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Auteur Abdelhafid Chaabi |
Documents disponibles écrits par cet auteur (10)
Affiner la recherche Interroger des sources externesApplication des méthodes numériques pour la détermination des caractéristiques physiques et optiques des structures périodiques à base des matériaux artificiels. / Chouaib Chettah
Titre : Application des méthodes numériques pour la détermination des caractéristiques physiques et optiques des structures périodiques à base des matériaux artificiels. Type de document : texte imprimé Auteurs : Chouaib Chettah, Auteur ; Abdelhafid Chaabi, Directeur de thèse Mention d'édition : 18/07/2021 Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2021 Importance : 138 f. Format : 30 cm. Note générale : 1 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
ElectroniqueTags : Structures périodiques matériaux artificiels cristal photonique FDTD 1D&2D-PCs PWE multicouche unidimensionnelle filtres sélectifs TMM Periodic structures artificial materials photonic crystal multilayer one-dimensional selective filters الهياكل الدورية المعادن الاصطناعية البلوري الفوتوني PWE FDTDمتعدد الطبقات أحادي البعد مرشحات انتقائية Index. décimale : 621 Electronique Résumé :
This work was devoted to the study of the characteristics of periodic structures of artificial materials by the application of numerical methods. Our interest was focused on the study of multilayer structures with one-dimensional photonic crystal by proposing a new design and analysis of these structures. We first recalled the periodic structures based on photonic crystals, their different types, as well as the notions of photonic bands and the basic materials used in these structures. The second chapter approached the FDTD method, we started with the theoretical presentation of the method, then its applications in structures (1D & 2D-PCs). The third chapter, treated the method of plane waves PWE and its application in resonators. We ended with the fourth chapter, where we proposed a new design and analysis of a onedimensional photonic crystal structure (1D-PC), based on the use of artificial materials (dielectricsuperconductors-plasmas) for the design of selective filters, by studying their transmission coefficient and the effects of varying the different parameters (thicknesses, angle of incidence,
magnetic field, temperature) using the TMM method. In the end, we succeeded in making a filter, with a high quality factor, better than the filters of the previous structures; which finds great application utility in the field of optical communication.
Diplôme : Doctorat en sciences En ligne : ../theses/electronique/CHE7795.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=11627 Application des méthodes numériques pour la détermination des caractéristiques physiques et optiques des structures périodiques à base des matériaux artificiels. [texte imprimé] / Chouaib Chettah, Auteur ; Abdelhafid Chaabi, Directeur de thèse . - 18/07/2021 . - جامعة الإخوة منتوري قسنطينة, 2021 . - 138 f. ; 30 cm.
1 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ElectroniqueTags : Structures périodiques matériaux artificiels cristal photonique FDTD 1D&2D-PCs PWE multicouche unidimensionnelle filtres sélectifs TMM Periodic structures artificial materials photonic crystal multilayer one-dimensional selective filters الهياكل الدورية المعادن الاصطناعية البلوري الفوتوني PWE FDTDمتعدد الطبقات أحادي البعد مرشحات انتقائية Index. décimale : 621 Electronique Résumé :
This work was devoted to the study of the characteristics of periodic structures of artificial materials by the application of numerical methods. Our interest was focused on the study of multilayer structures with one-dimensional photonic crystal by proposing a new design and analysis of these structures. We first recalled the periodic structures based on photonic crystals, their different types, as well as the notions of photonic bands and the basic materials used in these structures. The second chapter approached the FDTD method, we started with the theoretical presentation of the method, then its applications in structures (1D & 2D-PCs). The third chapter, treated the method of plane waves PWE and its application in resonators. We ended with the fourth chapter, where we proposed a new design and analysis of a onedimensional photonic crystal structure (1D-PC), based on the use of artificial materials (dielectricsuperconductors-plasmas) for the design of selective filters, by studying their transmission coefficient and the effects of varying the different parameters (thicknesses, angle of incidence,
magnetic field, temperature) using the TMM method. In the end, we succeeded in making a filter, with a high quality factor, better than the filters of the previous structures; which finds great application utility in the field of optical communication.
