processing
    Vol. 29, p. 447-456
    DOI: 10.1016/j.ymssp.2011.11.025
    Date of publication: 2012-05
    Journal article

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  • Power control design for variable-speed wind turbines

     Vidal Segui, Yolanda; Acho Zuppa, Leonardo; Luo Ren, Ningsu; Zapateiro De La Hoz, Mauricio Fabian; Pozo Montero, Francesc
    Energies
    Vol. 5, num. 8, p. 3033-3050
    DOI: 10.3390/en5083033
    Date of publication: 2012
    Journal article

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  • Semiactive control methodologies for suspension control with magnetorheological dampers

     Zapateiro De La Hoz, Mauricio Fabian; Pozo Montero, Francesc; Karimi, Hamid Reza; Luo Ren, Ningsu
    IEEE-ASME transactions on mechatronics
    Vol. 17, num. 2, p. 370-380
    DOI: 10.1109/TMECH.2011.2107331
    Date of publication: 2012
    Journal article

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    Suspension systems are one of the most critical components of transportation vehicles. They are designed to provide comfort to the passengers to protect the chassis and the freight. Suspension systems are normally provided with dampers that mitigate these harmful and uncomfortable vibrations. In this paper, we explore two control methodologies (in time and frequency domain) used to design semiactive controllers for suspension systems that make use of magnetorheological dampers. These dampers are known because of their nonlinear dynamics, which requires the use of nonlinear control methodologies for an appropriate performance. The first methodology is based on the backstepping technique, which is applied with adaptation terms and H∞ constraints. The other methodology to be studied is the quantitative feedback theory (QFT). Despite QFT is intended for linear systems, it can still be applied to nonlinear systems. This can be achieved by representing the nonlinear dynamics as a linear system with uncertainties that approximately represents the true behavior of the plant to be controlled. The semiactive controllers are simulated in MATLAB/Simulink for performance evaluation.

  • Estructuras inteligentes: sistemas de monitorización e identificación de daños con aplicación en aeronáutica y en plantas eólicas

     Rodellar Benede, Jose Julian; Mujica Delgado, Luis Eduardo; Vidal Segui, Yolanda; Pozo Montero, Francesc
    Competitive project

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  • On variable structure control approaches to semiactive control of a quarter car system

     Zapateiro De La Hoz, Mauricio Fabian; Pozo Montero, Francesc; Luo Ren, Ningsu
    DOI: 10.5772/2586
    Date of publication: 2012
    Book chapter

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  • Damage detection index based on hypothesis testing for the difference in population means

     Mujica Delgado, Luis Eduardo; Rodellar Benede, Jose Julian; Güemes, Alfredo; Pozo Montero, Francesc; Ruiz Ordoñez, Magda Liliana
    European Workshop on Structural Health Monitoring & European Conference On Prognostics and Health Management
    Presentation of work at congresses

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  • Hexapod platform positioning control

     Arruga Cantalapiedra, Sergio; Pozo Montero, Francesc; Zapateiro De La Hoz, Mauricio Fabian
    Seminar for Advanced Industrial Control Applications
    p. 7-12
    Presentation's date: 2011-11
    Presentation of work at congresses

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  • Near-fault hybrid pounding mitigation of RNC-isolated structures

     Ismail Abdelkareem Moustafa, Mohammed; Pozo Montero, Francesc; Rodellar Benede, Jose Julian
    Seminar for Advanced Industrial Control Applications
    p. 13-21
    Presentation's date: 2011-11
    Presentation of work at congresses

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  • Chattering control design on a variable-speed horizontal-axis wind turbine

     Acho Zuppa, Leonardo; Vidal Segui, Yolanda; Pozo Montero, Francesc; Zapateiro De La Hoz, Mauricio Fabian; Luo Ren, Ningsu
    Seminar for Advanced Industrial Control Applications
    p. 70-76
    Presentation's date: 2011-11
    Presentation of work at congresses

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    Damage detection index based on statistical inference and PCA  Open access

     Mujica Delgado, Luis Eduardo; Ruiz Ordoñez, Magda Liliana; Pozo Montero, Francesc; Rodellar Benede, Jose Julian
    International Workshop on Structural Health Monitoring
    Presentation's date: 2011-09-12
    Presentation of work at congresses

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    This paper is focused on the development of new estimators propounding if someone statistical law could estimate or infer a system without damage knowing its reliability. This new measurement considers each experiment, and consequently, each projection to the PCA model as a random variable. An in-depth statistical analysis is performed for SHM. PCA projections are obtained from the undamaged structure (baseline projection). If these projections are considered as the set of possible results (population), then the new projections from the current structure (healthy or not) are defined as random samples. Therefore, the probability distribution of the baseline projection can be found. This new distribution can make an inference about the state of the structure and determine if there is damage in it. Consequently, the relative likelihood of each new projection is determined. If the new projection is strongly related with the population, then the structure is healthy. Otherwise, the relation indicates the damage.

