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Détail de l'auteur
Auteur M. Moallem
Documents disponibles écrits par cet auteur
Affiner la rechercheDesign and implementation of modular FPGA-based PID controllers / Chan, Yuen Fong in IEEE transactions on industrial electronics, Vol. 54 N°4 (Août 2007)
in IEEE transactions on industrial electronics > Vol. 54 N°4 (Août 2007) . - 1898-1906 p.
Titre : Design and implementation of modular FPGA-based PID controllers Titre original : Conception et exécution des contrôleurs FPGA-basés modulaires de PID Type de document : texte imprimé Auteurs : Chan, Yuen Fong, Auteur ; M. Moallem, Auteur ; Wang, Wei, Auteur Article en page(s) : 1898-1906 p. Note générale : Electronique Langues : Anglais (eng) Mots-clés : Distributed arithmetic (DA) Embedded controllers Field-programmable gate arrays (FPGAs) design Power and speed optimization Proportional-integral-derivative (PID) controller Arithmétique distribuée Contrôleurs incorporés Conception programmable de rangées de porte de champ Optimisation de puissance et de vitesse Contrôleur dérivé intégral proportionnel Index. décimale : 621 Ingénierie mécanique en général. Technologie nucléaire. Ingénierie électrique. Machinerie Résumé : In this paper, modular design of embedded feedback controllers using field-programmable gate array (FPGA) technology is studied. To this end, a novel distributed-arithmetic (DA)-based proportional–integral–derivative (PID) controller algorithm is proposed and integrated into a digital feedback control system. The DA-based PID controller demonstrates 80% savings in hardware utilization and 40% savings in power consumption compared to the multiplier-based scheme. It also offers good closed-loop performance while using less resources, resulting in cost reduction, high speed, and low power consumption, which is desirable in embedded control applications. The complete digital control system is built using commercial FPGAs to demonstrate the efficiency. The design uses a modular approach, so that some modules can be reused in other applications. These reusable modules can be ported into Matlab/Simulink as Simulink blocks for hardware/software cosimulation or integrated into a larger design in the Matlab/Simulink environment to allow for rapid prototyping applications.
Dans cette conception de papier et modulaire des contrôleurs incorporés de rétroaction employant la technologie programmable de la rangée de porte de champ (FPGA) est étudié. À cet effet, un roman a distribué l'arithmétique (DA) - le contrôleur (PID) dérivé intégral proportionnel basé que l'algorithme est proposé et intégré dans un système de commande numérique de rétroaction. Le contrôleur DA-basé de PID démontre l'épargne de 80% dans l'utilisation de matériel et l'épargne de 40% dans la puissance d'énergie comparée à l'arrangement multiplicateur-basé. Il offre également la bonne exécution de boucle bloquée tout en en utilisant moins de ressources, ayant pour résultat la réduction des coûts, la vitesse, et la consommation de basse puissance, qui est souhaitable dans des applications incluses de commande. Le système complet de commande numérique est établi en utilisant FPGAs commercial pour démontrer l'efficacité. La conception emploie une approche modulaire, de sorte que quelques modules puissent être réutilisés dans d'autres applications. Ces modules réutilisables peuvent être mis en communication dans Matlab/Simulink comme blocs de Simulink pour le cosimulation de matériel/logiciel ou être intégrés dans une plus grande conception dans l'environnement de Matlab/Simulink pour tenir compte des applications rapides de prototypage.DEWEY : 621 ISSN : 0278-0046 RAMEAU : Rétroaction (électronique) En ligne : mmoallem@sfu.ca [article] Design and implementation of modular FPGA-based PID controllers = Conception et exécution des contrôleurs FPGA-basés modulaires de PID [texte imprimé] / Chan, Yuen Fong, Auteur ; M. Moallem, Auteur ; Wang, Wei, Auteur . - 1898-1906 p.
Electronique
Langues : Anglais (eng)
in IEEE transactions on industrial electronics > Vol. 54 N°4 (Août 2007) . - 1898-1906 p.
