Janah SAADI | Ensem - Academia.edu (original) (raw)
Papers by Janah SAADI
Ognyan Andreev, Methods, used in the management of the investment projects, financed by the Cohes... more Ognyan Andreev, Methods, used in the management of the investment projects, financed by the Cohesion fund of European Union Огнян Андреев, Методи, използвани при управление на инвестиционни проекти, финансирани от Кохезионния фонд на ЕС 5 Ognyan Andreev, Kiril Anguelov, Indicators for determining project capacity of the enterprise beneficiary under Operational Programme "Development of the competitiveness of the Bulgarian economy 2007-2013" Огнян Андреев, Кирил Ангелов, Показатели за определяне на проектния капацитет на предприятие бенефициент по Оперативна програма "Развитие на конкурентоспособността на българската икономика 2007-2013" Ivaylo Stoyanov, Stressors and Indicators for Measuring Professional Stress in Organizations Ivaylo Stoyanov, Philosophies for Managing Organizational Change-Comparative Analysis Desislava Aleksieva, Limits and Guarantees of the Power in Public Administration of Republic of Bulgaria Scientific study Zlatina Karadjova, Franchise-perspective issue for tourist business' developping Златина Караджова, Франчайзингът-перспективно направление за развитие на туристически бизнес
La problématique traitée dans ce travail, porte sur l’équilibrage des niveaux de stocks entre les... more La problématique traitée dans ce travail, porte sur l’équilibrage des niveaux de stocks entre les centres de transfusion sanguine. Il consiste à optimiser le déplacement des quantités de produits sanguins entre les différents centres afin de rétablir les quantités idéals à moindre coût. Un tel problème est caractérisé par un nombre de contraintes à prendre en compte : stock de sécurité, stock idéal, équilibrage proportionnelle des stocks, etc. Un modèle linéaire en variables entières a été proposé pour déterminer l’affectation optimale entre différents centres. Les performances des méthodes développées ont été évaluées par les résultats expérimentaux qui sont obtenus à partir d'un solveur commercial
IFIP Advances in Information and Communication Technology, 2014
HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific re... more HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.
IOSR Journal of Electronics and Communication Engineering, 2014
This paper deals with the design of a nonlinear controller for single-phase grid-connected photov... more This paper deals with the design of a nonlinear controller for single-phase grid-connected photovoltaic (PV) renewable energy systems to maintain the current injected into the grid in phase with grid voltage and to regulate the DC link voltage and to extract maximum power point tracking (MPPT).The system configurationincludes a photovoltaic generator, DC-DCconverter, DC-AC inverter coupled to grid network. The controller is designed using thebackstepping control to optimize the PV energy extraction and to achieve unity power factor, the controller is based on an averaged nonlinear state space model of the controlled system. This is carried out via controlling the duty ratio of the DC-DC converter and DC-AC inverter. An integral action was added in order to robustify the controller with respect to parameter variations and disturbances.The synthesis of the regulator wasachieved by having recourse to advanced tools of nonlinearcontrol such as asymptotic stability in the sense of Lyapunov. The performance of the proposed controller is evaluated through numerical simulation in terms of delivering maximum power and synchronization of grid current with grid voltage under changes in atmospheric conditions.
In this paper, we present the recently implemented approach allowing dynamics systems to plan its... more In this paper, we present the recently implemented approach allowing dynamics systems to plan its actions, taking into account the environment perception changes, and to control their execution when uncertainty and incomplete knowledge are the major characteristics of the situated environment [1][2][3][4]. The control distributed architecture has three modules and the approach is related to hierarchical planning: the plan produced by the planner is further refined at the control layer that in turn supervises its execution by a functional level. We propose a new intelligent distributed architecture constituted by: Multi-Agent subsystem of the sensor, of the interpretation and representation of environment, of the dynamic localization and of the action. We tested this distributed architectue with dynamic system in the known environment.The autonomous vehicle task is described by an AND/OR graph in a propositional logic and decomposed in primitive actions. The distributed controlbased ...
