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Listar por palabra clave "Frequency domain"

Mostrando ítems 1-7 de 7

A QFT approach to robust dual-rate control systems

Baños, Alfonso; Salt Llobregat, Julián José; Casanova Calvo, Vicente (John Wiley & Sons, 2022-01-25)

[EN] A dual-rate control system is a hybrid system composed of continuous-time and discrete-time elements with two sampling frequencies. In this work, a new frequency domain analysis and design approach, based on the ...
A time and frequency domain analysis of the effect of vibrating fuel assemblies on the neutron noise

Vidal-Ferràndiz, Antoni; Carreño, Amanda; Ginestar Peiro, Damián; Demazière, C.; Verdú Martín, Gumersindo Jesús (Elsevier, 2020-03)

[EN] The mechanical vibrations of fuel assemblies have been shown to give rise to high levels of neutron noise, triggering in some circumstances the necessity to operate nuclear reactors at a reduced power level. This work ...
Edge-wise perturbations to model vibrating fuel assemblies in the frequency-domain using FEMFFUSION: development and verification

Vidal-Ferràndiz, Antoni; Carreño, Amanda; Ginestar Peiro, Damián; Verdú Martín, Gumersindo Jesús (Elsevier, 2022-09-15)

[EN] The mechanical vibrations of fuel assemblies have shown to give high levels of neutron noise, triggering in some circumstances the necessity to operate nuclear reactors at a reduced power level. This behaviour can be ...
Frequency-domain models in the SPN approximation for neutron noise calculations

Carreño, Amanda; Vidal-Ferràndiz, Antoni; Ginestar Peiro, Damián; Verdú Martín, Gumersindo Jesús (Elsevier, 2022-06)

[EN] Simulations of the neutron flux fluctuations, known as neutron noise, can be performed by means of the spherical harmonics equations (SPN) approximation with higher accuracy than with the diffusion equation. In this ...
Interpolación inversa de características de respuesta transitoria temporal a parámetros de la función de transferencia típica de segundo orden

Joglar Alcubilla, Javier (Universitat Politècnica de València, 2017-01-05)

[ES] A efectos de obtener una metodología de traslado de especificaciones temporales al dominio de la frecuencia, que minimiza el sobrediseño y la iteración manual en el proceso de búsqueda de un controlador en frecuencia, ...
Modelling and simulations of reactor neutron noise induced by mechanical vibrations

Vidal-Ferràndiz, Antoni; Ginestar Peiro, Damián; Carreño, Amanda; Verdú Martín, Gumersindo Jesús; Dokhane, A.; Verma, V.; Perin, Y.; Herb, J.; Mylonakis, A.; Demazière, Christophe; Vinai, P. (Elsevier, 2022-11)

[EN] Mechanical vibrations of core internals are among the main perturbations that induce oscillations in the neutron flux field, also known as neutron noise. In this work, different simulation models for the study of the ...
PARCS vs CORE SIM neutron noise simulations

Olmo-Juan, Nicolás; Demazière, Christophe; Barrachina, T.; Miró Herrero, Rafael; Verdú Martín, Gumersindo Jesús (Elsevier, 2019-08)

[EN] In a nuclear reactor, even operating at full power and steady-state conditions, fluctuations are detected in the recording of any process parameter. These fluctuations (also called noise) could be of various origins, ...