Diplôme : Doctorat en sciences En ligne : ../theses/electronique/CHE7795.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=11627 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité CHE/7795 CHE/7795 Thèse Bibliothèque principale Thèses Disponible
Titre : Contribution à la commande adaptative optimale d’ordre fractionnaire. Type de document : texte imprimé Auteurs : Bachir Bourouba, Auteur ; Samir Ladaci, Directeur de thèse ; Abdelhafid Chaabi, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2018 Importance : 121 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles Langues : Français (fre) Catégories : Français - Anglais
ElectroniqueTags : Calcul fractionnaire système de commande d'ordre fractionnaire commande adaptative à modèle de référence commande optimale commande par mode glissant commande floue commande adaptative optimisation Fractional calculus Fractional order control system Model reference adaptive control Optimal control Sliding mode control Adaptive control Optimization الحساب الجزئي نظام التحكم الجزئي التحكم التكیفي مع نموذج مرجعي التحكم الأمثل التحكم في وضع الانزلاق التحكم
الغامض التحكم التكیفي التحسینIndex. décimale : 621 Electronique Résumé : This work focuses on the introduction of optimization techniques in fractional adaptive control systems and on optimized approximation of fractional systems with reduced order models for identification and control purpose. Indeed, a new technique of approximation has been proposed in this direction, using the DE (differential evolution) technique while showing its advantage compared to other famous techniques such as those developed by Charef or Oustaloup.
Fractional adaptive control laws with optimized parameters are developed in order to improve the control system behavior: In the case of fractional order linear systems, a model reference PID control based on a new optimization algorithm (Moth-Flame) has been proposed. In the case of fractional order chaotic nonlinear systems, the following approaches are considered: a first control with adaptive sliding mode to improve performance and robustness. Since fuzzy systems are universal approximators, this property is exploited to strengthen the previous control law by an
adaptive fuzzy controller. For an optimal control, the parameters of the sliding controller are calculated by PSO optimization technique. In all the previous cases, the analysis of stability and robustness are justified by the Lyapunov approach. The theoretical results are validated by simulation examples.
Diplôme : Doctorat en sciences En ligne : ../theses/electronique/BOU7191.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=10772 Contribution à la commande adaptative optimale d’ordre fractionnaire. [texte imprimé] / Bachir Bourouba, Auteur ; Samir Ladaci, Directeur de thèse ; Abdelhafid Chaabi, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2018 . - 121 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ElectroniqueTags : Calcul fractionnaire système de commande d'ordre fractionnaire commande adaptative à modèle de référence commande optimale commande par mode glissant commande floue commande adaptative optimisation Fractional calculus Fractional order control system Model reference adaptive control Optimal control Sliding mode control Adaptive control Optimization الحساب الجزئي نظام التحكم الجزئي التحكم التكیفي مع نموذج مرجعي التحكم الأمثل التحكم في وضع الانزلاق التحكم
الغامض التحكم التكیفي التحسینIndex. décimale : 621 Electronique Résumé : This work focuses on the introduction of optimization techniques in fractional adaptive control systems and on optimized approximation of fractional systems with reduced order models for identification and control purpose. Indeed, a new technique of approximation has been proposed in this direction, using the DE (differential evolution) technique while showing its advantage compared to other famous techniques such as those developed by Charef or Oustaloup.
Fractional adaptive control laws with optimized parameters are developed in order to improve the control system behavior: In the case of fractional order linear systems, a model reference PID control based on a new optimization algorithm (Moth-Flame) has been proposed. In the case of fractional order chaotic nonlinear systems, the following approaches are considered: a first control with adaptive sliding mode to improve performance and robustness. Since fuzzy systems are universal approximators, this property is exploited to strengthen the previous control law by an
adaptive fuzzy controller. For an optimal control, the parameters of the sliding controller are calculated by PSO optimization technique. In all the previous cases, the analysis of stability and robustness are justified by the Lyapunov approach. The theoretical results are validated by simulation examples.
Diplôme : Doctorat en sciences En ligne : ../theses/electronique/BOU7191.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=10772 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité BOU/7191 BOU/7191 Thèse Bibliothèque principale Thèses Disponible
Titre : Etude de l’interaction élasto-optique et son application dans la conception de capteurs Type de document : texte imprimé Auteurs : Sawsen Rouabah, Auteur ; Abdelhafid Chaabi, Directeur de thèse ; Didier Rouxel, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2017 Importance : 109 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
ElectroniqueTags : élasto-optique capteurs Microscopie Brillouin nanocomposites
irradiésIndex. décimale : 621 Electronique Résumé : Our research work is titled on elasto-optical interactions on the
matter which, as the name suggests, these are the interaction between
light and sound waves. The technique used in this work is the
Brillouin spectroscopy. This is a very good technique that allows us to
determine the frequency of the sound waves in different materials due
to its high sensitivity for the detection of thermally excited phonons.