Mots-clés : Distributed arithmetic (DA) Embedded controllers Field-programmable gate arrays (FPGAs) design Power and speed optimization Proportional-integral-derivative (PID) controller Arithmétique distribuée Contrôleurs incorporés Conception programmable de rangées de porte de champ Optimisation de puissance et de vitesse Contrôleur dérivé intégral proportionnel Index. décimale : 621 Ingénierie mécanique en général. Technologie nucléaire. Ingénierie électrique. Machinerie Résumé : In this paper, modular design of embedded feedback controllers using field-programmable gate array (FPGA) technology is studied. To this end, a novel distributed-arithmetic (DA)-based proportional–integral–derivative (PID) controller algorithm is proposed and integrated into a digital feedback control system. The DA-based PID controller demonstrates 80% savings in hardware utilization and 40% savings in power consumption compared to the multiplier-based scheme. It also offers good closed-loop performance while using less resources, resulting in cost reduction, high speed, and low power consumption, which is desirable in embedded control applications. The complete digital control system is built using commercial FPGAs to demonstrate the efficiency. The design uses a modular approach, so that some modules can be reused in other applications. These reusable modules can be ported into Matlab/Simulink as Simulink blocks for hardware/software cosimulation or integrated into a larger design in the Matlab/Simulink environment to allow for rapid prototyping applications.
Dans cette conception de papier et modulaire des contrôleurs incorporés de rétroaction employant la technologie programmable de la rangée de porte de champ (FPGA) est étudié. À cet effet, un roman a distribué l'arithmétique (DA) - le contrôleur (PID) dérivé intégral proportionnel basé que l'algorithme est proposé et intégré dans un système de commande numérique de rétroaction. Le contrôleur DA-basé de PID démontre l'épargne de 80% dans l'utilisation de matériel et l'épargne de 40% dans la puissance d'énergie comparée à l'arrangement multiplicateur-basé. Il offre également la bonne exécution de boucle bloquée tout en en utilisant moins de ressources, ayant pour résultat la réduction des coûts, la vitesse, et la consommation de basse puissance, qui est souhaitable dans des applications incluses de commande. Le système complet de commande numérique est établi en utilisant FPGAs commercial pour démontrer l'efficacité. La conception emploie une approche modulaire, de sorte que quelques modules puissent être réutilisés dans d'autres applications. Ces modules réutilisables peuvent être mis en communication dans Matlab/Simulink comme blocs de Simulink pour le cosimulation de matériel/logiciel ou être intégrés dans une plus grande conception dans l'environnement de Matlab/Simulink pour tenir compte des applications rapides de prototypage.DEWEY : 621 ISSN : 0278-0046 RAMEAU : Rétroaction (électronique) En ligne : mmoallem@sfu.ca
in IEEE transactions on energy conversion > Vol. 25, N° 3 (Septembre 2010) . - pp. 589 - 597
Titre : Double-stator switched reluctance machines (DSSRM) : fundamentals and magnetic force analysis Type de document : texte imprimé Auteurs : Abbasian, M., Auteur ; M. Moallem, Auteur ; Fahimi, B., Auteur Année de publication : 2011 Article en page(s) : pp. 589 - 597 Note générale : energy conversion Langues : Anglais (eng) Mots-clés : finite element analysis; inductance; reluctance machines; stators Résumé : In this paper, a new switched reluctance machine with a double-stator configuration (DSSRM) is introduced. The proposed design is based on optimization of the motional forces, which leads to a high-grade electromechanical energy conversion process. A local examination of the force densities within and throughout a conventional switched reluctance machine (SRM) shows that the majority of the force produced is in the radial direction and does not contribute to motion. If the normal forces happen to be in the direction of motion, a larger motional force profile for SRM is yield. Based on these guidelines, a new SRM (DSSRM) is proposed. To compare energy conversion efficiency of DSSRM with that of the conventional SRM, a finite element model is constructed. An experimental prototype of the proposed machine is developed, and the phase inductance is measured. The results of our investigations indicate that the proposed geometry offers superior performance in terms of higher power density and higher percentage of the motional forces. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5546930&sortType%3Das [...] [article] Double-stator switched reluctance machines (DSSRM) : fundamentals and magnetic force analysis [texte imprimé] / Abbasian, M., Auteur ; M. Moallem, Auteur ; Fahimi, B., Auteur . - 2011 . - pp. 589 - 597.
