2011 |
Jemai, W J; Jerbi, H; Abdelkrim, M N Nonlinear state feedback design for continuous polynomial systems Article de journal Dans: International Journal of Control, Automation and Systems, vol. 9, no. 3, p. 566-573, 2011, (Cited By :6). Liens | BibTeX | Étiquettes: scopus @article{, |
Boussaid, B; Aubrun, C; Abdelkrim, N Set-point reconfiguration approach for the FTC of wind turbines Proceedings Article Dans: IFAC Proceedings Volumes (IFAC-PapersOnline), p. 12395-12400, 2011, (Cited By :9). Liens | BibTeX | Étiquettes: scopus @inproceedings{, |
Chetoui, M.; Malti, R.; Thomassin, M.; Aoun, M.; Najar, S.; Abdelkrim, M. N. 2011, (Cited by: 3). Résumé | Liens | BibTeX | Étiquettes: Continuous time systems, Cumulants, Errors in variables, Fractional derivatives, Fractional SVF, High order statistics, Identification (control systems), Indium compounds, Least squares approximations, Numerical methods, Religious buildings, Signal to noise ratio @conference{Chetoui2011b, This paper deals with continuous-time system identification using fractional models in a noisy input/output context. The third-order cumulants based least squares method (tocls) is extended here to fractional models. The derivatives of the third-order cumulants are computed using a new fractional state variable filter. A numerical example is used to demonstrate the performance of the proposed method called ftocls (fractional third-order cumulants based least squares). The effect of the signal-to-noise ratio and the hyperparameter is studied. © 2011 IEEE. |
2010 |
Abdelkrim, Nouceyba; Tellili, Adel; Abdelkrim, Mohamed Naceur Composite control of a delayed singularly perturbed system by using Lambert-W function Proceedings Article Dans: 2010 7th International Multi- Conference on Systems, Signals and Devices, p. 1-4, 2010. Résumé | Liens | BibTeX | Étiquettes: Equations;Adaptive control;Control systems;singularly perturbed system;Order reduction;composite control;Lambert-W function;time-delay system @inproceedings{5585577, The composite state feedback control designed for singularly perturbed system SPS with small time-delay by using Lambert-W function is proposed in this paper. Based on the delayed slow subsystem (SS) and fast subsystems (FS) decomposition, we design a composite sate-feedback control. So the gain of delayed SS will be designed by using Lambert-W function and the gain of FS will be designed on the basis of classical pole placement method, and the two gains will be regrouped in global gain to design the delayed SPS. A numerical example is presented to illustrate the effectiveness of the proposed design approach. |
Challouf, Amina; Abdelkrim, Nouceyba; Tellili, Adel; Abdelkrim, Mohamed Naceur; Aubrun, Christophe AN adaptive fault tolerante control in interconnected systems Proceedings Article Dans: 2010 7th International Multi- Conference on Systems, Signals and Devices, p. 1-6, 2010. Résumé | Liens | BibTeX | Étiquettes: Adaptive control;Electronic mail;Sensors;Adaptive control;Additive control;Fault tolerant control;Interconnected Systems;Sensor failure @inproceedings{5585529, This work aims at the adaptive fault tolerant control using output feedback. Fault tolerant adaptive control is developed for N-interconnected subsystems with unknown sensors failures. Such sensors failures are characterized by some unknown inputs stuck at some unknown fixed values at unknown time instants. An effective output feedback controller structure is proposed for sensors failures compensation. The FTC scheme has an additive control in the adaptive controller which has an intrinsic robustness in terms of the stability and performance of the estimation sensors failure. This work is an extension of the additive control method presented in to the interconnected subsystems. Numerical and simulation results are provided to demonstrate the effectiveness of the proposed controller. |
