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2018 International Conference on control, Automation and Diagnosis, ICCAD 2018

作者： Abadi, Amine Hadj Brahim, Anis Ben Mekki, Hassen Amraoui, Adnen El Ramdani, Nacim Networked Objects Control and Communication Systems Laboratory National Engineering School of Sousse University of Sousse Tunisia University of Sousse National Engineering School of Sousse Tunisia Univ. Orléans INSA CVL PRISME EA 4229 OrléansF45072 France

ISBN: (纸本)9781538654071

In this work, the differential flatness property and the sliding mode controller design are proposed for a quadrotor in order to track a predefined reference trajectory despite the presence of uncertain parameters. Firstly, differential flatness is utilized to resolve the problem for trajectory generation and tracking for the quadrotor. Next, a sliding controller is combined with a flatness design to guarantee the robustness of the tracking strategy. The numerical simulations of quadrotor system are done in order to evaluate the performance of the suggested control scheme. © 2018 IEEE.

关键词： Sliding mode control

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Parallel video processing on FPGA architecture

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International Journal of High Performance systems Architecture 2018年第3期8卷 169-178页

作者： Touil, Lamjed Abdelali, Abdessalem Ben Kechiche, Lilia Chaieb, Chiheb Ouni, Bouraoui Mtibaa, Abdellatif Networked Objects Control and Communications Systems Laboratory ENISo Higher Institute of Applied Sciences and Technology of Sousse University of Sousse Tunisia Laboratory of Electronics and Microelectronics University of Monastir Tunisia Higher Institute of Applied Sciences and Technology of Sousse University of Sousse Tunisia Networked Objects Control and Communications Systems Laboratory ENISo University of Sousse Tunisia

Real-time video applications are becoming widely used in many domains with more demand for high performance. Video processing is intensive and habitually has accompanying real-time or super-real-time requirements. Such us, multiple cameras are used in monitoring and surveillance systems in automatically real-time analyse video to detect unusual events. Due to the strong computational imposed by video algorithms, real-time video treatment is notably amenable to concurrent processing. Classical implementation solutions whether based on general purpose processors or dedicated ones like DSP cannot fulfil wanted performance. In this article, we focus on the applicability of computing reconfigurable architectures to parallel video processing applications. The experiment results show that the proposed hardware-oriented multi-treatment architecture can provide an average frame rate of 45 frames/s at high definition resolution. Statistics show a consumption about 18% of logic resources and 27% of on chip memory which gives the possibility to integrate additional treatments. Copyright © 2019 Inderscience Enterprises Ltd.

关键词： Reconfigurable architectures

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Sliding Mode control of Quadrotor based on Differential Flatness

Sliding Mode Control of Quadrotor based on Differential Flat...

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International Conference on control, Automation and Diagnosis (ICCAD)

作者： Amine Abadi Anis Ben Hadj Brahim Hassen Mekki Adnen El Amraoui Nacim Ramdani National Engineering School Of Sousse Networked Objects Control and Communication Systems Laboratory Tunisia National Engineering School Of Sousse University of Sousse Univ. Orléans Orléans France

ISBN: (纸本)9781538654088

关键词： Trajectory Mathematical model Sliding mode control Robustness Drones Atmospheric modeling

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Synchronous system design for a high speed treatment and optimized dynamic power

Synchronous system design for a high speed treatment and opt...

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2017 International Conference on Engineering and Technology, ICET 2017

作者： Ben Haj Hassine, Siwar Ouni, Bouraoui Networked Objects Control and Communication Systems Lab National Engineering School of Sousse Sousse University BP 264 Sousse Sousse Tunisia

ISBN: (纸本)9781538619490

In the design of current microelectronic systems, low power is extremely needed since it is the key concern for embedded applications. Besides, a faster treatment is definitely required in a word overshadowed by digital technologies. For that, we propose a new design of synchronous circuit based on a detector avoider block that is intended to optimize two important parameters: power and response time, simultaneously. Our proposed design has been implemented and compared to existing ones. The design results have shown a significant gain in terms of dynamic power as well as in terms of response time compared to existing designs, without negatively influencing other constraints. To further improve the efficiency of our method, the gain has been proved by the physical level. © 2017 IEEE.

