The Experts below are selected from a list of 24093 Experts worldwide ranked by ideXlab platform
Eric Rondeau - One of the best experts on this subject based on the ideXlab platform.
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Using fuzzy rules for Network behaviour identification: application for differentiated services in an Ethernet Network
International Journal of Computational Intelligence Systems, 2018Co-Authors: Vincent Bombardier, Jeanphilippe Georges, Eric Rondeau, Idriss DiouriAbstract:The Quality of Service (QoS) offered by a Network is based on criteria such as delay, jitter and message loss. QoS management is crucial to ensure that the Network respects the communication constraints defined by the application requirements. The Network must dynamically manage QoS according to the evolution of Network usage. To control QoS, the Network implements mechanisms to schedule and regulate traffic. The main issue is identifying the relationship between these mechanisms and their effects on QoS values. The objective of this paper is to propose a method, based on fuzzy logic, for identifying this relationship and reusing it to dynamically control QoS. This study only focuses on the impact of the Weighted Round Robin (WRR) scheduler on the delay in a switched Ethernet Network. The fuzzy controller is implemented in a Network simulation tool (Riverbed Modeler) to efficiently manage the delay in the Network.
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Evaluation of a switched Ethernet Network for the control of a quadrotor
2008Co-Authors: Idriss Diouri, Jeanphilippe Georges, Cédric Berbra, Sylviane Gentil, Eric RondeauAbstract:This paper deals with the co-design of a Networked Control System (NCS). The simulation of a 4-rotor helicopter using Matlab/Simulink is used as benchmark. The control law of this system is non linear and its observer uses data provided by an Inertial Measurement Unit. The controller and the rotors are interconnected by a Switched Ethernet Network. The objective of this paper is firstly to analyze the effects of perturbations induced by the Network on the helicopter control. Secondly, the goal is to tune the levels of Classification of Services (CoS) defined in such a Network to minimize the impact of communications on the helicopter behavior. The Network is simulated thanks to the TrueTime toolbox. A new TrueTime model enabling to represent the concept of CoS has been developed for achieving this study
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confronting the performances of a switched Ethernet Network with industrial constraints by using the Network calculus
International Journal of Communication Systems, 2005Co-Authors: Jeanphilippe Georges, Thierry Divoux, Eric RondeauAbstract:The Ethernet Network is more and more used to interconnect industrial devices. The objective of this paper is to study the performances of such a Network to support real-time communications. For this, first we propose a general representation to model a switched Ethernet Network by using a sequence of elementary components such as buffers, multiplexers, etc. Second, we aggregate the individual temporal properties of each component given in the Cruz' survey to obtain a global formula enabling one to calculate the maximum end-to-end delay for any industrial communication scenarios. Finally, we deduce the limits of the switched Ethernet Network regarding the number of input/output cards connected to the Network and to the sizes of periodic and aperiodic messages. Copyright © 2005 John Wiley & Sons, Ltd.
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Confronting the performances of a switched Ethernet Network with industrial constraints by using the Network calculus: Research Articles
International Journal of Communication Systems, 2005Co-Authors: Jeanphilippe Georges, Thierry Divoux, Eric RondeauAbstract:The Ethernet Network is more and more used to interconnect industrial devices. The objective of this paper is to study the performances of such a Network to support real-time communications. For this, first we propose a general representation to model a switched Ethernet Network by using a sequence of elementary components such as buffers, multiplexers, etc. Second, we aggregate the individual temporal properties of each component given in the Cruz' survey to obtain a global formula enabling one to calculate the maximum end-to-end delay for any industrial communication scenarios. Finally, we deduce the limits of the switched Ethernet Network regarding the number of input/output cards connected to the Network and to the sizes of periodic and aperiodic messages. Copyright © 2005 John Wiley & Sons, Ltd.
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Confronting the performances of a switched Ethernet Network with industrial constraints by using the Network calculus
International Journal of Communication Systems, 2005Co-Authors: Jeanphilippe Georges, Thierry Divoux, Eric RondeauAbstract:The Ethernet Network is more and more used to interconnect industrial devices. The objective of this paper is to study the performances of such a Network to support real-time communications. For this, first we propose a general representation to model a switched Ethernet Network by using a sequence of elementary components such as buffers, multiplexers, etc. Second, we aggregate the individual temporal properties of each component given in the Cruz' survey to obtain a global formula enabling one to calculate the maximum end-to-end delay for any industrial communication scenarios. Finally, we deduce the limits of the switched Ethernet Network regarding the number of input/output cards connected to the Network and to the sizes of periodic and aperiodic messages. Copyright © 2005 John Wiley & Sons, Ltd.
Jeanphilippe Georges - One of the best experts on this subject based on the ideXlab platform.
