Philippe Le Parc

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This paper presents the internet-based remote control of mobile robot. To face unpredictable Internet delays and possible connection rupture, a direct teleoperation architecture with “Speed Limit Module” (SLM) and “Delay Approximator” (DA) is proposed. This direct control architecture guarantees the path error of the robot motion is restricted within the(More)
This paper presents the use of virtual reality in the context of remote control. Virtual reality may be used in a classical manner in order to simulate the behavior of a system, but also in parallel with the real system in order to improve the quality of the control, making it possible to deal with time delays induced by the network. Our proposal may be(More)
Network security is a crucial issue of Software Defined Networking (SDN). It is probably, one of the key features for the success and for the future pervasion of the SDN technology. In this perspective, we propose a SDN reactive stateful firewall. Our solution is integrated into the SDN architecture. It filters TCP communications according to the network(More)
Applications described by Sequential Function Chart (SFC) often being critical, we have investigated the possibilities of program checking. In particular, physical time can be handled by SFC programs using temporisations, which is why we are interested in the quantitative temporal properties. We have proposed a modeling of SFC in timed automata, a formalism(More)
The Grafcet (or sequential function charts) language is a graphic language often offered in programmable logic control systems (PLC) used for industrial control-command applications. Modeling of Grafcet by the synchronous data-flow language Signal gives both explicit semantics, and the corresponding simulator. The translation into a graph of tasks makes it(More)
This paper describes a way to transform basic robotic platforms into Web remotely controllable robots. Our goal is to achieve robot deployment anywhere at anytime at low-cost. As soon as full or even restricted Internet access is available (WIFI or 3G), the robot can be deployed and Webcontrolled. The distant user can send commands to the robot and monitor(More)
This paper presents an original performance analysis applied to a flow-shop system driven by a set of local command units and a central controller. The performance evaluation is done with a timed coloured Petri net model. Simulation results show needs for bounding the controller response time in order to meet production targets.