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Listar por palabra clave "Time-frequency transforms"

Mostrando ítems 1-7 de 7

Detection of Field Winding Faults in Synchronous Motors via Analysis of Transient Stray Fluxes and Currents

Tian, P.; Antonino Daviu, José Alfonso; Platero, C.A.; Dunai, Larisa (Institute of Electrical and Electronics Engineers, 2021-09)

[EN] The detection of rotor failures in synchronous motors is a matter of primordial interest in many industrial sites where these machines are critical assets. However, due to the particular operation of these motors, ...
Detection of Winding Asymmetries in Wound-Rotor Induction Motors via Transient Analysis of the External Magnetic Field

Zamudio-Ramírez, Israel; Antonino Daviu, José Alfonso; Osornio-Rios, Roque A.; Romero-Troncoso, Rene de Jesus; Razik, Hubert (Institute of Electrical and Electronics Engineers, 2020-06)

[EN] Over recent decades, the detection of faults in induction motors (IMs) has been mainly focused in cage motors due to their extensive use. However, in recent years, wound-rotor motors have received special attention ...
Estudio sobre transformadas tiempo-frecuencia aplicables al análisis de electrocardiogramas. Desarrollo de una aplicación con Guide de Matlab para la obtención de señales de electrocardiogramas en formato PDF

Giménez Solano, Vicente Miguel (Universitat Politècnica de València, 2014-11-25)

[EN] In this paper we analyze a particular type of biomedical signals: the electrocardiogram (ECG). To analyze these signals, a very powerful digital processing technique are time-frequency transforms. With them, ECG leads ...
Phase information of time-frequency transforms as a key feature for classification of atrial fibrillation episodes

Ortigosa, Nuria; Fernandez Rosell, Carmen; Galbis Verdu, Antonio; Cano-Pérez, Óscar (IOP Publishing, 2015-03)

[EN] Patients suffering from atrial fibrillation can be classified into different subtypes, according to the temporal pattern of the arrhythmia and its recurrence. Nowadays, clinicians cannot differentiate a priori between ...
Smart Sensor for Fault Detection in Induction Motors Based on the Combined Analysis of Stray-Flux and Current Signals: A Flexible, Robust Approach

Zamudio-Ramírez, Israel; Osornio-Rios, Roque Alfredo; Antonino-Daviu, Jose Alfonso (Institute of Electrical and Electronics Engineers, 2022-04)

[EN] The most recent trend in the electric motor condition monitoring area relies on combining the information obtained from different machine quantities in order to reach a more reliable conclusion about the motor¿s health. ...
Smart-Sensors to Estimate Insulation Health in Induction Motors via Analysis of Stray Flux

Zamudio-Ramírez, Israel; Osornio-Rios, Roque Alfredo; Trejo-Hernandez, Miguel; Romero-Troncoso, Rene de Jesus; Antonino-Daviu, J. (MDPI AG, 2019-05-01)

[EN] Induction motors (IMs) are essential components in industrial applications. These motors have to perform numerous tasks under a wide variety of conditions, which affects performance and reliability and gradually brings ...
Time-frequency vibration analysis for the detection of motor damages caused by bearing currents

Prudhom, Aurelien; Antonino-Daviu, J.; Razik, Hubert; Climente Alarcón, Vicente (Elsevier, 2017)

[EN] Motor failure due to bearing currents is an issue that has drawn an increasing industrial interest over recent years. Bearing currents usually appear in motors operated by variable frequency drives (VFD); these drives ...