Amairi, M.; Aoun, M.; Najar, S.; Abdelkrim, M. N. A constant enclosure method for validating existence and uniqueness of the solution of an initial value problem for a fractional differential equation Article de journal Dans: Applied Mathematics and Computation, vol. 217, no. 5, p. 2162 – 2168, 2010, (Cited by: 18). Résumé | Liens | BibTeX | Étiquettes: Caputo fractional derivatives, Differential equations, Enclosures, Existence and uniqueness, Fractional order, Initial value problems, Initial values, Interval analysis, Nonlinear equations, Validated computing @article{Amairi20102162b, This paper presents a new method for validating existence and uniqueness of the solution of an initial value problems for fractional differential equations. An algorithm selecting a stepsize and computing a priori constant enclosure of the solution is proposed. Several illustrative examples, with linear and nonlinear fractional differential equations, are given to demonstrate the effectiveness of the method. © 2010 Elsevier Inc. All rights reserved. |
Al-Salami, I. M.; Chabir, K.; Sauter, D.; Aubrun, C. Adaptive thresholding for fault detection in networked control systems Conférence 2010, ISBN: 9781424453627, (cited By 4). Résumé | Liens | BibTeX | Étiquettes: Adaptive control systems, Adaptive thresholding; Adaptive thresholds; Control inputs; False alarm rate; Networked control systems; Residual generation; Unknown inputs, Control system analysis; Fault detection @conference{Al-Salami2010446, This paper studies the problem of fault detection in networked control systems. In the residual generation, the effect of the networked induced bounded delays as well as the noise is reduced. The minimization of false alarm rate caused from unknown inputs as well as the variation of control inputs is achieved in the residual evaluation stage. This includes the design of an adaptive threshold. An illustrating example is given to show the efficiency of the obtained results. © 2010 IEEE. |
Amairi, Messaoud; Aoun, Mohamed; Najar, Slaheddine; Abdelkrim, Mohamed Naceur New method for the resolution of fractional orders differential equations: Application to the simulation of fractional systems Article de journal Dans: International Review on Modelling and Simulations, vol. 3, no. 3, p. 265 – 271, 2010, (Cited by: 3). Résumé | Liens | BibTeX | Étiquettes: @article{Amairi2010265b, This paper presents a new numerical method for the resolution of initial value problems for fractional orders differential equations. The method is based on the generalized Taylor’s formula, it calculates the solution of the equation and overcomes the shortcoming and, in addition, it’s independent from the point in which the fractional derivative is defined. Two numerical examples are detailed to show the effectiveness of the proposed method in the simulation of a dynamic fractional order linear system described with a state space representation. © 2010 Praise Worthy Prize S.r.l.-all right reserved. |
Jemai, Wiem Jebri; Jerbi, Houssem; Abdelkrim, Mohamed Naceur Synthesis of an approximate feedback nonlinear control based on optimization methods Article de journal Dans: WSEAS Transactions on Systems and Control, vol. 5, no. 8, p. 646 – 655, 2010, (Cited by: 8). @article{Jemai2010646, |
Zaltni, D.; Ghanes, M.; Barbot, J. P.; Abdelkrim, M. N. 2010, (Cited by: 9). @conference{Zaltni20102213, |
Harabi, Rafika El; Ould-Bouamama, Belkacem; Gayed, Mohamed Kony Ben; Abdelkrim, Mohamed Naceur 2010, (Cited by: 4). @conference{ElHarabi2010, |
Challouf, A.; Abdelkrim, N.; Tellili, A.; Abdelkrim, M. N.; Aubrun, C. An adaptive fault tolerante control in interconnected systems Conférence 2010, ISBN: 9781424475346, (cited By 2). Résumé | Liens | BibTeX | Étiquettes: Adaptive control systems, Adaptive Control; Adaptive controllers; Adaptive fault-tolerant control; Control methods; Fault tolerant control; Fault-tolerant; Interconnected subsystems; Interconnected systems; Output feedback; Output feedback controller; Sensor failure; Simulation result; Unknown inputs, Control theory; Controllers; Fault tolerant computer systems; Sensors @conference{Challouf2010, This work aims at the adaptive fault tolerant control using output feedback. Fault tolerant adaptive control is developed