Now showing items 1-20 of 52

    • A combined methodology of adaptive neuro-fuzzy inference system and genetic algorithm for short-term energy forecasting 

      Kampouropoulos, Konstantinos; Andrade Rengifo, Fabio; García Espinosa, Antonio; Romeral Martínez, José Luis (2014-02)
      Article
      Open Access
      This document presents an energy forecast methodology using Adaptive Neuro-Fuzzy Inference System (ANFIS) and Genetic Algorithms (GA). The GA has been used for the selection of the training inputs of the ANFIS in order to ...
    • A computer model for teaching the dynamic behavior of AC contactors 

      Riba Ruiz, Jordi-Roger; García Espinosa, Antonio; Romeral Martínez, José Luis (2010-05)
      Article
      Open Access
      AC-powered contactors are extensively used in industry in applications such as automatic electrical devices, motor starters, and heaters. In this work, a practical session that allows students to model and simulate the ...
    • A genetic algorithm approach to optimization of power peaks in an automated warehouse 

      Cárdenas Araújo, Juan José; García Espinosa, Antonio; Romeral Martínez, José Luis; Andrade Rengifo, Fabio (IEEE Press. Institute of Electrical and Electronics Engineers, 2009)
      Conference report
      Open Access
      The simultaneous operation of the automated storage and retrieval machines (ASRs) in an automated warehouse can increase the likelihood that high power demand peaks turn unstable the electric system. Furthermore, high ...
    • A multi-objective GA to demand-side management in an automated warehouse 

      Cárdenas Araújo, Juan José; García Espinosa, Antonio; Romeral Martínez, José Luis; Urresty Betancourt, Julio César (2009)
      Conference report
      Open Access
      The simultaneous operation of the automated storage and retrieval machines (ASRs) in an automated warehouse can increase the likelihood that high power demand peaks turn unstable the electric system. Furthermore, high ...
    • A new auto-provisioned squat-based traffic management strategy for multiclass networks 

      Hesselbach Serra, Xavier; García Espinosa, Antonio (2009)
      Conference report
      Open Access
      In search of being able to offer better quality of service (QoS) in multiclass networks, a strategy that aims to allow resources between different classes of service (CoS) to be shared according to the class’s needs and ...
    • A novel condition monitoring scheme for bearing faults based on Curvilinear Component Analysis and hierarchical neural networks 

      Delgado Prieto, Miquel; Cirrincione,, Giansalvo; García Espinosa, Antonio; Ortega Redondo, Juan Antonio; Henao, Humberto (2012)
      Conference report
      Restricted access - publisher's policy
      Mostly the faults in electrical machines are related with the bearings. Thus, a reliable bearing condition monitoring scheme able to detect either local or distributed defects are mandatory to avoid a breakdown in the ...
    • Accurate Bearing Faults Classification based on Statistical-Time Features, Curvilinear Component Analysis and Neural Networks 

      Delgado Prieto, Miquel; Cirrincione,, Giansalvo; García Espinosa, Antonio; Ortega Redondo, Juan Antonio; Henao, Humberto (2012)
      Conference report
      Restricted access - publisher's policy
      Bearing faults are the commonest form of malfunction associated with electrical machines. So far, the research has been carried out mainly in the detection of localized faults, but the diagnosis of distributed faults ...
    • An educational tool to assist the design process of switched reluctance machines 

      Riba Ruiz, Jordi-Roger; Romero, Itamar; García Espinosa, Antonio (2016-07-13)
      Article
      Open Access
      The design of electric machines is a hot topic in the syllabuses of several undergraduate and graduate courses. With the development of hybrid and electrical vehicles, this subject is gaining more popularity, especially ...
    • An introduction to fault diagnosis of permanent magnet synchronous machines in master's degree courses 

      Riba Ruiz, Jordi-Roger; García Espinosa, Antonio; Romeral Martínez, José Luis; Ortega Redondo, Juan Antonio (John Wiley & Sons, 2010-08-16)
      Article
      Restricted access - publisher's policy
      Early fault detection and diagnosis of high-performance electric motors has been an active area of research for the past two decades. This work presents a practical session that facilitates instructing students in this ...
    • AUTOMATITZACIÓ INDUSTRIAL (2n quadrimestre, 1r parcial) 

      García Espinosa, Antonio (Universitat Politècnica de Catalunya, 2011-04-14)
      Exam
      Restricted access to the UPC academic community
    • Bearing fault detection by a novel condition-monitoring scheme based on statistical-time features and neural networks 

      Delgado Prieto, Miquel; Cirrincione, Giansalvo; García Espinosa, Antonio; Ortega Redondo, Juan Antonio; Henao, Humberto (Institute of Electrical and Electronics Engineers (IEEE), 2013-08)
      Article
      Restricted access - publisher's policy
      Bearing degradation is the most common source of faults in electrical machines. In this context, this work presents a novel monitoring scheme applied to diagnose bearing faults. Apart from detecting local defects, i.e., ...
    • Closed-loop controller for eliminating the contact bounce in DC core contactors 