Among the common applications in the measurement of acoustic
waves on Microsystems such as the nanocomposites or samples of
small dimensions as the section of optical fiber.Diplôme : Doctorat En ligne : ../theses/electronique/ROU7120.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=10481 Etude de l’interaction élasto-optique et son application dans la conception de capteurs [texte imprimé] / Sawsen Rouabah, Auteur ; Abdelhafid Chaabi, Directeur de thèse ; Didier Rouxel, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2017 . - 109 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ElectroniqueTags : élasto-optique capteurs Microscopie Brillouin nanocomposites
irradiésIndex. décimale : 621 Electronique Résumé : Our research work is titled on elasto-optical interactions on the
matter which, as the name suggests, these are the interaction between
light and sound waves. The technique used in this work is the
Brillouin spectroscopy. This is a very good technique that allows us to
determine the frequency of the sound waves in different materials due
to its high sensitivity for the detection of thermally excited phonons.
Among the common applications in the measurement of acoustic
waves on Microsystems such as the nanocomposites or samples of
small dimensions as the section of optical fiber.Diplôme : Doctorat En ligne : ../theses/electronique/ROU7120.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=10481 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité ROU/7120 ROU/7120 Thèse Bibliothèque principale Thèses Disponible
Titre : Etude des metamateriaux et leurs applications dans les systemes micro-ondes. Type de document : texte imprimé Auteurs : soumia Gamouh, Auteur ; Abdelhafid Chaabi, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2017 Importance : 127 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
ElectroniqueTags : Biocapteurs MICRO-ONDES métamatériaux Index. décimale : 621 Electronique Résumé : Metamaterials are gaining momentum in recent years. The new properties allow to consider the
development of new electronic components for new applications.
The use of these materials offers advantages such as reducing weight and bulk, which is beneficial
for their integration into an electronic system.
In this thesis, we are focused in the simulation of the microwaves metamaterial devices. Various
components (antennas, biosensors) were designed, simulation was made using software HFSS.
This work is structured around two major axes: The first axis deals with the design of me
tamaterials inspired – antennas. The results obtained show a multifrequency comportment as well as
obtaining radiation patterns of different shapes, which allows these structures to be good candidates
for applications in wireless communication systems. The second axis presents metamaterial-based
biosensor. Simplicity and speed of analysis are the main advantages of a biosensorDiplôme : Doctorat en sciences En ligne : ../theses/electronique/GAM7129.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=10473 Etude des metamateriaux et leurs applications dans les systemes micro-ondes. [texte imprimé] / soumia Gamouh, Auteur ; Abdelhafid Chaabi, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2017 . - 127 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ElectroniqueTags : Biocapteurs MICRO-ONDES métamatériaux Index. décimale : 621 Electronique Résumé : Metamaterials are gaining momentum in recent years. The new properties allow to consider the
development of new electronic components for new applications.
The use of these materials offers advantages such as reducing weight and bulk, which is beneficial
for their integration into an electronic system.
In this thesis, we are focused in the simulation of the microwaves metamaterial devices. Various
components (antennas, biosensors) were designed, simulation was made using software HFSS.
This work is structured around two major axes: The first axis deals with the design of me
tamaterials inspired – antennas. The results obtained show a multifrequency comportment as well as
obtaining radiation patterns of different shapes, which allows these structures to be good candidates
for applications in wireless communication systems. The second axis presents metamaterial-based
biosensor. Simplicity and speed of analysis are the main advantages of a biosensorDiplôme : Doctorat en sciences En ligne : ../theses/electronique/GAM7129.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=10473 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité GAM/7129 GAM/7129 Thèse Bibliothèque principale Thèses Disponible
Titre : Etude et modélisation de capteurs piézoélectriques, piézorésistifs et capacitifs. Type de document : texte imprimé Auteurs : Mohamed Souilah, Auteur ; Abdelhafid Chaabi, Directeur de thèse ; José Manuel Quero, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2017 Importance : 150 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
ElectroniqueTags : Capteur de pression capacitif PCB-MEMS BETTS SU-8 simulation Capacitive pressure sensor أجھزة استشعار الضغط بالسعة PCB-MEMSعملیة BETTSالمحاكاة Index. décimale : 621 Electronique Résumé : The work of this thesis focuses on the design, modeling and realization of capacitive
pressure sensors using the combination of two techniques PCB-MEMS.