energy conversion
Langues : Anglais (eng)
in IEEE transactions on energy conversion > Vol. 25, N° 3 (Septembre 2010) . - pp. 589 - 597
Mots-clés : finite element analysis; inductance; reluctance machines; stators Résumé : In this paper, a new switched reluctance machine with a double-stator configuration (DSSRM) is introduced. The proposed design is based on optimization of the motional forces, which leads to a high-grade electromechanical energy conversion process. A local examination of the force densities within and throughout a conventional switched reluctance machine (SRM) shows that the majority of the force produced is in the radial direction and does not contribute to motion. If the normal forces happen to be in the direction of motion, a larger motional force profile for SRM is yield. Based on these guidelines, a new SRM (DSSRM) is proposed. To compare energy conversion efficiency of DSSRM with that of the conventional SRM, a finite element model is constructed. An experimental prototype of the proposed machine is developed, and the phase inductance is measured. The results of our investigations indicate that the proposed geometry offers superior performance in terms of higher power density and higher percentage of the motional forces. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5546930&sortType%3Das [...]
in Transactions of the ASME . Journal of dynamic systems, measurement, and control > Vol. 133 N° 6 (Novembre 2011) . - 09 p.
Titre : Friction hysteresis modeling and force control in a constrained single-link arm Type de document : texte imprimé Auteurs : Bazaei, Ali, Auteur ; M. Moallem, Auteur Année de publication : 2012 Article en page(s) : 09 p. Note générale : Dynamic systems Langues : Anglais (eng) Mots-clés : Force control Friction Hysteresis Manipulator dynamics Index. décimale : 553 Géologie économique. Minérographie. Minéraux. Formation et gisements de minerais Résumé : In this paper, we study friction characteristics of a constrained planar single-link arm in applications, where control of the end-point interaction force is required. The objective is to improve performance of a force control system by developing an adequate friction model. It is shown that hub friction increases with the applied force with the end-point force exhibiting significant hysteresis behavior. A friction model is presented for capturing these phenomena and compared with the widely used LuGre friction model. Effectiveness of the proposed model for friction compensation is further examined on an experimental force control system testbed. DEWEY : 553 ISSN : 0022-0434 En ligne : http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JDSMAA000133000006 [...] [article] Friction hysteresis modeling and force control in a constrained single-link arm [texte imprimé] / Bazaei, Ali, Auteur ; M. Moallem, Auteur . - 2012 . - 09 p.
Dynamic systems
Langues : Anglais (eng)
in Transactions of the ASME . Journal of dynamic systems, measurement, and control > Vol. 133 N° 6 (Novembre 2011) . - 09 p.
Mots-clés : Force control Friction Hysteresis Manipulator dynamics Index. décimale : 553 Géologie économique. Minérographie. Minéraux. Formation et gisements de minerais Résumé : In this paper, we study friction characteristics of a constrained planar single-link arm in applications, where control of the end-point interaction force is required. The objective is to improve performance of a force control system by developing an adequate friction model. It is shown that hub friction increases with the applied force with the end-point force exhibiting significant hysteresis behavior. A friction model is presented for capturing these phenomena and compared with the widely used LuGre friction model. Effectiveness of the proposed model for friction compensation is further examined on an experimental force control system testbed. DEWEY : 553 ISSN : 0022-0434 En ligne : http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JDSMAA000133000006 [...]
in IEEE transactions on energy conversion > Vol. 23 n°2 (Juin 2008) . - pp. 690 - 700
Titre : Simulation of a wind turbine with doubly fed induction generator by FAST and simulink Type de document : texte imprimé Auteurs : Fadaeinedjad, R., Auteur ; M. Moallem, Auteur ; Moschopoulos, G., Auteur Année de publication : 2008 Article en page(s) : pp. 690 - 700 Note générale : Energy conversion Langues : Anglais (eng) Mots-clés : Aerodynamics; asynchronous generators; power system simulation; wind turbines Résumé : In order to fully study the electrical, mechanical, and aerodynamic aspects of a wind turbine with a doubly fed induction generator, a detailed model that considers all these aspects must be used. A drawback of many works in the area of wind turbine simulation is that either a very simple mechanical model is used with a detailed electrical model, or vice versa. Hence, the effects of interactions between electrical and mechanical components are not accurately taken into account. In this paper, three simulation programs - TurbSim, FAST, and Simulink - are used to model the wind, mechanical and electrical parts of a wind turbine, and its controllers. Simulation results obtained from the model are used to observe the interaction of all three factors affecting the operation of a wind turbine system. For example, it is shown how an electrical disturbance can cause dangerous tower vibrations under high speed and turbulent wind conditions, which may not be feasible using a simple model of the wind and wind turbine. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4457821&sortType%3Das [...] [article] Simulation of a wind turbine with doubly fed induction generator by FAST and simulink [texte imprimé] / Fadaeinedjad, R., Auteur ; M. Moallem, Auteur ; Moschopoulos, G., Auteur . - 2008 . - pp. 690 - 700.