      García Espinosa, Antonio; Riba Ruiz, Jordi-Roger; Cusidó Roura, Jordi; Ortega Redondo, Juan Antonio; Romeral Martínez, José Luis (2010-09)
      Article
      Open Access
      The undesirable phenomenon of the contact bounce causes severe erosion of the contacts and, as a consequence, their electrical life and reliability are greatly reduced. On the other hand, the bounce of the armature can ...
    • Computationally efficient design and optimization approach of PMa-SynRM in frequent operating torque-speed range 

      López Torres, Carlos; García Espinosa, Antonio; Riba Ruiz, Jordi-Roger; Lux, Gerhard; Romeral Martínez, José Luis (2018-04-30)
      Article
      Restricted access - publisher's policy
      This paper proposes a design process of permanent magnet assisted synchronous reluctance motors (PMa-SynRM) intended for vehicular propulsion. This approach takes into account range optimization and a multiphysics evaluation ...
    • Constrained-size torque maximization in SynRM machines by means of genetic algorithms 

      López Torres, Carlos; Sala Cardoso, Enric; García Espinosa, Antonio; Romeral Martínez, José Luis (2015)
      Conference report
      Restricted access - publisher's policy
      Synchronous Reluctance Motors have always been an alternative to more mainstream machines such as the Permanent Magnet Synchronous Motor, but until recently they have not found their right place in industrial applications. ...
    • Cursp práctico de microprocesadores con metodología semipresencial 

      Ortega Redondo, Juan Antonio; Romeral Martínez, José Luis; Thomaschewski, J; García Espinosa, Antonio; Cusidó Roura, Jordi; Mon González, Juan (Universitat Politècnica de Catalunya, 2004)
      Conference report
      Open Access
      El objetivo final de esta experiencia es mejorar la docencia impartida por el Departamento de Ingeniería Electrónica en el Campus de Terrassa de la UPC en el área de microprocesadores. La mejora tiene dos ejes fundamentales, ...
    • Custom integer optimization method for wire bundle dimensioning 

      Rius Rueda, Armand; García Espinosa, Antonio; Díaz Millán, Manuel Alberto (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Conference report
      Open Access
      Automotive wiring harnesses have gained weight and complexity through the last decades due to the increasing number of electrical components, which has raised the interest on its weight optimization. For this purpose, ...
    • Customized PMSM design and optimization methodology for water pumping applications 

      Candelo Zuluaga, Carlos Andres; Riba Ruiz, Jordi-Roger; García Espinosa, Antonio; Tubert Blanch, Pere (2021-06-11)
      Article
      Open Access
      The need to reduce water pumps size to achieve compact designs adapted to multiple working points opens new fields of study. PMSMs are the preferred choice due to outstanding torque-speed range capabilities. This paper ...
    • DC-DC buck converter parameter identification based on a white-box approach 

      Balakrishnan, Hariharan; Moreno Eguilaz, Juan Manuel; Riba Ruiz, Jordi-Roger; Bogarra Rodríguez, Santiago; García Espinosa, Antonio (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Conference lecture
      Open Access
      This paper proposes to use a white-box approach to identify the parameters of an electronic DC-DC buck converter. It discretizes the differential equations governing the dynamic of such system, which are used to identify ...
    • Demagnetization diagnosis in permanent magnet synchronous motors under non-stationary speed conditions 

      Riba Ruiz, Jordi-Roger; García Espinosa, Antonio; Romeral Martínez, José Luis; Cusidó Roura, Jordi (2010-10)
      Article
      Restricted access - publisher's policy
      Permanent magnet synchronous motors (PMSMs) are applied in high performance positioning and variable speed applications because of their enhanced features with respect to other AC motor types. Fault detection and diagnosis ...
    • Desenvolupament de recursos per a la creació i gestio de material docent orientat a l’aprenentatge actiu que faciliti l’adaptació d’assignatures tècniques a l’EEES i la seva aplicació a l’ensenyament de circuits elèctrics 

      Bogarra Rodríguez, Santiago; Font Piera, Antonio; Alabern Morera, Francesc Xavier; Rodríguez Cortés, Pedro; Grau Gotés, Maria Àngela; Pallarés Viña, Miguel Juan; Rocabert Delgado, Joan; Rolán Blanco, Alejandro; García Espinosa, Antonio (Universitat Politècnica de Catalunya. Institut de Ciències de l'Educació, 2010-06-04)
      Conference lecture
      Open Access
      L'autoaprenentatge i l’autoavaluació d’assignatures tècniques requereixen eines de càlcul que no estan disponibles dintre del campus virtual ATENEA, per aquest motiu s’ha incorporat al campus virtual de la UPC el software ...