Complex Systems Design & Management, Nov 20, 2018
The digital transformation of the Mining Industry is about to affect all organizational levels, f... more The digital transformation of the Mining Industry is about to affect all organizational levels, from manufacturing to maintenance. This revolution would be impossible without a modern Information and Communication Technologies (ICT) infrastructure. Maintenance management is a complex process requiring an effective combination of technical and economic expertise. This paper presents electromechanical systems condition-monitoring architecture, using the Systems Engineering Approach. The main function of the system is to extract and to identify physical parameters of the studied system for predictive maintenance strategy elaboration. The System's architecture based on the operational, functional and constructional visions is fundamental to define the action scope and its features, leading to avoid production breakdowns, to improve maintenance management and to minimize the related intervention costs. We used SysML diagrams to model the solution and hence to materialize the System targeting maintenance in industrial environment.
The Component Hybrid Dynamic Nets CHDN is a graphic model for hybrid dynamic systems. The CHDN al... more The Component Hybrid Dynamic Nets CHDN is a graphic model for hybrid dynamic systems. The CHDN allows an individual representation of every component in the hybrid system. On the base of this methodology a software tool dedicated to the electrical engineering simulation has been developed. So, the aim of this paper is to present a brief review of model’s structure and to describe the developed software which has been called SimRDH. In order to show the abilities of our tool, a motorisation device, including the use of the Fuel Cell and Supercapacitors hase been studied. The obtained results are encouraging especially in the development of simulator of E.V. areas.
Les logiciels de pilotage de production MES assurent les fonctions de contrôle d’exécution et per... more Les logiciels de pilotage de production MES assurent les fonctions de contrôle d’exécution et permettent de relier le système de gestion et le système de conduite et de supervision des différents machines. Parmi les fonctions assurées par un MES, il y a la fonction Analyse des Performances. Cependant, les entreprises ont besoin de méthodes pour bien spécifier leur système d’indicateurs de performance et pour les aider pour le déploiement. Dans cet article, nous proposons une méthodologie de modélisation et déploiement d’un Système d’Indicateurs de Performance en vue d’un pilotage d’un système de production. Nous allons nous baser sur les travaux sur la norme S95 qui ont été menés par l’ISA pour offrir un cadre pour la spécification des fonctions du système MES. Nous utiliserons le langage SysML pour la modélisation. Nous validons notre modèle par son application au pilotage d’une cellule flexible d’usinage.
The Journal of Quality in Education, 2017
La três forte contrainte de la mondialisation de l'économie génêre des besoins croissants en ... more La três forte contrainte de la mondialisation de l'économie génêre des besoins croissants en compétences, avec pour corollaire une révision des programmes de formation dans les systêmes éducatifs nationaux. A cela s'ajoutent, dans le contexte marocain, de nouveaux défis tels l'objectif de 10.000 ingénieurs par an à l'horizon 2010. Dans ce travail, nous traitons le cas de la formation de l'ingénieur électricien au sein de l'Ecole Supérieure d'Electricité et de Mécanique de Casablanca (ENSEM). Notre objectif est d'initier une démarche d'amélioration de la qualité de la formation dans cet établissement basée sur les besoins des entreprises considérées comme les clients de l'ENSEM, fournisseur de compétences sur le marché de l'emploi. Notre démarche a débuté par le recueil des besoins à travers une enquête auprês d'un échantillon d'entreprises du secteur d'activité concerné. A cette fin, nous avons segmenté le marché cible. Au p...
universities and high schools A major lever for a competitive Moroccan company
2016 International Conference on Electrical Sciences and Technologies in Maghreb (CISTEM), 2016
In this paper, We will be interested to the direct torque control (DTC) of an induction motor ass... more In this paper, We will be interested to the direct torque control (DTC) of an induction motor associated to the inverter (Inv-IM). This technique presents several advantages compared to other techniques such as vector control and field control. DTC permits to control directly the stator flux and the electromagnetic torque by selecting the appropriate vector voltage to be applied to the induction motor. In this work, I start by modeling the DTC of Inv-IM as a hybrid system (HS). Then, we abstract the continuous dynamics of the HS. We obtain a discrete event model of the HS. And finally, we use Supervisory Control Theory of DES to drive Inv-IM to a desired working point.