for N-interconnected subsystems with unknown sensors failures. Such sensors failures are characterized by some unknown inputs stuck at some unknown fixed values at unknown time instants. An effective output feedback controller structure is proposed for sensors failures compensation. The FTC scheme has an additive control in the adaptive controller which has an intrinsic robustness in terms of the stability and performance of the estimation sensors failure. This work is an extension of the additive control method presented in [8] to the interconnected subsystems. Numerical and simulation results are provided to demonstrate the effectiveness of the proposed controller. |
Zaltni, D.; Abdelkrim, M. N. Synchronous motor observability study and a new robust MRAS speed observer with an improved zero-speed position estimation design for surface PMSM Article de journal Dans: WSEAS Transactions on Systems and Control, vol. 5, no. 7, p. 567-580, 2010, ISSN: 19918763, (cited By 5). Résumé | Liens | BibTeX | Étiquettes: AC motors; Adaptive systems; Estimation; Magnetic devices; Observability; Speed; Synchronous motors; System stability, Permanent magnets @article{Zaltni2010567, This paper deals with the Permanent Magnet Synchronous Motor (PMSM) observability problems and proposes a simple and effective solution to improve the rotor speed and position estimation for Surface PMSM (SPMSM). In fact, the problem of loss of observability at low frequency range is always recognized in experimental settings. Nevertheless, there are no sufficient theoretical observability analyses for the PMSM. In the literature, only the sufficient observability condition has been presented. Therefore, the current work is aimed specially to the necessary observability condition analysis. In order to improve the rotor speed and position estimation in the case of SPMSM, a special attention is given to Model Reference Adaptive System (MRAS). MRAS based techniques are one of the best methods to estimate the rotor speed and position due to its performances and straight forward stability approach. In this paper, we propose a new robust MRAS scheme based on sliding mode techniques to estimate the rotor speed of a SPMSM. Furthermore, an Estimator/Observer swapping system is designed to overcome position observability problems at zero speed which is an unobservable state point. The stability of the proposed MRAS observer is also presented and discussed. Various tests are carried out in simulation using MATLAB/SIMULINK to illustrate the obtained theoretical results. |
Chabir, K.; Sauter, D.; Al-Salami, I. M.; Abdelkrim, M. N. Two-stage Kalman filter for simultaneous fault and delay estimation in Networked Control Systems Conférence 2010, ISBN: 9781424480920, (cited By 7). Résumé | Liens | BibTeX | Étiquettes: Computational advantages; Control loop; Delay estimation; Networked control systems; Simultaneous faults; State variables; Two stage Kalman filters, Control system analysis; Control systems; Random variables, Kalman filters @conference{Chabir2010249, Networked Control Systems are becoming very popular nowadays. However, the use of networks in the control loop induces extra difficulties in diagnosis. In this paper we propose a method for estimate fault as well delay induced by the network. Inspired from the Kalman filter previously proposed by Sinopoli et al. and Hsieh et al., two solutions are presented; the augmented and the two-stage Kalman filter. Main attention is paid for the last one. The delay and the fault are integrated as a state variable. It is supposed that the delay and the fault are random variables. In addition, we provide some analytic results to demonstrate the computational advantages of two-stage Kalman filter over augmented ones. An example illustrates the obtained results is given. © 2010 IEEE. |
Jabri, Dalel; Manamanni, Noureddine; Guelton, Kevin; Abdelkrim, Mohamed-Naceur Decentralized stabilization of discrete-time large scale switched systems Conférence 2010, (Cited by: 8). @conference{Jabri20101230, |