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    A velocity based active vibration control of hysteretic systems  Open access

     Pozo Montero, Francesc; Pujol Vazquez, Gisela; Acho Zuppa, Leonardo; Rodriguez Tsouroukdissian, Arturo; Vidal Segui, Yolanda
    World Congress of the International Federation of Automatic Control
    p. 5243-5248
    Presentation's date: 2011-08-30
    Presentation of work at congresses

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    Landing gear suspension control through adaptive backstepping techniques with H-infinity performance  Open access

     Pozo Montero, Francesc; Zapateiro De La Hoz, Mauricio Fabian; Rossell Garriga, Josep Maria; Karimi, Hamid Reza; Luo Ren, Ningsu
    World Congress of the International Federation of Automatic Control
    p. 4809-4814
    Presentation's date: 2011-08-28
    Presentation of work at congresses

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    Landing gear suspension systems ful ll the tasks of absorbing the vertical energy of the touch-down as well as providing passenger and crew comfort with a smooth ground ride before take-o and after landing. They are also designed to have optimal performance in the case of a hard landing. In general, the tasks of aircraft landing gears are complex and sometimes lead to a number of contradictory requirements. Although there are existing modi cations of aircraft shock absorbers to reduce the problem, the basic design con ict between the requirements for landing and for rolling cannot be fully overcome by a passive suspension layout. Active and semiactive suspension techniques are a solution to this problem and are capable of reducing fuselage vibrations e ectively. In order to get satisfactory damping performance with active and semiactive devices, appropriate control laws must be employed. In this paper, we study the use of an adaptive backstepping control with H-infinity performance to cope with disturbances, uncertainties and nonlinearities, typical of suspension systems and damping devices. A comparison between active and semiactive strategies is provided through the analysis of simulation results

  • Sistemas de autoaprendizaje y autoevaluación dentro de la plataforma Atenea

     Vidal Segui, Yolanda; Parés Mariné, Núria; Pozo Montero, Francesc; Tura Brugués, Jordi
    Congreso Universitario de Innovación Educativa en las Enseñanzas Técnicas
    p. 1-8
    Presentation's date: 2011-07-08
    Presentation of work at congresses

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    Control of base-isolated systems using force feedback  Open access

     Pozo Montero, Francesc; Rodríguez Tsouroukdissian, Arturo; Acho Zuppa, Leonardo; Vidal Segui, Yolanda; Rodellar Benede, Jose Julian
    American Control Conference
    p. 2510-2515
    Presentation's date: 2011-06-30
    Presentation of work at congresses

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  • A fault detection method for hysteretic base-isolation systems

     Vidal Segui, Yolanda; Acho Zuppa, Leonardo; Rodellar Benede, Jose Julian; Pozo Montero, Francesc
    Date of publication: 2011-02
    Book chapter

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  • A velocity based active vibration control of hysteretic systems

     Pujol Vazquez, Gisela; Acho Zuppa, Leonardo; Pozo Montero, Francesc; Rodriguez, Arturo; Vidal Segui, Yolanda
    Mechanical systems and signal processing
    Vol. 25, num. 1, p. 465-474
    DOI: 10.1016/j.ymssp.2010.08.011
    Date of publication: 2011-01
    Journal article

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  • Force-derivative feedback semi-active control of base-isolated buildings using large-scale MR fluid dampers

     Rodríguez, Arturo; Pozo Montero, Francesc; Bahar, Arash; Acho Zuppa, Leonardo; Vidal Segui, Yolanda; Rodellar Benede, Jose Julian
    Structural control & health monitoring
    Vol. 19, num. 1, p. 120-145
    DOI: 10.1002/stc.430
    Date of publication: 2011
    Journal article

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    Force-derivative feedback semi-active control of base-isolated buildings using large-scale MR fluid dampers  Open access

     Pozo Montero, Francesc; Rodriguez Tsouroukdissian, Arturo; Acho Zuppa, Leonardo; Vidal Segui, Yolanda; Rodellar Benede, Jose Julian
    International Conference on Structural Dynamics
    p. 1839-1845
    Presentation's date: 2011
    Presentation of work at congresses

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  • Probabilitat i estadística matemàtica

     Parés Mariné, Núria; Vidal Segui, Yolanda; Pozo Montero, Francesc; Mazaira Font, Ferran
    Date of publication: 2010-12
    Book

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  • Fault detection in base-isolation systems via a restoring force observer

     Vidal Segui, Yolanda; Acho Zuppa, Leonardo; Pozo Montero, Francesc; Rodellar Benede, Jose Julian
    International Conference on Control and Fault-Tolerant Systems
    p. 777-782
    Presentation's date: 2010-10-08
    Presentation of work at congresses

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    Active control of hysteretic base-isolated structures via delayed signals  Open access

     Acho Zuppa, Leonardo; Luo Ren, Ningsu; Vidal Segui, Yolanda; Pozo Montero, Francesc
    World Conference on Structural Control and Monitoring
    p. 1-8
    Presentation's date: 2010-07
    Presentation of work at congresses

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    Force-derivative feedback semi-active control of base-isolated buildings using large-scale MR fluid dampers  Open access

     Rodriguez Tsouroukdissian, Arturo; Bahar, Arash; Pozo Montero, Francesc; Acho Zuppa, Leonardo; Vidal Segui, Yolanda; Rodellar Benede, Jose Julian
    World Conference on Structural Control and Monitoring
    p. 1-32
    Presentation's date: 2010-07
    Presentation of work at congresses

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  • Fault detection in hysteretic base-isolation systems via a seismic disturbance observer

     Rodriguez Tsouroukdissian, Arturo; Vidal Segui, Yolanda; Acho Zuppa, Leonardo; Pozo Montero, Francesc
    World Conference on Structural Control and Monitoring
    p. 1-8
    Presentation's date: 2010-07
    Presentation of work at congresses

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  • Robust variable speed control of a wind turbine

     Acho Zuppa, Leonardo; Vidal Segui, Yolanda; Pozo Montero, Francesc
    International journal of innovative computing information and control
    Vol. 6, num. 4, p. 1925-1933
    Date of publication: 2010-04
    Journal article

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