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Listar por palabra clave "Discrete Fourier transforms"

Mostrando ítems 1-6 de 6

Adaptive determination of cut-off frequencies for filtering the in-cylinder pressure in diesel engines combustion analysis

Payri González, Francisco; Olmeda González, Pablo Cesar; Guardiola García, Carlos; Martín Díaz, Jaime (Elsevier, 2011-10)

[EN] In-cylinder pressure analysis is a key tool for engine research and diagnosis and it has been object of study from the beginning of the internal combustion engines. One of its most useful application is combustion ...
Application of the parametric proper generalized decomposition to the frequency-dependent calculation of the impedance of an AC line with rectangular conductors

Sancarlos-González, A.; Pineda-Sanchez, Manuel; Puche-Panadero, Rubén; Sapena-Bano, Angel; Riera-Guasp, Martín; Martinez-Roman, Javier; Pérez-Cruz, Juan; Roger-Folch, José (De Gruyter Open, 2017)

[EN] AC lines of industrial busbar systems are usually built using conductors with rectangular cross sections, where each phase can have several parallel conductors to carry high currents. The current density in a rectangular ...
Induction machine model with space harmonics for fault diagnosis based on the convolution theorem

Sapena-Bano, Angel; Martinez-Roman, Javier; Puche-Panadero, Rubén; Pineda-Sanchez, Manuel; Pérez-Cruz, Juan; Riera-Guasp, Martín (Elsevier, 2018)

[EN] Fault diagnosis of induction machines (IMs) requires a fast model of the machine, for adjusting fault thresholds in data-driven diagnostic methods, for computing the residuals in model-driven diagnostic systems, or ...
Induction machine model with space harmonics for the diagnosis of rotor eccentricity, based on the convolution theorem

Sapena-Bano, Angel; Martinez-Roman, Javier; Puche-Panadero, Rubén; Pineda Sánchez, Manuel; Pérez-Cruz, Juan; Riera-Guasp, Martín (Elsevier, 2020-05)

[EN] Condition based maintenance (CBM) systems of induction machines (IMs) require fast and accurate models that can reproduce the fault related harmonics generated by different kinds of faults. Such models are needed to ...
Refractive index calculation from echo interference in pulsed terahertz spectroscopy

Sanjuan, Federico; Vidal Rodriguez, Borja (Institution of Engineering and Technology (IET), 2014-02-13)

A method for calculating the average refractive index of a sample using transmission terahertz time-domain spectroscopy in a single measurement is presented. The refractive index is derived from the analysis of the ...
Transmit Diversity Scheme for OFDM Systems Using the Odd DFT

Almenar Terré, Vicenç; Girona, Amparo; Flores Asenjo, Santiago J.; Marín-Roig Ramón, José (Institute of Electronics, Information and Communication Engineers, 2011)

[EN] A new transmission scheme for OFDM systems that uses the odd discrete Fourier transform to provide frequency diversity gain is proposed. Odd DFT allows the transmission of data subcarriers in frequencies that are ...