Programa de Doctorat en Enginyeria Electrònica: Envíos recientes
Mostrando ítems 81-100 de 208
Dielectric charge control in contactless capacitive MEMS
Micro-Electro-Mechanical Systems, or MEMS, has been a continuously growing technology during the last decades. Since 1959, when the theoretical physicist Richard Feynman introduced the concept of nanotechnology in his ...
Fault detection and identification methodology under an incremental learning framework applied to industrial electromechanical systems
Condition Based Maintenance is a program that recommends actions based on the information collected and interpreted through condition monitoring and has become accepted since a decade ago by the industry as a key factor ...
Transmissió de potencials d'acció basada en la propagació de camps elèctrics intra-membrana
Current theories and mechanisms of nerve impulse propagation inside neurons do not give a satisfactory explanation to the nanoscale processes that occur inside the membrane. Propagation at the dendritic zones, and at the ...
Mixed-signal alternate test and binning using digitally encoded signatures
Integrated circuit industry has always faced the necessity of testing and verifying the fabricated ICs in order to guarantee that no faulty circuits reach the market as well as the fabricated devices function within design ...
Adaptive load consumption modelling on the user side: contributions to load forecasting modelling based on supervised mixture of experts and genetic programming
This research work proposes three main contributions on the load forecasting field: the enhancement of the forecasting accuracy, the enhancement of the model adaptiveness, and the automatization on the execution of the ...
Contributions to the modulation and closed-loop control of multilevel dual-active-bridge Dc-Dc converters
Galvanically-isolated bidirectional dc-dc converters (IBDCs) have recently received more attention due to its increasing use in systems requiring energy transfer between two dc networks in both directions, requiring galvanic ...
Wireless power transfer : fueling the dots
Resonant Inductive Coupling Wireless Power Transfer (RIC-WPT) has been proven to provide very high power transfer efficiencies (above 80%) for moderate distances, and is hence foreseen as a key technology to enable wireless ...
Array sísmico inalámbrico y de parámetros ambientales para la caracterización de precursores de actividad volcánica
The global seismic activity is extensively studied and well characterized by seismic networks focused on the seismic hazards derived from earthquakes. However, a specific study on volcano seismicity is not widespread, due ...
A contribution to unobtrusive measurement methods for sleep monitoring based on magnetic induction technique
Sleep monitoring is of major importance for various medical areas such as the detection and treatment of sleep disorders, assessment of different medical conditions or medications' effects over sleep quality, and mortality ...
Contributions to the design and operation of a multilevel-active-clamped Dc-Ac grid- connected power converter for wind energy conversion systems
The demand of wind energy has considerably increased during the last decades. In order to fulfil this great energy demand, wind energy conversion systems (WECS) are designed to manage higher power ratings. Currently, the ...
Ultra-low power circuits based on tunnel FETs for energy harvesting applications
There has been a tremendous evolution in integrated circuit technology in the past decades. With the scaling of complementary metal-oxide-semiconductor (CMOS) transistors, faster, less power consuming and more complex chips ...
Control and modulation of modular multilevel converters
The integration of renewable energy sources in the electrical grid is reducing our dependence on fossil fuels. However, to ensure feasibility and reliability of distributed energy generation, more efficient and higher power ...
Interdigitated back-contacted(IBC) c-Si solar cells based on laser processed dielectric layers
The goal of this thesis is the fabrication of high-efficiency interdigitated back-contact (IBC) c-Si solar cell at low temperature and low-cost manufacturing technology. This thesis proposes a new concept and at the same ...
Control de convertidores trifásicos mediante imposición de dinámica y estimadores
The present thesis is focused on the control of three-phase power converters using sliding-mode control (SMC) in abc frame. This work has been based on previous publications about the SMC applied to three-phase power ...
Monitorización ambulatoria de fluctuaciones y síntomas motores mediante acelerómetros : contribución a la diagnosis y seguimiento de la enfermedad de Parkinson
Parkinson's Disease (PD) is a neurodegenerative disorder that currently does not have any known cure. Although there are treatments that enable patients to have a good quality of life over many years, adverse effects, from ...
Estudio de la eficiencia energética en convertidores CC/CA utilizando multiplexado de interruptores y técnicas de control adaptativas
Electrical energy generation systems based on renewable energy sources have been promoted in recent years. The introduction of these systems has changed the centralized energy model to become a distributed energy model. ...
Time synchronization in underwater acoustic sensor networks
This thesis deals with the development of a time synchronization algorithm for underwater sensor networks. The ease of deployment and maintenance of wireless networks leaded this research to the use of an acoustic communication ...
Metodología de diseño lógico redundante para escenarios con ruido extremadamente alto y bajo voltaje de alimentación
In future scenarios of low power and low voltage the electronic systems will present a high error ratio or voltage fluctuations due to dramatically signal to noise ratio. These transient errors can affect the logical results ...
New processing approaches for Cu2ZnSnSe4-based solar cells
The present thesis focuses on the promising semiconductor material kesterite, Cu2ZnSn(S,Se)4, known as CZTS(e), which is used in the second generation of solar cells, generally known as thin film photovoltaics (PV). This ...
Enabling the internet of things through energy harvesting : a circuit-aware system synthesis-oriented analysis approach
Powering wireless sensors has become a key challenge to enable the Internet of Things vision. A common approach to achieve this is to use Energy Harvesting. By means of this technology, sensors have access to an unlimited ...
