Ara es mostren els items 27-40 de 40

    • Real-time leak diagnosis in water distribution systems based on a bank of observers and a genetic algorithm 

      Navarro Díaz, Adrián; Delgado-Aguiñaga, J.A.; Puig Cayuela, Vicenç; Santos Ruiz, Ildeberto de los (2022-10-18)
      Article
      Accés obert
      The main contribution of this paper is to present a novel solution for the leak diagnosis problem in branched pipeline systems considering the availability of pressure head and flow rate sensors on the upstream (unobstructed) ...
    • Real-time model-based video stabilization for microaerial vehicles 

      Aguilar Castillo, Wilbert Geovanny; Angulo Bahón, Cecilio (2016-04)
      Article
      Accés obert
      The emerging branch of micro aerial vehicles (MAVs) has attracted a great interest for their indoor navigation capabilities, but they require a high quality video for tele-operated or autonomous tasks. A common problem of ...
    • Receding-horizon model predictive control for a three-phase VSI with an LCL filter 

      Guzmán Solà, Ramon; García de Vicuña Muñoz de la Nava, José Luis; Camacho Santiago, Antonio; Miret Tomàs, Jaume; Rey, Juan M (Institute of Electrical and Electronics Engineers (IEEE), 2018-11-20)
      Article
      Accés obert
      This paper presents a Continuous Control Set Model Predictive Control with receding horizon for a threephase voltage source inverter with LCL filter, using a reduced model of the converter. The main advantages of using ...
    • Retrieval of boundary layer height from lidar using extended Kalman filter approach, classic methods, and backtrajectory cluster analysis 

      Banks, Robert Franklin; Tiana Alsina, Jordi; Baldasano Recio, José María; Rocadenbosch Burillo, Francisco (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This contribution evaluates an approach using an extended Kalman filter (EKF) to estimate the planetary boundary layer height (PBLH) from lidar measurements obtained in the framework of the European Aerosol Research LIdar ...
    • Review of local network impedance estimation techniques 

      Kervyn De Meerendre, Mathieu; Prieto Araujo, Eduardo; Ahmed, Khaled H.; Gomis Bellmunt, Oriol; Xu, Lie; Egea Àlvarez, Agustí (Institute of Electrical and Electronics Engineers (IEEE), 2020-11-24)
      Article
      Accés obert
      As a result of increasing variability of network impedance, interest in impedance estimation techniques is growing. This review contextualises local impedance estimation techniques by providing a historical prospective on ...
    • Sensor selection and distributed quantization for energy efficiency in massive MTC 

      Liesegang Maria, Sergi; Muñoz Medina, Olga; Pascual Iserte, Antonio (2021-12)
      Article
      Accés obert
      This paper presents an estimation approach within the framework of uplink massive machine-type-communications (mMTC) that considers the energy limitations of the devices. We focus on a scenario where a group of sensors ...
    • Sliding-mode control for a three-phase shunt active power filter in natural frame 

      Guzmán Solà, Ramon; García de Vicuña Muñoz de la Nava, José Luis; Morales López, Javier; Castilla Fernández, Miguel; Miret Tomàs, Jaume; Torres Martínez, Javier (2015)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper presents an improved variable hysteresis-band current-control in natural frame for a three-phase shunt active power filter. The proposed control algorithm is based on three decoupled sliding-mode controllers ...
    • Synergetic use of lidar and microwave radiometer observations for boundary-layer height detection 

      Saeed, Umar; Rocadenbosch Burillo, Francisco; Crewell, Susanne (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      A synergetic approach for estimation of the nocturnal stable boundarylayer (SBL) height is presented. Aerosol backscatter from a lidar ceilometer and potential temperature from a microwave radiometer (MWR) are combined ...
    • The formulation of structural time series models in discrete and continuous time 

      Harvey, A. C. (Universitat Politècnica de Barcelona. Centre de Càlcul, 1983-12)
      Article
      Accés obert
      This paper sets out an approach for modelling univariate time series, including those in which observations are available on a daily basis. An underlying continuous time model is formulated and it is shown that this model ...
    • The selection of basic functions for a time-varying model of unmodeled errors in medium and long GNSS baselines 

      Wang, Jiafu; Yu, Xianwen; Aragón Ángel, María Ángeles; Rovira Garcia, Adrià; Wang, Hao (Multidisciplinary Digital Publishing Institute (MDPI), 2023-10-19)
      Article
      Accés obert
      Unmodeled errors play a critical role in improving the positioning accuracy of Global Navigation Satellite Systems. Few studies have addressed unmodeled errors in medium and long baselines using their time correlation, ...
    • Time-Varying Market Beta: Does the estimation methodology matter? 

      Nieto, Belén; Orbe, Susan; Zarraga, Ainoha (Institut d'Estadística de Catalunya, 2014-06-12)
      Article
      Accés obert
      This paper compares the performance of nine time-varying beta estimates taken from three different methodologies never previously compared: least-square estimators including nonparametric weights, GARCH-based estimators ...
    • Tracking by detection using YOLO and Kalman filtering 

      Quintana Aguasca, Èric (Universitat Politècnica de Catalunya, 2021-06)
      Treball Final de Grau
      Accés obert
      Realitzat a/amb:   Technische Universität Wien
      This thesis presents an implementation for tracking by detection using YOLO and Kalman filter. This system allows detections with YOLO for a concrete object in a video sequence, then the Kalman filter models the motion and ...
    • Variable structure control in natural frame for three-phase grid-connected inverters with LCL filter 

      Guzmán Solà, Ramon; García de Vicuña Muñoz de la Nava, José Luis; Castilla Fernández, Miguel; Miret Tomàs, Jaume; Martín Cañadas, María Elena (2017-07-05)
      Article
      Accés obert
      This paper presents a variable structure control in natural frame for a three-phase voltage source inverter. The proposed control method is based on modifying the converter model in natural reference frame, preserving the ...
    • Vision-based absolute navigation for the Martian landing 

      Martínez Torío, Alexandra (Universitat Politècnica de Catalunya, 2013-12-09)
      Projecte Final de Màster Oficial
      Accés restringit per decisió de l'autor
      Future European missions aspire to bring soil samples from Mars back to Earth. The precise identification of the site from which samples are taken leads to major constraints as to the landing accuracy of the lander. ...