Now showing items 1-20 of 48

  • An alternative discrete-time model for networked control systems with time delay less than the sampling period 

    Torres Guerrero, Gina; Velasco García, Manel; Martí Colom, Pau; Martín Rull, Enric Xavier; Fuertes Armengol, José Mª (2013)
    Conference lecture
    Restricted access - publisher's policy
    The majority of existing Networked Control Systems (NCS) models are discrete-time formulations based on the exact discretization of the continuous-time linear plant over a sample interval. In the state-space formalism, ...
  • Analysis of consensus-based islanded microgrids subject to unexpected electrical and communication partitions 

    Rosero Chandi, Carlos Xavier; Velasco García, Manel; Martí Colom, Pau; Camacho Santiago, Antonio; Miret Tomàs, Jaume; Castilla Fernández, Miguel (Institute of Electrical and Electronics Engineers (IEEE), 2018-01-01)
    Article
    Open Access
    Microgrids are power systems consisting of an electrical network composed by distributed loads and generation units that may include a communication network for improved operation. The considered microgrid in islanded mode ...
  • Analysis of the effect of clock drifts on frequency regulation and power sharing in inverter-based islanded microgrids 

    Martí Colom, Pau; Torres Martínez, Javier; Rosero, Carlos Xavier; Velasco García, Manel; Miret Tomàs, Jaume; Castilla Fernández, Miguel (2018-02-12)
    Article
    Open Access
    Local hardware clocks in physically distributed computation devices hardly ever agree because clocks drift apart and the drift can be different for each device. This paper analyses the effect that local clock drifts have ...
  • Cálculo de la odometría en un robot cuadrúpedo mediante técnicas de visión artificial 

    Lillo Fantova, Lucía; Velasco García, Manel; Angulo Bahón, Cecilio (2015)
    Conference lecture
    Restricted access - publisher's policy
    En una primera fase, se hizo posible publicar las imágenes obtenidas por la cámara del robot AIBO a través del entorno de programacion ROS, un estándar en la programacion de robots moviles. Estas imágenes, pueden ser ...
  • Communication-aware consensus for frequency restoration in islanded microgrids 

    Martí Colom, Pau; Velasco García, Manel; Martín Rull, Enric Xavier; Castilla Fernández, Miguel; Miret Tomàs, Jaume; Camacho Santiago, Antonio (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Conference report
    Restricted access - publisher's policy
    MicroGrids (MGs) include spatially distributed generation (DG) systems and loads that may require operating autonomously in islanded mode. The operation of islanded MGs can benefit from consensus theory and practice, ...
  • Comparative study of reactive power control methods for photovoltaic inverters in low-voltage grids 

    Momeneh, Arash; Castilla Fernández, Miguel; Miret Tomàs, Jaume; Martí Colom, Pau; Velasco García, Manel (2016-03-01)
    Article
    Open Access
    The increasing installation of photovoltaic panels in low-voltage grids causes an over voltage problem, especially during high production and low consumption periods. Generally the over voltage problem is overcome by ...
  • Conectando el Robot AIBO a ROS: Extracción de imágenes 

    Lillo Fantova, Lucía; Téllez Lara, Ricardo; Velasco García, Manel; Angulo Bahón, Cecilio (2015)
    Conference report
    Open Access
    En este documento se realiza una introduccion al trabajo realizado con el robot AIBO, de Sony, para la obtencion de imagenes, asi como su tratamiento con el objetivo que el robot navegue de forma autonoma mediante algoritmos ...
  • Consensus for active power sharing and frequency restoration in islanded microgrids subject to drifting clocks 

    Rosero Chandi, Carlos Xavier; Martí Colom, Pau; Velasco García, Manel; Castilla Fernández, Miguel; Miret Tomàs, Jaume; Camacho Santiago, Antonio (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Conference report
    Restricted access - publisher's policy
    The application of consensus theory in the control of islanded microgrids (MG) is gaining increased attention because it facilitates the development of distributed control solutions. In particular, its application to active ...
  • Designing a practical course in networked control systems 

    Fuertes Armengol, José Mª; Villa Millaruelo, Ricardo; Ayza Graells, Jordi; Marès Martí, Pere; Martí Colom, Pau; Velasco García, Manel; Yépez Castillo, José Gregorio; Torres Guerrero, Gina; Perelló, Miquel (2012)
    Conference report
    Open Access
    This paper presents a hands-on course in networked control systems (NCS) to be integrated in the education of embedded control systems engineers. The course activities have a strong practical component and most of them are ...
  • Design of a hands-on course in networked control systems 