关键词： Embedded systems

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Algorithm for readers arrangement without collision in RFID networks 18

Algorithm for readers arrangement without collision in RFID ...

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18th International Conference on Parallel and Distributed Computing, Applications and Technologies, PDCAT 2017

作者： Meddeb, Aref Jaballah, Atef Institute of Computer Science and Communication Technologies University of Sousse Hammam Sousse Tunisia NOCCS Laboratory: Networked Objects Control and Communication Systems Tunisia National Engineering School of Sousse University of Sousse Tunisia

ISBN: (纸本)9781538631515

Radio Frequency IDentification (RFID) was identified as one of the ten best technologies in the 21st century. This technology is frequently used in different sectors: industrial, agricultural and academic. In RFID networks, readers and tags communicate wirelessly through electromagnetic signals. Due to the optimized tag coverage, multiple readers must be deployed in the same working area, causing reader-to-reader or/and readerto- tag collisions. In addition, the RFID reader is characterized by a maximum number of tags that can read them and a maximum interrogation range. Then the problem of activating the RFID readers and adjusting their interrogation ranges in order to cover the maximum number of tags without collisions is one of hot spot researches in RFID networks. This problem is known as the Reader Coverage Collision Avoidance Arrangement (RCCAA) problem. In the literature, an algorithm called the Maximum-Weight-Independent-Set-Based Algorithm (MWISBA) was put forward to solve the RCCAA problem. In this algorithm, only the interrogation ranges of readers where adjusted. The interference range was not taken into account. Thus, a readerto- reader collision could occur if a reader interrogated a tag located in the overlap area of its interrogation area with the interference area of another reader. To fill in this gap, we propose an improvement of the MWISBA called the MWISBAII which is able to solve the RCCAA problem avoiding all types of collisions. The experimental results show the superiority of our algorithm compared with the state-of-the-art solutions. © 2017 IEEE.

关键词： Radio waves

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Experimental validation of flatness control for path planning and tracking for a quadrotor

Experimental validation of flatness control for path plannin...

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2017 International Conference on Engineering and MIS, ICEMIS 2017

作者： Chelly, Nizar Mekki, Hassen Ibrahim, Anis Belhadj Networked Objects Control Communication Systems Lab National School of Engineering Sousse Sousse University Tunisia National School of Engineering Sousse Sousse University Tunisia

ISBN: (纸本)9781509067787

In this paper, we investigates the problem of planning and tracking trajectory for a non linear system which is the quadrotor using the flatness theory. The proposed flatness algorithm is real time implemented. The Experimental results using this solution validate the design control along a pre defined trajectory as well as the response of the AR Drone under disturbances is evaluated. © 2017 IEEE.

关键词： Nonlinear systems

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Systemized software hardware partitioning algorithm for system on programmable chip to minimize logic power

Systemized software hardware partitioning algorithm for syst...

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2017 International Conference on Engineering and MIS, ICEMIS 2017

作者： Jemai, Mehdi Ben Haj Hassine, Siwar Mtibaa, Abdellatif Ouni, Bouraoui Laboratory of Electronic and Microelectronic National Engineering School of Monastir University of Monastir Monastir5000 Tunisia Networked Objects Control and Communication Systems Laboratory National Engineering School of Sousse University of Sousse Sousse4023 Tunisia

ISBN: (纸本)9781509067787

To reduce the power consumption, in the literature, most works have focused in the field of batteries. However despite the progress made in this area, it is difficult to increase the battery capacity without increasing the weight, volume and price. To overcome such problems, in this paper we present a new approach based on hardware-software partitioning to reduce power consumption. In fact, in this paper we aim to solve the following issue: Given a control data flow graph a System on a Programmable Chip circuit;find a possible hardware-software partitioning of the graph on the System on a Programmable Chip in order to minimize the logic power and satisfying a temporal constraint. © 2017 IEEE.

