Experimental study on the viability of decentralized railway traffic management
COMPRAIL 2020 : 17th International Conference on Railway Engineering Design & Operation, Berlin, ALLEMAGNE, 01-/07/2020 - 03/09/2020
Set-membership estimation for linear time-varying descriptor systems
This paper considers the problem of set-membership estimation for discrete-time linear time-varying descriptor systems subject to unknown but bounded disturbance and noise. We propose a set-membership estimation method based on a descriptor system observer and a zonotopic estimator of the observer error bounds. The observer parameters are optimized...
Calibrating models for MPC of energy systems in buildings using an adjoint-based sensitivity method
For several years, Model Predictive Control (MPC) is depicted in the literature as a promising way to increase buildings' energy efficiency during operation. This model-based control technique uses the optimal control theory to provide a constraint compliant, anticipative control, maximizing performance criteria. However, building and calibrating a...
Response time evaluation of industrial-scale distributed control systems by discrete event systems formalisms
This research deals with the temporal performance analysis of distributed networked automation systems. It describes a new formal approach that estimates the maximum limit of response time in Networked Control Systems (NCS) that use a producer/consumer protocol. Two different tools of discrete event systems have been used: Timed Event Graphs (TEGs)...
Optimisation combinatoire intégrée de la gestion du matériel roulant et de la circulation ferroviaire dans les gares de ...
Les gares ferroviaires concentrant les fins et les débuts de trajets des trains structurent l'essentiel de l'exploitation de lignes pour passagers. En effet, on y programme des opérations de préparation du matériel roulant (nettoyage, accouplement des trains. . . ) dites de « produit train » indispensables à la qualité de service. Ces opérations im...
A Dynamic Game Formulation for Cooperative Lane Change Strategies at Highway Merges
A dynamic game framework is put forward to derive the system optimum strategy for a network of cooperative vehicles interacting at a merging bottleneck with simpli_ed vehicle dynamics model. Merging vehicles minimize the distance travelled on the acceleration lane in addition to the same cost terms of the mainline vehicles, taking into account the ...
Transforming Time-Delay System Observers to Adaptive Observers
For joint estimation of states and parameters in time varying time-delay systems (TDS) involving both distributed and lumped time-delays, a general approach is proposed in this paper to transforming existing (non adaptive) observers to adaptive observers. In addition to the convergence conditions of the considered existing observers, a persistent e...
Experimental study on the viability of decentralized railway traffic management
In this paper we propose an experimental study aimed to assess a new paradigm for railway traffic management. In current practice and academic state of the art, train priority decisions in case of perturbation are made centrally. In this work, train traffic is modelled as a multi-agent system in which trains are decision makers. We implement a micr...
Prospects on the application of necessary optimality conditions on the resolution of the Goddard problem with unknown bo...
International audience
Optimal guidance for toss back concepts of Reusable Launch Vehicles
In the context of the development of future launchers, Toss Back concepts are being studied by CNES together with ONERA. Focusing on the recovery phase between end of ascent and start of the landing boost, a guidance algorithm using an indirect method of optimal control based on Pontryagin's Maximum Principle is presented. First, a reference trajec...