Thabet, A.; Chniba, S.; Gaetan, D.; Boutayeb, M.; Abdelkrim, M. N. Power systems load flow & state estimation: Modified methods and evaluation of stability and speeds computing Article de journal Dans: International Review of Electrical Engineering, vol. 5, no. 3, p. 1110-1118, 2010, ISSN: 18276660, (cited By 12). Résumé | Liens | BibTeX | Étiquettes: @article{Thabet20101110, In this paper, we present a study and evaluation of modified methods of calculating the load flow and the state estimation of power systems. We present basic algorithms and its modified versions, with a comparative study and evaluation of stability analysis and the various criteria of CPU time, computing time, memory capacity and the number of iteration in order to optimize the computing speed. The study is applied on IEEE 13 and 24 buses test systems. © 2010 Praise Worthy Prize S.r.l. |
Zaltni, D.; Abdelkrim, M. N. Robust speed and position observer using H.O.S.M for sensor-less S.P.M.S.M control Conférence 2010, ISBN: 9781424475346, (cited By 2). Résumé | Liens | BibTeX | Étiquettes: AC motors; Magnetic devices; Permanent magnets; Sliding mode control; Stability, Finite-time convergence; Higher order sliding modes; Observer; Permanent magnet synchronous motor; Stability analysis, Synchronous motors @conference{Zaltni2010, This paper presents the design of a simple and effective speed and position observer for a Surface Permanent Magnet Synchronous Motor (SPMSM). The proposed observer based on Higher Order Sliding Mode (HOSM) is designed in order to ensure the robustness against disturbances and to avoid the chattering phenomenon which is inherent in standard first order sliding mode. The stability and finite time convergence of the developed observer are studied. Simulations are carried out using Matlab/Simulink to illustrate the robustness and the stability of the proposed observer. ©2010 IEEE. |
Yahia, M.; Tao, J. W.; Benzina, H.; Abdelkrim, M. N. 2010, ISBN: 9782874870163, (cited By 4). Résumé | Liens | BibTeX | Étiquettes: Computer aided analysis; Computer aided design; Microwaves; Two dimensional, Computer aided design tools; CPU time; Filter designs; Full wave analysis; Hybrid finite element methods; Hybrid method; Memory storage; Multi-modal; Multimode filters; Total response; Variational formulation; Wave finite element, Finite element method @conference{Yahia20101301, We propose a hybrid finite element method (FEM) and a modified multimodal variational formulation (MMVF) to the analysis of cascaded uniaxial complex 2D discontinuities in rectangular waveguides. The finite element method characterizes waves in the arbitrarily shaped discontinuities and the total response of the circuit is obtained by applying the modified multimodal variational formulation. The proposed hybrid method is successfully applied to the full-wave analysis of filters with great practical interest (i.e., multimode filters), thus improving CPU time and memory storage against several full-wave finite element method based computer aided design (CAD) tools. © 2010 EuMA. |
Zaltni, D.; Sbita, L.; Abdelkrim, M. N. Nonlinear speed control using adaptive sliding mode and lyapunov approaches for PMSM fed by a 3-levels NPC inverter Article de journal Dans: Journal of Electrical Systems, vol. 6, no. 3, p. 350-360, 2010, ISSN: 11125209, (cited By 2). Résumé | Liens | BibTeX | Étiquettes: Adaptive Control; Lyapunov theories; NPC inverters; PMSM; Sliding modes, Electric inverters; Lyapunov methods; Synchronous motors, Permanent magnets @article{Zaltni2010350, A robust non linear strategy for high performance Permanent Magnet Synchronous Motor (PMSM) drives fed by a 3 levels NPC inverter is proposed. The developed approach leads to the design of Lyapunov theory in order to linearize the behavior of the PMSM. High accuracy and robustness to disturbances and parameter variations is obtained by designing an adaptive variable structure control (AVSC) to achieve speed tracking objective. The stability of the closed loop is demonstrated using Lyapunov theory. Extensive simulation work leads to significant results illustrating the good performances of the overall designed scheme. © JES 2010. |
