Now showing items 28-47 of 108

    Decentralized control techniques applied to electric power distributed generation in microgrids 

    Vásquez Quintero, Juan Carlos (Date of defense: 2009-12-04)

    Distributed generation of electric energy has become part of the current electric power system. In this context a new scenario is arising in which small energy sources make up a new supply system: The microgrid.<br/><br/>The ...

    Demand modeling for water networks calibration and leak localization 

    Sanz Estapé, Gerard (Date of defense: 2016-03-18)

    The success in the application of any model-based methodology (e.g. design, control, supervision) highly depends on the availability of a well calibrated model. There is no best or unique solution for the calibration problem ...

    Design and Control of an Electric Energy Conditioning System for a PEM Type Fuel Cell 

    Malo Barragán, Shane Leonardo (Date of defense: 2009-12-02)

    Isolated electric energy generation systems are often needed to supply electric loads where the electrical network is not available. This could be caused due to geographic isolation, the necessity of load mobility, demanded ...

    Detección y diagnóstico de fallos múltiples en sistemas dinámicos usando análisis de componentes principales no lineal y residuos estructurados 

    Rincón Charris, Amílcar Alejandro (Date of defense: 2015-04-24)

    In recent years the detection and diagnosis of faults in devices and processes has been a field of research and development that has been addressed from multiple perspectives: control engineering, artificial intelligence ...

    Development of control systems and state observers for efficiency and durability improvement in PEM fuel cell based systems 

    Luna Pacho, Julio Alberto (Date of defense: 2017-02-27)

    Proton exchange membrane (PEM) fuel cells, which use hydrogen as fuel, provide high power densities while operating at lower temperatures, reducing the cost of materials and maintenance. PEM fuel cells are suitable for a ...

    Diagnosis and fault-tolerant control using set-based methods 

    Xu, Feng (Date of defense: 2014-11-27)

    The fault-tolerant capability is an important performance specification for most of technical systems. The examples showing its importance are some catastrophes in civil aviation. According to some official investigations, ...

    Digital repetitive control under varying frequency conditions 

    Ramos Fuentes, Germán Andrés (Date of defense: 2012-09-12)

    The tracking/rejection of periodic signals constitutes a wide field of research in the control theory and applications area and Repetitive Control has proven to be an efficient way to face this topic; however, in some ...

    Diseño de un controlador avanzado basado en redes neuronales para la gestión de la mezcla aire-gasolina en un motor alternativo 

    Nevot Cercós, Javier (Date of defense: 2000-03-17)

    En la presente tesis se desarrolla un sistema de control de la mezcla de aire y gasolina en un motor alternativo de cuatro tiempos, basado en redes neuronales. Para que el catalizador logre un grado de depuración aceptable ...

    Disseny i modelització d'un sistema de gestió multiresolució de sèries temporals 

    Llusà Serra, Aleix (Date of defense: 2015-12-04)

    Nowadays, it is possible to acquire a huge amount of data, mainly due to the fact that it is easy to build monitoring systems together with big sensor networks. However, data has to be managed accordingly, which is not so ...

    Dissipativity and passivity-related properties in nonlinear discrete-time systems 

    Navarro López, Eva Maria (Date of defense: 2002-06-28)

    El propósito de la presente tesis es el estudio de la disipatividad en sistemas no lineales discretos. Dicho trabajo de investigación presenta nuevas contribuciones en la teoría de control no lineal discreto basado en ...

    Distance-based formulations for the position analysis of kinematic chains 

    Rojas, Nicolàs (Date of defense: 2012-06-20)

    This thesis addresses the kinematic analysis of mechanisms, in particular, the position analysis of kinematic chains, or linkages, that is, mechanisms with rigid bodies (links) interconnected by kinematic pairs (joints). ...

    Distributed large scale systems : a multi-agent RL-MPC architecture 

    Javalera Rincón, Valeria (Date of defense: 2016-04-07)

    This thesis describes a methodology to deal with the interaction between MPC controllers in a distributed MPC architecture. This approach combines ideas from Distributed Artificial Intelligence (DAI) and Reinforcement ...

    Efficient approaches for object class detection 

    Villamizar Vergel, Michael Alejandro (Date of defense: 2012-09-18)

    La visión por computador y más específicamente el reconocimiento de objetos han demostrado en los últimos años un impresionante progreso que ha llevado a la aparición de nuevas y útiles tecnologías que facilitan nuestras ...

    El modelo eléctrico de conductancias aplicado al isomorfismo de grafos : el método de la estrella 

    Igelmo Ganzo, Manuel (Date of defense: 2016-01-28)

    The first objective proposed in the research of this thesis was the select and develop a (preferably simple) model for graphs, thus, the results obtained through the model may be extrapolated to the modeled objects: graphs. ...

    Energy efficient control of electrostatically actuated MEMS 

    Fargas Marquès, Andreu (Date of defense: 2016-01-22)

    Plenty of Micro-electro-mechanical Systems (MEMS) devices are actuated using electrostatic forces, and specially, parallel-plate actuators are extensively used, due to the simplicity of their design. Nevertheless, ...

    Enhancing low-level features with mid-level cues 

    Trulls Fortuny, Eduard (Date of defense: 2015-02-20)

    Local features have become an essential tool in visual recognition. Much of the progress in computer vision over the past decade has built on simple, local representations such as SIFT or HOG. SIFT in particular shifted ...

    Estabilización de vídeo en tiempo real : aplicaciones en teleoperación de micro vehículos aéreos de ala rotativa 

    Aguilar Castillo, Wilbert Geovanny (Date of defense: 2015-09-04)

    Micro Aerial Vehicles (MAVs), a subset of Unmanned Aerial Vehicles (UAVs), also known as drones, are becoming popular for several applications and gaining interest due to advantages as manufacturing and maintenance cost, ...

    Estimación de la forma de un objeto deformable mediante integración de visión y tacto 

    Castillo Pérez, Esteban del (Date of defense: 2013-09-30)

    Desde hace varias décadas los robots industriales han demostrado su eficiencia para tareas desarrolladas en entornos perfectamente conocidos. No obstante, surgen importantes complicaciones operativas en entornos limitadamente ...

    Estimating and understanding motion : from diagnostic to robotic surgery 

    Avilés Rivero, Angélica Ivone (Date of defense: 2017-05-18)

    Estimating and understanding motion from an image sequence is a central topic in computer vision. The high interest in this topic is because we are living in a world where many events that occur in the environment are ...

    Estrategias de control para sistemas bilineales aplicadas a los convertidores de potencia DD-DC 

    García Esteban, Mauricio (Date of defense: 2001-03-16)

    En este trabajo se presenta, por medio del procedimiento sistemático de selección, definición y adecuación de estrategias generales del control no--lineal, seis diferentes algoritmos propuestos que permiten efectuar el ...