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Using fuzzy rules for Network behaviour identification: application for differentiated services in an Ethernet Network
International Journal of Computational Intelligence Systems, 2018Co-Authors: Vincent Bombardier, Jeanphilippe Georges, Eric Rondeau, Idriss DiouriAbstract:The Quality of Service (QoS) offered by a Network is based on criteria such as delay, jitter and message loss. QoS management is crucial to ensure that the Network respects the communication constraints defined by the application requirements. The Network must dynamically manage QoS according to the evolution of Network usage. To control QoS, the Network implements mechanisms to schedule and regulate traffic. The main issue is identifying the relationship between these mechanisms and their effects on QoS values. The objective of this paper is to propose a method, based on fuzzy logic, for identifying this relationship and reusing it to dynamically control QoS. This study only focuses on the impact of the Weighted Round Robin (WRR) scheduler on the delay in a switched Ethernet Network. The fuzzy controller is implemented in a Network simulation tool (Riverbed Modeler) to efficiently manage the delay in the Network.
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Evaluation of a switched Ethernet Network for the control of a quadrotor
2008Co-Authors: Idriss Diouri, Jeanphilippe Georges, Cédric Berbra, Sylviane Gentil, Eric RondeauAbstract:This paper deals with the co-design of a Networked Control System (NCS). The simulation of a 4-rotor helicopter using Matlab/Simulink is used as benchmark. The control law of this system is non linear and its observer uses data provided by an Inertial Measurement Unit. The controller and the rotors are interconnected by a Switched Ethernet Network. The objective of this paper is firstly to analyze the effects of perturbations induced by the Network on the helicopter control. Secondly, the goal is to tune the levels of Classification of Services (CoS) defined in such a Network to minimize the impact of communications on the helicopter behavior. The Network is simulated thanks to the TrueTime toolbox. A new TrueTime model enabling to represent the concept of CoS has been developed for achieving this study
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confronting the performances of a switched Ethernet Network with industrial constraints by using the Network calculus
International Journal of Communication Systems, 2005Co-Authors: Jeanphilippe Georges, Thierry Divoux, Eric RondeauAbstract:The Ethernet Network is more and more used to interconnect industrial devices. The objective of this paper is to study the performances of such a Network to support real-time communications. For this, first we propose a general representation to model a switched Ethernet Network by using a sequence of elementary components such as buffers, multiplexers, etc. Second, we aggregate the individual temporal properties of each component given in the Cruz' survey to obtain a global formula enabling one to calculate the maximum end-to-end delay for any industrial communication scenarios. Finally, we deduce the limits of the switched Ethernet Network regarding the number of input/output cards connected to the Network and to the sizes of periodic and aperiodic messages. Copyright © 2005 John Wiley & Sons, Ltd.
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Confronting the performances of a switched Ethernet Network with industrial constraints by using the Network calculus: Research Articles
International Journal of Communication Systems, 2005Co-Authors: Jeanphilippe Georges, Thierry Divoux, Eric RondeauAbstract:The Ethernet Network is more and more used to interconnect industrial devices. The objective of this paper is to study the performances of such a Network to support real-time communications. For this, first we propose a general representation to model a switched Ethernet Network by using a sequence of elementary components such as buffers, multiplexers, etc. Second, we aggregate the individual temporal properties of each component given in the Cruz' survey to obtain a global formula enabling one to calculate the maximum end-to-end delay for any industrial communication scenarios. Finally, we deduce the limits of the switched Ethernet Network regarding the number of input/output cards connected to the Network and to the sizes of periodic and aperiodic messages. Copyright © 2005 John Wiley & Sons, Ltd.
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Confronting the performances of a switched Ethernet Network with industrial constraints by using the Network calculus
International Journal of Communication Systems, 2005Co-Authors: Jeanphilippe Georges, Thierry Divoux, Eric RondeauAbstract:The Ethernet Network is more and more used to interconnect industrial devices. The objective of this paper is to study the performances of such a Network to support real-time communications. For this, first we propose a general representation to model a switched Ethernet Network by using a sequence of elementary components such as buffers, multiplexers, etc. Second, we aggregate the individual temporal properties of each component given in the Cruz' survey to obtain a global formula enabling one to calculate the maximum end-to-end delay for any industrial communication scenarios. Finally, we deduce the limits of the switched Ethernet Network regarding the number of input/output cards connected to the Network and to the sizes of periodic and aperiodic messages. Copyright © 2005 John Wiley & Sons, Ltd.
Laurent George - One of the best experts on this subject based on the ideXlab platform.
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Deterministic delay analysis of AVB switched Ethernet Networks using an extended Trajectory Approach
Real-Time Systems, 2017Co-Authors: Xiaoting Li, Laurent GeorgeAbstract:Audio Video Bridging (AVB) switched Ethernet is being considered as a promising Network alternative solution for the automotive industry thanks to its high data transmission rate and dedicated bandwidth for real-time traffic. However, guaranteeing deterministic communications of an AVB switched Ethernet Network remains a key issue for safety-critical applications in automotive domain. In order to ensure real-time timeliness constraints for any flow sent in AVB switched Ethernet Networks, we establish new bounds on the worst-case end-to-end delay of any flow. Our contributions are the following: (i) We first develop a worst-case delay analysis in the context of AVB switched Ethernet Network based on an extension of the Trajectory Approach. (ii) Then we take into account serialization constraints on frame transmissions to improve the computation of worst-case end-to-end delay bounds. (iii) Finally, we refine the proposed approach by taking into consideration the AVB traffic shaping characteristics. The performance of the proposed approach is illustrated on a set of representative automotive examples.