Abdelkrim, Nouceyba; Tellili, Adel; Abdelkrim, Mohamed Naceur Composite control of a delayed singularly perturbed system by using Lambert-W function Conférence 2010, (Cited by: 3). @conference{Abdelkrim2010, |
Zaltni, Dalila; Ghanes, Malek; Barbot, Jean Pierre; Abdelkrim, Mohamed Naceur Synchronous motor observability study and an improved zero-speed position estimation design Conférence 2010, (Cited by: 25; All Open Access, Green Open Access). @conference{Zaltni20105074, |
Jemai, Wiem Jebri; Jerbi, Houssem; Abdelkrim, Mohamed Naceur 2010, (Cited by: 3). @conference{Jemai2010184, |
Chabir, K.; Sauter, D.; Abdelkrim, M. N.; Gayed, M. K. B. Robust fault diagnosis of networked control systems via Kalman filtering Article de journal Dans: International Journal of Automation and Control, vol. 4, no. 3, p. 343-356, 2010, ISSN: 17407516, (cited By 9). Résumé | Liens | BibTeX | Étiquettes: Communication delays; Delays; Detection performance; Fault detection problem; Kalman-filtering; Networked-induced delays; Residual; Robust fault diagnosis, Failure analysis; Kalman filters; Networked control systems; Uncertainty analysis, Fault detection @article{Chabir2010343, The fault detection problem of a class of linear networked control systems (NCS) with communication delays will be studied in this paper. The aim of the study is to generate residual signals which, in the fault free case, are supposed to be identically zero. In practice, this condition is not satisfactory due to various factors such as measurements noise, model uncertainties, and more specifically the NCS communication induced delays. The effect of unknown networked induced delays on conventional observed residue generator is also studied in this paper. It is shown that the detection performances may be deteriorated because of the sensitivity of the residuals to the delays. The proposed approach is based on robust residual generation based on Kalman filtering. © 2010 Inderscience Enterprises Ltd. |
Zaltni, D.; Abdelkrim, M. N. 2010, ISBN: 9789604741854, (cited By 1). Résumé | Liens | BibTeX | Étiquettes: AC motors; Adaptive systems; Dynamical systems; Estimation; Magnetic devices; Permanent magnets; Rotors; Speed, Model reference adaptive system; Observability problems; Observer; Permanent Magnet Synchronous Motor; Position estimation; Rotor speed; Sliding mode; Sliding mode techniques; Speed observers; State points; Unobservable; Zero speed, Synchronous motors @conference{Zaltni2010202, Model Reference Adaptive System (MRAS) based techniques are one of the best methods to estimate the rotor speed and position due to its performances and straight forward stability approach. In this paper, we propose a new robust MRAS scheme based on sliding mode techniques to estimated the rotor speed of a Surface Permanent Magnet Synchronous Motor (SPMSM). Furthermore, an Estimator/Observer swapping system is designed to overcame position observability problems at zero speed which is an unobservable state point. The stability of the proposed observer is also discussed. Various tests are carried out in simulation to highlight the effectiveness and the robustness of the proposed rotor speed and position estimations design. |
Benzina, H.; Sakli, H.; Aguili, T.; Tao, J. W. Complex mode in rectangular waveguide filled with longitudinally magnetized ferrite slab Article de journal Dans: Progress In Electromagnetics Research M, vol. 11, p. 79 – 87, 2010, (Cited by: 3; All Open Access, Bronze Open Access). @article{Benzina201079, |
Amairi, M.; Najar, S.; Aoun, M.; Abdelkrim, M. N. Guaranteed output-error identification of fractional order model Conférence vol. 2, IEEE Computer Society, 2010, ISBN: 9781424458462, (cited By 13). Résumé | Liens | BibTeX | Étiquettes: Fractional differentiation; Fractional model; Fractional order; Fractional order models; Fractional-order systems; Global optimization techniques; Guaranteed convergence; Interval analysis; System identifications, Global optimization; Optimization, Identification (control systems) @conference{Amairi2010246, A global optimization technique for identifying an output-error fractional order model is proposed. The proposed technique use a modified version of Hansen algorithm. It is capable of estimating the fractional orders and the parameters, with guaranteed convergence. The technique is applied to identify a fractional order system in deterministic and stochastic context. © 2010 IEEE. |
