Time filter

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University of Technology of Compiègne, France

Jiang B.,Nanjing University of Aeronautics and Astronautics | Du D.,Nanjing University of Aeronautics and Astronautics | Cocquempot V.,Lille1 University
International Journal of Control, Automation and Systems | Year: 2011

This paper investigates the problem of fault detection filter design for discrete-time switched systems with interval time-varying delays. The residual generator is constructed based on a modedependent fault detection filter, i.e., the designed fault detection filter is also a switched system as well. By constructing a novel switched Lyapunov functional, a new criterion is obtained for the residual system. Based on this, a sufficient condition for the existence of the above filter is established in terms of linear matrix inequalities (LMIs). The designed fault detection filter can guarantee the difference between the generated residual signal and the fault signal as small as possible. An example is provided to illustrate the effectiveness of the proposed method. Copyright © ICROS, KIEE and Springer 2011.

Chiappori G.,Ecole Centrale Lille | Baranowski S.,Lille1 University | Cohin O.,Icam
IEEE International Symposium on Electromagnetic Compatibility | Year: 2014

This paper deals with the emissions induced by a power converter. The final aim is to achieve an optimal design of a power converter printed circuit board (PCB) in the early stage of simulation. This study is focused on a well known Buck converter which operates at a frequency around 1MHz. The load loop was performed of exaggerated dimensions to highlight the problem of radiation and to allow an analysis in detail. Taken into account the frequency and the structure of the converter, this first approach is focused on magnetic field. In order to evaluate the near field probe effects on the measurements results, the system 'converter-probe' is modeled using 3-D software (CST MWS) and then, the electromagnetic field radiated by the power converter is calculated and the results are compared with measurements. Two probes are studied, an industrial one and another made in laboratory. The comparison of simulations and measurements results are presented in order to evaluate the emissions induced by the converter and to study the influence of the probe in the measurement. © 2014 IEEE.

Alvarez J.,Play Research Laboratory | Alvarez J.,Lille1 University | Haudegond S.,Play Research Laboratory | Havrez C.,Play Research Laboratory | And 6 more authors.
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2014

The accelerated progress being made with interactive devices (such as screens, cameras, joysticks and tangible objects) has triggered the development of new interaction methods for applications (e.g., body language, haptic feedback, etc.). Video games and Serious Games are being played on increasingly innovative peripherals (e.g., Kinect, Wii Balance Board). These devices have generated new, intuitive forms of Human-Computer Interaction that are completely changing our usages. The purpose of this paper is to provide an overview of gaming technologies and suggest a framework for characterizing the role that screens play in these devices. This framework differentiates between the various gaming elements (the gamers, the interactive devices and the entertaining and gamified applications). This framework is a tool to analyze the effects of device choice and configuration. This paper presents an evaluation of the characterization of 15 serious games. This evaluation will provide a glimpse of the potentialities of the framework with respect to suggested criteria as well as of the trends and potential developments in interactive media. © 2014 Springer International Publishing.

Dennouni N.,Lille1 University | Peter Y.,Lille1 University | Lancieri L.,Lille1 University | Slama Z.,University Djilali Liabes
International Journal of Interactive Mobile Technologies | Year: 2014

We are in the transition to a new era where mobility extends to many aspects of our daily lives. Learning, for example, takes place throughout life and anywhere. One may wonder how the traditional orchestration of learning can be applied in a mobile context, for example, to better support students during field trips and museum visits. In this paper, we present a geographic orchestration of resources and activities associated to learning system. The objective is to consider collaboration in mobile learning scenario that depends heavily on the location of learners, their profiles and their activity logs. We also defined a software framework for the design and implementation of pedagogic scenarios of field trip. To validate our approach, we present the implementation of a mobile artifact dedicated to the support of new visitors in exploring the historic monuments of a city.

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