Adam Ziebinski - One of the best experts on this subject based on the ideXlab platform.
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CN - FPGA Based “Intelligent Tap” Device for Real-Time Ethernet Network Monitoring
Computer Networks, 2010Co-Authors: Rafal Cupek, Piotr Piękoś, Marcin Poczobutt, Adam ZiebinskiAbstract:This paper describes an “Intelligent Tap” – hardware device dedicated to support real-time Ethernet Networks monitoring. Presented solution was created as a student project realized in Institute of Informatics, Silesian University of Technology with support from Softing A.G company. Authors provide description of realized FPGA based “Intelligent Tap” architecture dedicated for Real-Time Ethernet Network monitoring systems. The practical device realization and feasibility study conclusions are presented also.
Thierry Divoux - One of the best experts on this subject based on the ideXlab platform.
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confronting the performances of a switched Ethernet Network with industrial constraints by using the Network calculus
International Journal of Communication Systems, 2005Co-Authors: Jeanphilippe Georges, Thierry Divoux, Eric RondeauAbstract:The Ethernet Network is more and more used to interconnect industrial devices. The objective of this paper is to study the performances of such a Network to support real-time communications. For this, first we propose a general representation to model a switched Ethernet Network by using a sequence of elementary components such as buffers, multiplexers, etc. Second, we aggregate the individual temporal properties of each component given in the Cruz' survey to obtain a global formula enabling one to calculate the maximum end-to-end delay for any industrial communication scenarios. Finally, we deduce the limits of the switched Ethernet Network regarding the number of input/output cards connected to the Network and to the sizes of periodic and aperiodic messages. Copyright © 2005 John Wiley & Sons, Ltd.
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Confronting the performances of a switched Ethernet Network with industrial constraints by using the Network calculus: Research Articles
International Journal of Communication Systems, 2005Co-Authors: Jeanphilippe Georges, Thierry Divoux, Eric RondeauAbstract:The Ethernet Network is more and more used to interconnect industrial devices. The objective of this paper is to study the performances of such a Network to support real-time communications. For this, first we propose a general representation to model a switched Ethernet Network by using a sequence of elementary components such as buffers, multiplexers, etc. Second, we aggregate the individual temporal properties of each component given in the Cruz' survey to obtain a global formula enabling one to calculate the maximum end-to-end delay for any industrial communication scenarios. Finally, we deduce the limits of the switched Ethernet Network regarding the number of input/output cards connected to the Network and to the sizes of periodic and aperiodic messages. Copyright © 2005 John Wiley & Sons, Ltd.
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Confronting the performances of a switched Ethernet Network with industrial constraints by using the Network calculus
International Journal of Communication Systems, 2005Co-Authors: Jeanphilippe Georges, Thierry Divoux, Eric RondeauAbstract:The Ethernet Network is more and more used to interconnect industrial devices. The objective of this paper is to study the performances of such a Network to support real-time communications. For this, first we propose a general representation to model a switched Ethernet Network by using a sequence of elementary components such as buffers, multiplexers, etc. Second, we aggregate the individual temporal properties of each component given in the Cruz' survey to obtain a global formula enabling one to calculate the maximum end-to-end delay for any industrial communication scenarios. Finally, we deduce the limits of the switched Ethernet Network regarding the number of input/output cards connected to the Network and to the sizes of periodic and aperiodic messages. Copyright © 2005 John Wiley & Sons, Ltd.
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evaluation of switched Ethernet in an industrial context by using the Network calculus
International Workshop on Factory Communication Systems, 2002Co-Authors: Jeanphilippe Georges, Eric Rondeau, Thierry DivouxAbstract:The Ethernet Network is more and more used to interconnect industrial devices. The objective is to study the performance of such a Network to support real-time communications. For this, we firstly propose a general representation to model a switched Ethernet Network by using a sequence of elementary components such as buffers, multiplexers, etc.. Secondly, we aggregate the individual temporal properties of each component given in the Cruz' (1991) survey to obtain a global formula enabling to calculate the maximum end-to-end delay for any industrial communication scenarios. Finally, we deduce the limits of the switched Ethernet Network regarding the number of input/output cards connected to the Network, to the sizes of periodic and aperiodic messages.
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Genetic algorithms for industrial Ethernet Network design
4th IEEE International Workshop on Factory Communication Systems, 1Co-Authors: Nicolas Krommenacker, Eric Rondeau, Thierry DivouxAbstract:The Ethernet Network is increasingly being used for industrial communications which are strongly time-constrained. This kind of Network is intrinsically nondeterministic and does not guarantee that communication end-to-end delays will be bounded. Nevertheless, from the observed traffic between industrial devices, some Network topologies improving the availability and temporal performances can be designed. This paper describes the use of a genetic algorithm approach for the optimisation and design of industrial control Networks. We propose to solve the combinatorial problem which consists of finding the best distribution of industrial devices on a switched Ethernet architecture with GA techniques, so that the required quality of service is provided.