Amairi, M.; Aoun, M.; Najar, S.; Abdelkrim, M. N. A constant enclosure method for validating existence and uniqueness of the solution of an initial value problem for a fractional differential equation Article de journal Dans: Applied Mathematics and Computation, vol. 217, no. 5, p. 2162 – 2168, 2010, (Cited by: 18). Résumé | Liens | BibTeX | Étiquettes: @article{Amairi20102162, This paper presents a new method for validating existence and uniqueness of the solution of an initial value problems for fractional differential equations. An algorithm selecting a stepsize and computing a priori constant enclosure of the solution is proposed. Several illustrative examples, with linear and nonlinear fractional differential equations, are given to demonstrate the effectiveness of the method. © 2010 Elsevier Inc. All rights reserved. |
Amairi, M.; Aoun, M.; Najar, S.; Abdelkrim, M. N. New method for the resolution of fractional orders differential equations: Application to the simulation of fractional systems Article de journal Dans: International Review on Modelling and Simulations, vol. 3, no. 3, p. 265-271, 2010, ISSN: 19749821, (cited By 3). Résumé | Liens | BibTeX | Étiquettes: @article{Amairi2010265, This paper presents a new numerical method for the resolution of initial value problems for fractional orders differential equations. The method is based on the generalized Taylor’s formula, it calculates the solution of the equation and overcomes the shortcoming and, in addition, it’s independent from the point in which the fractional derivative is defined. Two numerical examples are detailed to show the effectiveness of the proposed method in the simulation of a dynamic fractional order linear system described with a state space representation. © 2010 Praise Worthy Prize S.r.l.-all right reserved. |
Ouwais, Kabaou Mohamed; Chibani, Rhaimi Belgcem; Naceur, Abdelkrim Med; Mongi, Marzoug 2010, (Cited by: 1). @conference{Ouwais2010479, |
Ouwais, Kabaou Mohamed; Chibani, Rhaimi Belgacem; Naceur, Abdelkrim Mohamed; Marzoug, Mongi Radio ressource allocation for multimedia traffic over wireless channels in OFDMA downlink systems Conférence vol. 3, 2010, (Cited by: 1). @conference{Ouwais2010327, |
Mechri, Walid; Othman, Kamel Ben Probabilistic fuzzy approach for the imprecise evaluation of safety instrumented systems Article de journal Dans: International Review on Modelling and Simulations, vol. 3, no. 3, p. 388 – 400, 2010, (Cited by: 5). @article{Mechri2010388, |
Zaltni, D; Ghanes, M; Barbot, J P; Abdelkrim, M N A HOSM observer with an improved zero-speed position estimation design for surface PMSM sensor-less control Proceedings Article Dans: Proceedings of the IEEE International Conference on Control Applications, p. 2213-2218, 2010, (Cited By :7). Liens | BibTeX | Étiquettes: scopus @inproceedings{, |
Boussaid, B; Aubrun, C; Abdelkrim, N Fault adaptation based on reference governor Proceedings Article Dans: Conference on Control and Fault-Tolerant Systems, SysTol’10 – Final Program and Book of Abstracts, p. 257-262, 2010, (Cited By :7). Liens | BibTeX | Étiquettes: scopus @inproceedings{, |
Zaltni, D; Ghanes, M; Barbot, J P; Abdelkrim, M N Synchronous motor observability study and an improved zero-speed position estimation design Proceedings Article Dans: Proceedings of the IEEE Conference on Decision and Control, p. 5074-5079, 2010, (Cited By :20). Liens | BibTeX | Étiquettes: scopus @inproceedings{, |
Jabri, D; Guelton, K; Manamanni, N Decentralized Static Output Feedback control of interconnected fuzzy descriptors Proceedings Article Dans: IEEE International Symposium on Intelligent Control – Proceedings, p. 117-122, 2010, (Cited By :4). Liens | BibTeX | Étiquettes: scopus @inproceedings{, |