We started by describing the various manufacturing processes of pressure sensors and
summarizing the state of the art of the various methods of manufacturing the capacitive
pressure sensor. The modeling of the mechanical behavior of square, rectangular and circular
membranes is carried out to study the influence on the variation of capacitance as a function
of the applied pressure (the capacitive response), as well as the sensitivity to the pressure.
We determined the influence of the geometric parameters of the membrane on the
performance of the capacitive pressure sensor. We performed a comparative study between
the simulation results obtained from COMSOL software and the theoretical results. We found
that the simulation results are consistent with those of the theory.
We proposed two structures made of capacitive pressure sensors using PCB-MEMS
technology. The BETTS process is used to fabricate the SU-8 membrane and chemical
etching as well as the lift-off process to realize the two electrodes of the capacitive pressure
sensor. The gap between the two electrodes is defined by the thickness of the copper layer of
the commercial printed circuit. The main advantage of the proposed procedure is the
simplicity and low cost of the manufacturing process. Moreover, the ease of integrating
auxiliary electronic circuits on the same printed circuit and the possibility of modifying the
geometry of the structure for the specific application. Then, two prototypes were
manufactured, simulated and characterized to determine their characteristics. We found that
the sensitivity of the capacitive pressure sensor (first prototype) is 4.25 pF/ bar and the second
prototype has a sensitivity of 20.13 pF/bar. A simple calibration procedure is mentioned to
overcome the inherent deviations of the manufacturing process. We studied the effect of
temperature on the response of the capacitive pressure sensor. Consequently, the results
obtained by the COMSOL simulation are in good agreement with those of the experimental.Diplôme : Doctorat En ligne : ../theses/electronique/SOU7043.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=10557 Etude et modélisation de capteurs piézoélectriques, piézorésistifs et capacitifs. [texte imprimé] / Mohamed Souilah, Auteur ; Abdelhafid Chaabi, Directeur de thèse ; José Manuel Quero, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2017 . - 150 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ElectroniqueTags : Capteur de pression capacitif PCB-MEMS BETTS SU-8 simulation Capacitive pressure sensor أجھزة استشعار الضغط بالسعة PCB-MEMSعملیة BETTSالمحاكاة Index. décimale : 621 Electronique Résumé : The work of this thesis focuses on the design, modeling and realization of capacitive
pressure sensors using the combination of two techniques PCB-MEMS.
We started by describing the various manufacturing processes of pressure sensors and
summarizing the state of the art of the various methods of manufacturing the capacitive
pressure sensor. The modeling of the mechanical behavior of square, rectangular and circular
membranes is carried out to study the influence on the variation of capacitance as a function
of the applied pressure (the capacitive response), as well as the sensitivity to the pressure.
We determined the influence of the geometric parameters of the membrane on the
performance of the capacitive pressure sensor. We performed a comparative study between
the simulation results obtained from COMSOL software and the theoretical results. We found
that the simulation results are consistent with those of the theory.
We proposed two structures made of capacitive pressure sensors using PCB-MEMS
technology. The BETTS process is used to fabricate the SU-8 membrane and chemical
etching as well as the lift-off process to realize the two electrodes of the capacitive pressure
sensor. The gap between the two electrodes is defined by the thickness of the copper layer of
the commercial printed circuit. The main advantage of the proposed procedure is the
simplicity and low cost of the manufacturing process. Moreover, the ease of integrating
auxiliary electronic circuits on the same printed circuit and the possibility of modifying the
geometry of the structure for the specific application. Then, two prototypes were
manufactured, simulated and characterized to determine their characteristics. We found that
the sensitivity of the capacitive pressure sensor (first prototype) is 4.25 pF/ bar and the second
prototype has a sensitivity of 20.13 pF/bar. A simple calibration procedure is mentioned to
overcome the inherent deviations of the manufacturing process. We studied the effect of
temperature on the response of the capacitive pressure sensor. Consequently, the results
obtained by the COMSOL simulation are in good agreement with those of the experimental.Diplôme : Doctorat En ligne : ../theses/electronique/SOU7043.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=10557 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité SOU/7043 SOU/7043 Thèse Bibliothèque principale Thèses Disponible
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