Documents disponibles écrits par cet auteur

Piezoelectric actuator design and placement for switched reluctance motors active damping / Ojeda, X. in IEEE transactions on energy conversion, Vol. 24 N° 2 (Juin 2009) 

Public ISBD [article]  in IEEE transactions on energy conversion > Vol. 24 N° 2 (Juin 2009) . - pp. 305 - 313 Titre : Piezoelectric actuator design and placement for switched reluctance motors active damping Type de document : texte imprimé Auteurs : Ojeda, X., Auteur ; Mininger, X., Auteur ; Hamid Ben Ahmed, Auteur Année de publication : 2009 Article en page(s) : pp. 305 - 313 Note générale : energy conversion Langues : Anglais (eng) Mots-clés : Active  filters;  damping;  finite  element  analysis;  genetic  algorithms;  minimisation;  piezoelectric  actuators;  reluctance  motors;  stators;  vibrations Résumé : This paper describes the design and the placement of piezoelectric actuators on switched reluctance motors by means of a genetic algorithm (nondominated sorting genetic algorithm II) for the purpose of reducing stator vibrations. Two distinct approaches are presented: one energy-related and the other based on a minimization of the resultant displacement. These methods lead to design and placement strategy for the piezoelectric actuators. A number of optimal actuators obtained using these kinds of approaches is also compared with mechanical finite-element simulations. At last, a solution is achieved in order to validate optimal placement using positive position feedback active filtering. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4957564&sortType%3Das [...] [article] Piezoelectric actuator design and placement for switched reluctance motors active damping [texte imprimé] / Ojeda, X., Auteur ; Mininger, X., Auteur ; Hamid Ben Ahmed, Auteur . - 2009 . - pp. 305 - 313. energy conversion Langues : Anglais (eng) in IEEE transactions on energy conversion > Vol. 24 N° 2 (Juin 2009) . - pp. 305 - 313 Mots-clés : Active  filters;  damping;  finite  element  analysis;  genetic  algorithms;  minimisation;  piezoelectric  actuators;  reluctance  motors;  stators;  vibrations Résumé : This paper describes the design and the placement of piezoelectric actuators on switched reluctance motors by means of a genetic algorithm (nondominated sorting genetic algorithm II) for the purpose of reducing stator vibrations. Two distinct approaches are presented: one energy-related and the other based on a minimization of the resultant displacement. These methods lead to design and placement strategy for the piezoelectric actuators. A number of optimal actuators obtained using these kinds of approaches is also compared with mechanical finite-element simulations. At last, a solution is achieved in order to validate optimal placement using positive position feedback active filtering. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4957564&sortType%3Das [...]

Semiactive and active piezoelectric vibration controls for switched reluctance machine / Mininger, X. in IEEE transactions on energy conversion, Vol. 23 N°1 (Mars 2008) 

Public ISBD [article]  in IEEE transactions on energy conversion > Vol. 23 N°1 (Mars 2008) . - pp. 78 - 85 Titre : Semiactive and active piezoelectric vibration controls for switched reluctance machine Type de document : texte imprimé Auteurs : Mininger, X., Auteur ; Lefeuvre, E., Auteur ; Gabsi, M., Auteur Année de publication : 2008 Article en page(s) : pp. 78 - 85 Note générale : Energy conversion Langues : Anglais (eng) Mots-clés : Damping;  machine  control;  noise  abatement;  piezoelectric  devices;  reluctance  machines;  vibration  control Résumé : This paper presents two vibration control approaches using piezoelectric inserts applied to a switched reluctance machine (SRM) in order to reduce acoustic emission. The semiactive approach, called synchronized switch damping, consists of a particular voltage processing that increases the electromechanical energy conversion of the piezoelectric insert and leads to effective vibration energy dissipation. Piezoelectric inserts can also be considered as actuators: the active technique aims at imposing an adequate force in order to compensate the structure strain originated by the electromagnetic forces. These two techniques are compared on a single-phase structure mechanically similar to that of an SRM. Advantages and drawbacks depending on the chosen technique are then discussed. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4453990&sortType%3Das [...] [article] Semiactive and active piezoelectric vibration controls for switched reluctance machine [texte imprimé] / Mininger, X., Auteur ; Lefeuvre, E., Auteur ; Gabsi, M., Auteur . - 2008 . - pp. 78 - 85. Energy conversion Langues : Anglais (eng) in IEEE transactions on energy conversion > Vol. 23 N°1 (Mars 2008) . - pp. 78 - 85 Mots-clés : Damping;  machine  control;  noise  abatement;  piezoelectric  devices;  reluctance  machines;  vibration  control Résumé : This paper presents two vibration control approaches using piezoelectric inserts applied to a switched reluctance machine (SRM) in order to reduce acoustic emission. The semiactive approach, called synchronized switch damping, consists of a particular voltage processing that increases the electromechanical energy conversion of the piezoelectric insert and leads to effective vibration energy dissipation. Piezoelectric inserts can also be considered as actuators: the active technique aims at imposing an adequate force in order to compensate the structure strain originated by the electromagnetic forces. These two techniques are compared on a single-phase structure mechanically similar to that of an SRM. Advantages and drawbacks depending on the chosen technique are then discussed. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4453990&sortType%3Das [...]