    Fuertes Armengol, José Mª; Villa Millaruelo, Ricardo; Ayza Graells, Jordi; Marès Martí, Pere; Martí Colom, Pau; Velasco García, Manel; Yépez Castillo, José Gregorio; Torres Guerrero, Gina (2012-01-17)
    External research report
    Open Access
    This report presents a hands-on course in networked control systems (NCS) to be integrated in the education of embedded control systems engineers. The course activities have a strong practical component and most of them ...
  • Design of an embedded control system laboratory experiment 

    Martí Colom, Pau; Velasco García, Manel; Fuertes Armengol, José Mª; Camacho Santiago, Antonio; Buttazzo, Giorgio (2010-02-08)
    Article
    Open Access
  • Design of an embedded control system laboratory experiment 

    Martí Colom, Pau; Velasco García, Manel; Fuertes Armengol, José Mª; Camacho Santiago, Antonio; Buttazzo, Giorgio (IEEE Press. Institute of Electrical and Electronics Engineers, 2010-10-01)
    Article
    Restricted access - publisher's policy
    This paper presents a prototype laboratory experiment to be integrated in the education of embedded control system engineers. The experiment, a real-time control of a dynamical system, is designed to drive students to a ...
  • Distributed reactive power control methods to avoid voltage rise in grid-connected photovoltaic power generation systems 

    Martí Colom, Pau; Velasco García, Manel; Fuertes Armengol, José Mª; Camacho Santiago, Antonio; Miret Tomàs, Jaume; Castilla Fernández, Miguel (2013)
    Conference report
    Restricted access - publisher's policy
    A high density of grid-connected photovoltaic (PV) power generation systems is expected to occur in urban areas. The connection of distributed generation (DG) may cause serious problems in the distribution system such ...
  • Efficient utilization of bus idle times in CAN-based networked control systems 

    Martí Colom, Pau; Camacho Santiago, Antonio; Velasco García, Manel; El Mongi Ben Gaid, Mohamed (2010)
    Conference lecture
    Open Access
    This paper presents a novel approach to networked control systems (NCS) analysis and design that provides increased control performance for a set of control loops that exchange control data over the Controller Area Network ...
  • Embedding Kalman techniques in the one-shot task model when non-uniform samples are corrupted by noise 

    Lozoya, Camilo; Romero, Julio; Martí Colom, Pau; Velasco García, Manel; Fuertes Armengol, José Mª (IEEE Press. Institute of Electrical and Electronics Engineers, 2010)
    Conference report
    Open Access
    The performance of several closed-loop systems whose controllers concurrently execute in a multitasking realtime system may be deteriorated due to timing uncertainties in tasks´executions, problem known as scheduling ...
  • Equilibrio del robot AIBO usando DMPs 

    Salord, Lluís; Angulo Bahón, Cecilio; Velasco García, Manel (2015)
    Conference report
    Open Access
    El trabajo presentado se enmarca en una iniciativa global que tiene como objeto la recuperacion de la plataforma robotica AIBO de Sony. Para demostrar las prestaciones de la arquitectura propuesta y la viabilidad del robot ...
  • Equilibrium sampling interval sequences for event-driven controllers 

    Velasco García, Manel; Martí Colom, Pau; Bini, Enrico (2009)
    Conference report
    Restricted access - publisher's policy
    Standard discrete-time control laws consider periodic execution of control jobs. Although this assumption simplifies the control design and the resource utilization analysis for later implementation, it leads to a ...
  • Hands-on course in networked control systems 

    Fuertes Armengol, José Mª; Villa Millaruelo, Ricardo; Ayza Graells, Jordi; Marès Martí, Pere; Martí Colom, Pau; Velasco García, Manel; Yepez, J.; Torres Guerrero, Gina; Perello, M. (2012)
    Conference lecture
    Restricted access - publisher's policy
    In many industrial robotic applications there is a need to track periodic reference signals and/or reject periodic disturbances. This paper presents a novel repetitive control design for systems with constant time-delays ...
  • Impact of clock drifts on communication-free secondary control schemes for inverter-based islanded microgrids 

    Castilla Fernández, Miguel; Camacho Santiago, Antonio; Martí Colom, Pau; Velasco García, Manel; Moradi Ghahderijani, Mohammad (Institute of Electrical and Electronics Engineers (IEEE), 2017-11-13)
    Article
    Restricted access - publisher's policy
    IEEE In inverter-based microgrids, individual inverters operate usually with its own digital processor. The clocks used to generate the time signals of these processors differ from each other due to clock drifts. This paper ...
  • Internet-based control of a ball-and-plate system: a case study of modeling and automatic code generation for networked control systems 

    Torres Guerrero, Gina; Martín Rull, Enric Xavier; Velasco García, Manel; Martí Colom, Pau; Camacho, Antonio (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Conference report
    Restricted access - publisher's policy
    The evolution of technology and application needs leads to design complex systems both at hardware and software levels. Modeling approaches and automatic code generation are mature techniques in several application areas ...