Universitat Politècnica de Catalunya
Ara mostrant els elements 110-129 de 209
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, ...
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 ...
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 ...
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. ...
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 ...
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 ...
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 ...
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 ...
(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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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. ...
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. ...
