Enhancement of defect diagnosis based on the analysis of CMOS DUT behaviour 

Arumí i Delgado, Daniel (Date of defense: 2008-07-11)

Les dimensions dels transistors disminueixen per a cada nova tecnologia CMOS. Aquest alt nivell d'integració complica el procés de fabricació dels circuits integrats, apareixent nous mecanismes de fallada. En aquest sentit, ...

Estimació de velocitat per al control vectorial de motors d'inducció 

Català López, Jordi (Date of defense: 2003-03-14)

Gràcies als avenços de l'electrònica de potència, la microelectrònica i la teoria de control s'ha generalitzat l'ús dels controls vectorials del motor d'inducció en aplicacions industrials. Les prestacions d'aquests controls ...

Estimación y medida de campos electromagnéticos radiados por sistemas de cableado diferenciales. 

Silva Martínez, Ferran (Date of defense: 1997-06-02)

Estrategias de control para sistemas de generación distribuida durante huecos de tensión 

Camacho Santiago, Antonio (Date of defense: 2015-07-17)

The objective of this thesis is the development of control strategies for distributed generation systems during voltage sags. The proposed control strategies present different options to improve the behavior of inverters ...

Estudio de la eficiencia energética en convertidores CC/CA utilizando multiplexado de interruptores y técnicas de control adaptativas 

Pérez Delgado, Raúl (Date of defense: 2016-09-09)

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. ...

Estudio de la variabilidad del ritmo cardíaco mediante técnicas estadísticas, espectrales y no lineales 

García González, Miguel Ángel (Date of defense: 1998-10-23)

El análisis de la variabilidad del ritmo cardíaco es una técnica no invasiva que permite la diagnosis y prognosis de cardiopatías y neuropatías. El ritmo cardíaco está modulado por diversos sistemas fisiológicos siendo el ...

Estudio de la viabilidad de la estimación del grado de adherencia a estilos de vida saludables a partir de medidas cardíacas oportunistas 

Ferrer Mileo, Víctor (Date of defense: 2019-10-11)

In recent times, developed countries have experienced an increase of several diseases related to non-healthy lifestyles. Nevertheless, as an individual, it is difficult to know the degree of adherence to a healthy lifestyle ...

Estudio e implementación de nuevas técnicas de modulación para la reducción de perturbaciones EMI en convertidores matriciales 

Espina Masramon, Jordi (Date of defense: 2012-11-07)

El procesamiento de la energía mediante convertidores electrónicos conmutados ha tomado una relevancia notable durante la última década, y presumiblemente será uno de los campos de la ingeniería con mayor proyección ...

Evaluación no destructiva de estructuras de obra civil mediante métodos electromagnéticos 

Juan Garcia, Pablo (Date of defense: 2011-04-08)

Los métodos de evaluación no destructiva en el campo de la ingeniería civil suponen una alternativa a los métodos de control tradicionales. Disponer de técnicas que permitan obtener información relevante acerca de las ...

Exploration of FDSOI back-biasing techniques to hinder cryptographic attacks based on leakage current 

Palma Carmona, Kenneth (Date of defense: 2023-10-18)

(English) Cryptography is the science that studies how to achieve secure communication between multiple parties. Under the assumption that any message transmitted is to be ultimately intercepted, the endeavors of cryptography ...

Fabrication, characterisation and modelling of nanocrystalline silicon thin-film transistors obtained by hot-wire chemical vapour deposition. 

Dosev, Dosi Konstantinov (Date of defense: 2003-03-31)

Hot-wire chemical vapour deposition (HWCVD) is a promising technique that permits polycrystalline silicon films with grain size of nanometers to be obtained at high deposition rates and low substrate temperatures. This ...

Failure distance based bounds of dependability measures 

Suñé Socias, Víctor Manuel (Date of defense: 2000-07-03)

El tema d'aquesta tesi és el desenvolupament de mètodes de fitació per a una classe de models de confiabilitat basats en cadenes de Markov de temps continu (CMTC) de sistemes tolerants a fallades.<br/><br/>Els sistemes ...

Fault detection and identification methodology under an incremental learning framework applied to industrial electromechanical systems 

Cariño Corrales, Jesús Adolfo (Date of defense: 2017-09-08)

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 ...

Fault diagnosis and fault tolerant control of multiphase voltage source converters for application in traction drives 

Salehifar, Mehdi (Date of defense: 2014-07-15)

There is an increasing demand for vehicles with less environmental impact and higher fuel efficiency. To meet these requirements, the transportation electrification has been introduced in both academia and industry during ...

Fault tolerant vector control of five-phase permanent magnet motors 

Salehi Arashloo, Ramin (Date of defense: 2014-07-15)

Equipped with appropriate control strategies, permanent magnet (PM) machines are becoming one of the most flexible types of actuators for many industrial applications. Among different types of PM machines, five-phase BLDC ...

Fixed-switching frequency sliding mode control applied to power converters 

Repecho del Corral, Víctor (Date of defense: 2018-02-21)

The application of the sliding mode control in power converters has a well-known inconvenient from the practical point of view, which is to obtain fixed switching frequency implementations. This thesis deals with the ...

Full time-domain electromagnetic interference measurements and applications 

Azpúrua, Marco A. (Date of defense: 2018-06-28)

This thesis presents a technology that has been called the Full Time-Domain Electromagnetic Interference measurement systems and its applications. Full TDEMI measurement systems are an implementation of an FFT-based receiver ...

Generación de falsas claves criptográficas como medida de protección frente a ataques por canal lateral 

Lumbiarres López, Rubén (Date of defense: 2015-07-29)

In the late 90s, Paul C. Kocher introduced the concept of differential attack focused on the power consumption of a cryptographic device. In this type of analysis the plain text sent to the device is known, and all possible ...

High efficiency sensorless fault tolerant control of permanent magnet assisted synchronous reluctance motor 

Michalski, Tomasz Dobromir (Date of defense: 2021-10-18)

In the last decades, the development trends of high efficiency and compact electric drives on the motor side focused on Permanent Magnet Synchronous Machines (PMSMs) equipped with magnets based on the rare-earth elements. ...

High performance readout circuits and devices for Lorentz force resonant CMOS-MEMS magnetic sensors 

Sánchez Chiva, Josep Maria (Date of defense: 2020-03-05)

In the last decades, sensing capabilities of martphones have greatly improved since the early mobile phones of the 90’s. Moreover, wearables and the automotive industry require increasing electronics and sensing sophistication. ...