关键词： Electric power utilization

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Optimal trajectory generation and flatness tracking control for a mobile robot 18

Optimal trajectory generation and flatness tracking control ...

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18th International Conference on Sciences and Techniques of Automatic control and Computer Engineering, STA 2017

作者： Abadi, Amine Mekki, Hassen Ben Hadj Brahim, Anis El Amraoui, Adnen Ramdani, Nacim National Engineering School of Sousse University of Sousse Networked Objects Control and Communication Systems Laboratory Tunisia Univ. Orléans INSA CVL PRISME EA 4229 OrleansF45072 France

ISBN: (纸本)9781538610848

This work proposes an optimal trajectory generation and a controller design for a mobile robot. The objective consists of creating a new performance guidance module for the mobile robot in a closed environment. The reference trajectory can be calculated by solving an optimization problem. The properties of the differential flatness, the B-spline and the direct collocation method are exploited to convert the constrained optimization problem into a nonlinear programming one that can be easily resolved by a classic solver. After that, the obtained optimal reference trajectory is used in the kinematic mobile robot model. A flatness-based controller is designed to ensure the trajectory tracking. The numerical simulations are done in order to evaluate the proposed optimal trajectory generation approach and the tracking strategy. © 2017 IEEE.

关键词： Mobile robots

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Detecting Video Saliency via Local Motion Estimation

Detecting Video Saliency via Local Motion Estimation

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ACS/IEEE International Conference on Computer systems and Applications

作者： Rahma Kalboussi Aymen Azaza Mehrez Abdellaoui Ali Douik ENISO Ecole Nationale d'Ingénieurs de Sousse NOCCS Networked Objects Control and Communication Systems Laboratory Soussel Tunisiay ENIM Ecole Nationale d'Ingénieurs de Monastir NOCCS Laboratory Monastir Tunisia ENISO NOCCS Laboratory Sousse Tunisia

In the last decades, saliency detection was extensively studied. The number of computational models that help to detect salient regions in still images is increasing, whereas, detecting salient regions in videos is in its early stages. In this paper we propose a video saliency detection method using local motion estimation. Starting from a patch, the problem of saliency detection is modeled as a growing region starting from a region which contains the higher motion information to the background. Local saliency is measured by combining local motion estimation and local surrounding contrast which leads to the construction of foreground and background patches. Experiments have proved that The proposed method outperforms state-of-the-art methods over two benchmark datasets.

关键词： Saliency detection Motion measurement Computational modeling Motion estimation Feature extraction Image color analysis Dynamics

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Leader-follower synchronization for complex dynamical networks via sampled-data control

Leader-follower synchronization for complex dynamical networ...

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31st Chinese control Conference, CCC 2012

作者： Wangli, He Feng, Qian Han, Qing-Long Key Laboratory of Advanced Control and Optimization for Chemical Processes Ministry of Education East China University of Science and Technology Shanghai 200237 China Centre for Intelligent and Networked Systems Central Queensland University Rockhampton QLD 4702 Australia School of Information and Communication Technology Central Queensland University Rockhampton QLD 4702 Australia

ISBN: (纸本)9789881563811

This paper is concerned with leader-follower synchronization of complex dynamical networks with sampled-data control. By sampling the signal from the leader at some discrete time instants and using a zero-order hold function, synchronization is achieved between the network and a desired orbit, known as the leader. By applying Lyapunov functional approach and the property of the network topology matrix, a delay-dependent criterion is derived. It is shown that synchronization of N coupled dynamical systems with a leader can be recast into the stability of N decoupled systems, in which eigenvalues of the network topology matrix are involved. Finally, a chaotic neural network is used to illustrate the effectiveness of the proposed method. © 2012 Chinese Assoc of Automati.

关键词： Synchronization

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