Energy conversion
Langues : Anglais (eng)
in IEEE transactions on energy conversion > Vol. 23 n°2 (Juin 2008) . - pp. 690 - 700
Mots-clés : Aerodynamics; asynchronous generators; power system simulation; wind turbines Résumé : In order to fully study the electrical, mechanical, and aerodynamic aspects of a wind turbine with a doubly fed induction generator, a detailed model that considers all these aspects must be used. A drawback of many works in the area of wind turbine simulation is that either a very simple mechanical model is used with a detailed electrical model, or vice versa. Hence, the effects of interactions between electrical and mechanical components are not accurately taken into account. In this paper, three simulation programs - TurbSim, FAST, and Simulink - are used to model the wind, mechanical and electrical parts of a wind turbine, and its controllers. Simulation results obtained from the model are used to observe the interaction of all three factors affecting the operation of a wind turbine system. For example, it is shown how an electrical disturbance can cause dangerous tower vibrations under high speed and turbulent wind conditions, which may not be feasible using a simple model of the wind and wind turbine. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4457821&sortType%3Das [...]
in IEEE transactions on energy conversion > Vol. 24 N°1 (Mars 2009) . - pp. 102 - 111
Titre : The impact of tower shadow, yaw error, and wind shears on power quality in a wind–diesel system Type de document : texte imprimé Auteurs : Fadaeinedjad, R., Auteur ; Moschopoulos, G., Auteur ; M. Moallem, Auteur Année de publication : 2009 Article en page(s) : pp. 102 - 111 Note générale : energy conversion Langues : Anglais (eng) Mots-clés : Diesel-electric generators; hybrid power systems; power supply quality; power system analysis computing; wind turbines Résumé : To study the impact of aerodynamic aspects of a wind turbine (WT) (i.e., tower shadow, wind shears, yaw error, and turbulence) on the power quality of a wind-diesel system, all electrical, mechanical, and aerodynamic aspects of the WT must be studied. Moreover, the contribution of the diesel generator system and its controllers should be considered. This paper describes how the aerodynamic and mechanical aspects of a WT can be simulated using TurbSim, AeroDyn, and FAST where the electrical parts of WT, diesel generator, its controllers, and electrical loads are modeled by Simulink blocks. Simulation results obtained from the model are used to observe the power and voltage variations at the WT generator terminals under different operating conditions. Furthermore, the effects of tower shadow, wind shears, yaw error, and turbulence on the power quality in a stand-alone wind-diesel system utilizing a fixed-speed WT are studied. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4760263&sortType%3Das [...] [article] The impact of tower shadow, yaw error, and wind shears on power quality in a wind–diesel system [texte imprimé] / Fadaeinedjad, R., Auteur ; Moschopoulos, G., Auteur ; M. Moallem, Auteur . - 2009 . - pp. 102 - 111.
energy conversion
Langues : Anglais (eng)
in IEEE transactions on energy conversion > Vol. 24 N°1 (Mars 2009) . - pp. 102 - 111
Mots-clés : Diesel-electric generators; hybrid power systems; power supply quality; power system analysis computing; wind turbines Résumé : To study the impact of aerodynamic aspects of a wind turbine (WT) (i.e., tower shadow, wind shears, yaw error, and turbulence) on the power quality of a wind-diesel system, all electrical, mechanical, and aerodynamic aspects of the WT must be studied. Moreover, the contribution of the diesel generator system and its controllers should be considered. This paper describes how the aerodynamic and mechanical aspects of a WT can be simulated using TurbSim, AeroDyn, and FAST where the electrical parts of WT, diesel generator, its controllers, and electrical loads are modeled by Simulink blocks. Simulation results obtained from the model are used to observe the power and voltage variations at the WT generator terminals under different operating conditions. Furthermore, the effects of tower shadow, wind shears, yaw error, and turbulence on the power quality in a stand-alone wind-diesel system utilizing a fixed-speed WT are studied. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4760263&sortType%3Das [...]