Ognyan Andreev, Methods, used in the management of the investment projects, financed by the Cohes... more Ognyan Andreev, Methods, used in the management of the investment projects, financed by the Cohesion fund of European Union Огнян Андреев, Методи, използвани при управление на инвестиционни проекти, финансирани от Кохезионния фонд на ЕС 5 Ognyan Andreev, Kiril Anguelov, Indicators for determining project capacity of the enterprise beneficiary under Operational Programme "Development of the competitiveness of the Bulgarian economy 2007-2013" Огнян Андреев, Кирил Ангелов, Показатели за определяне на проектния капацитет на предприятие бенефициент по Оперативна програма "Развитие на конкурентоспособността на българската икономика 2007-2013" Ivaylo Stoyanov, Stressors and Indicators for Measuring Professional Stress in Organizations Ivaylo Stoyanov, Philosophies for Managing Organizational Change-Comparative Analysis Desislava Aleksieva, Limits and Guarantees of the Power in Public Administration of Republic of Bulgaria Scientific study Zlatina Karadjova, Franchise-perspective issue for tourist business' developping Златина Караджова, Франчайзингът-перспективно направление за развитие на туристически бизнес
La problématique traitée dans ce travail, porte sur l’équilibrage des niveaux de stocks entre les... more La problématique traitée dans ce travail, porte sur l’équilibrage des niveaux de stocks entre les centres de transfusion sanguine. Il consiste à optimiser le déplacement des quantités de produits sanguins entre les différents centres afin de rétablir les quantités idéals à moindre coût. Un tel problème est caractérisé par un nombre de contraintes à prendre en compte : stock de sécurité, stock idéal, équilibrage proportionnelle des stocks, etc. Un modèle linéaire en variables entières a été proposé pour déterminer l’affectation optimale entre différents centres. Les performances des méthodes développées ont été évaluées par les résultats expérimentaux qui sont obtenus à partir d'un solveur commercial
IFIP Advances in Information and Communication Technology, 2014
HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific re... more HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.
IOSR Journal of Electronics and Communication Engineering, 2014
This paper deals with the design of a nonlinear controller for single-phase grid-connected photov... more This paper deals with the design of a nonlinear controller for single-phase grid-connected photovoltaic (PV) renewable energy systems to maintain the current injected into the grid in phase with grid voltage and to regulate the DC link voltage and to extract maximum power point tracking (MPPT).The system configurationincludes a photovoltaic generator, DC-DCconverter, DC-AC inverter coupled to grid network. The controller is designed using thebackstepping control to optimize the PV energy extraction and to achieve unity power factor, the controller is based on an averaged nonlinear state space model of the controlled system. This is carried out via controlling the duty ratio of the DC-DC converter and DC-AC inverter. An integral action was added in order to robustify the controller with respect to parameter variations and disturbances.The synthesis of the regulator wasachieved by having recourse to advanced tools of nonlinearcontrol such as asymptotic stability in the sense of Lyapunov. The performance of the proposed controller is evaluated through numerical simulation in terms of delivering maximum power and synchronization of grid current with grid voltage under changes in atmospheric conditions.
In this paper, we present the recently implemented approach allowing dynamics systems to plan its... more In this paper, we present the recently implemented approach allowing dynamics systems to plan its actions, taking into account the environment perception changes, and to control their execution when uncertainty and incomplete knowledge are the major characteristics of the situated environment [1][2][3][4]. The control distributed architecture has three modules and the approach is related to hierarchical planning: the plan produced by the planner is further refined at the control layer that in turn supervises its execution by a functional level. We propose a new intelligent distributed architecture constituted by: Multi-Agent subsystem of the sensor, of the interpretation and representation of environment, of the dynamic localization and of the action. We tested this distributed architectue with dynamic system in the known environment.The autonomous vehicle task is described by an AND/OR graph in a propositional logic and decomposed in primitive actions. The distributed controlbased ...
Complex Systems Design & Management, Nov 20, 2018
The digital transformation of the Mining Industry is about to affect all organizational levels, f... more The digital transformation of the Mining Industry is about to affect all organizational levels, from manufacturing to maintenance. This revolution would be impossible without a modern Information and Communication Technologies (ICT) infrastructure. Maintenance management is a complex process requiring an effective combination of technical and economic expertise. This paper presents electromechanical systems condition-monitoring architecture, using the Systems Engineering Approach. The main function of the system is to extract and to identify physical parameters of the studied system for predictive maintenance strategy elaboration. The System's architecture based on the operational, functional and constructional visions is fundamental to define the action scope and its features, leading to avoid production breakdowns, to improve maintenance management and to minimize the related intervention costs. We used SysML diagrams to model the solution and hence to materialize the System targeting maintenance in industrial environment.
The Component Hybrid Dynamic Nets CHDN is a graphic model for hybrid dynamic systems. The CHDN al... more The Component Hybrid Dynamic Nets CHDN is a graphic model for hybrid dynamic systems. The CHDN allows an individual representation of every component in the hybrid system. On the base of this methodology a software tool dedicated to the electrical engineering simulation has been developed. So, the aim of this paper is to present a brief review of model’s structure and to describe the developed software which has been called SimRDH. In order to show the abilities of our tool, a motorisation device, including the use of the Fuel Cell and Supercapacitors hase been studied. The obtained results are encouraging especially in the development of simulator of E.V. areas.
Les logiciels de pilotage de production MES assurent les fonctions de contrôle d’exécution et per... more Les logiciels de pilotage de production MES assurent les fonctions de contrôle d’exécution et permettent de relier le système de gestion et le système de conduite et de supervision des différents machines. Parmi les fonctions assurées par un MES, il y a la fonction Analyse des Performances. Cependant, les entreprises ont besoin de méthodes pour bien spécifier leur système d’indicateurs de performance et pour les aider pour le déploiement. Dans cet article, nous proposons une méthodologie de modélisation et déploiement d’un Système d’Indicateurs de Performance en vue d’un pilotage d’un système de production. Nous allons nous baser sur les travaux sur la norme S95 qui ont été menés par l’ISA pour offrir un cadre pour la spécification des fonctions du système MES. Nous utiliserons le langage SysML pour la modélisation. Nous validons notre modèle par son application au pilotage d’une cellule flexible d’usinage.
The Journal of Quality in Education, 2017
La três forte contrainte de la mondialisation de l'économie génêre des besoins croissants en ... more La três forte contrainte de la mondialisation de l'économie génêre des besoins croissants en compétences, avec pour corollaire une révision des programmes de formation dans les systêmes éducatifs nationaux. A cela s'ajoutent, dans le contexte marocain, de nouveaux défis tels l'objectif de 10.000 ingénieurs par an à l'horizon 2010. Dans ce travail, nous traitons le cas de la formation de l'ingénieur électricien au sein de l'Ecole Supérieure d'Electricité et de Mécanique de Casablanca (ENSEM). Notre objectif est d'initier une démarche d'amélioration de la qualité de la formation dans cet établissement basée sur les besoins des entreprises considérées comme les clients de l'ENSEM, fournisseur de compétences sur le marché de l'emploi. Notre démarche a débuté par le recueil des besoins à travers une enquête auprês d'un échantillon d'entreprises du secteur d'activité concerné. A cette fin, nous avons segmenté le marché cible. Au p...
universities and high schools A major lever for a competitive Moroccan company
2016 International Conference on Electrical Sciences and Technologies in Maghreb (CISTEM), 2016
In this paper, We will be interested to the direct torque control (DTC) of an induction motor ass... more In this paper, We will be interested to the direct torque control (DTC) of an induction motor associated to the inverter (Inv-IM). This technique presents several advantages compared to other techniques such as vector control and field control. DTC permits to control directly the stator flux and the electromagnetic torque by selecting the appropriate vector voltage to be applied to the induction motor. In this work, I start by modeling the DTC of Inv-IM as a hybrid system (HS). Then, we abstract the continuous dynamics of the HS. We obtain a discrete event model of the HS. And finally, we use Supervisory Control Theory of DES to drive Inv-IM to a desired working point.