Jabri, D; Manamanni, N; Guelton, K; Abdelkrim, M – Decentralized stabilization of discrete-time large scale switched systems Proceedings Article Dans: 18th Mediterranean Conference on Control and Automation, MED’10 – Conference Proceedings, p. 1230-1234, 2010, (Cited By :6). Liens | BibTeX | Étiquettes: scopus @inproceedings{, |
Zaltni, D; Sbita, L; Abdelkrim, M N Nonlinear speed control using adaptive sliding mode and lyapunov approaches for PMSM fed by a 3-levels NPC inverter Article de journal Dans: Journal of Electrical Systems, vol. 6, no. 3, p. 350-360, 2010, (Cited By :2). Liens | BibTeX | Étiquettes: scopus @article{, |
Amairi, Messaoud; Najar, Slaheddine; Aoun, Mohamed; Abdelkrim, M. N. Guaranteed output-error identification of fractional order model Conférence vol. 2, 2010, (Cited by: 13). Résumé | Liens | BibTeX | Étiquettes: Fractional differentiation, Fractional model, Fractional order, Fractional order models, Fractional-order systems, Global optimization, Global optimization techniques, Guaranteed convergence, Identification (control systems), Interval analysis, Optimization, System identifications @conference{Amairi2010246b, A global optimization technique for identifying an output-error fractional order model is proposed. The proposed technique use a modified version of Hansen algorithm. It is capable of estimating the fractional orders and the parameters, with guaranteed convergence. The technique is applied to identify a fractional order system in deterministic and stochastic context. © 2010 IEEE. |
2009 |
Boussaid, B.; Aubrun, C.; Gayed, M. Koni Ben; Abdelkrim, M. Naceur FTC approach based on predictive governor Conférence 2009, ISBN: 9781424447060, (cited By 2). Résumé | Liens | BibTeX | Étiquettes: Active fault tolerant control systems; Actuator dynamics; Actuator failures; Actuator fault; Closed loop dynamic; Constraint set; Control energy; Fault tolerant control systems; Hydrothermal system; New approaches; Reconfigurable control; Reference trajectories, Actuators; Computation theory; Cost reduction; Fault tolerant computer systems; Navigation; Predictive control systems; Trajectories, Model predictive control @conference{Boussaid20092088, In this paper, a new approach of reconfigured system is proposed to improve the performance of an active fault tolerant control system. The method is based on model predictive control and reference trajectory adjustment techniques. When an actuator fault occurs in the system, the controller balances to the nearest degraded reference trajectory. A constraint set and cost function are established to avoid actuators saturation and reduce control energy spent in closed loop dynamics. The effectiveness of the proposed method has been illustrated using a hydrothermal system subject to actuator failure and constraints on the actuator dynamic ranges. Satisfactory results have been obtained. ©2009 IEEE. |
Chabir, K.; Sauter, D.; Keller, J. Y. Design of fault isolation filter under network induced delay Conférence 2009, ISBN: 9781424446025, (cited By 9). Résumé | Liens | BibTeX | Étiquettes: Communication delays; Directional properties; Fault detection problem; Fault isolation; Model uncertainties; Network-induced delays; Networked control systems; Residual signals, Control system analysis; Uncertainty analysis, Fault detection @conference{Chabir200925, The fault detection problem is studied in this paper for a class of linear Networked Control Systems (NCS) with communication delays. Aim is to generate residual signals which, in the fault free case, are supposed to be identically zero. In practice, this condition is not satisfied due to various factors such as measurements noises, model uncertainties, and in particular for NCS communication induced delays. The aim of this paper is to design a Fault Isolation Filter satisfying to directional properties and being robust against network induced delays as well. © 2009 IEEE. |
Lesecq, S.; Chabir, K.; Gentil, S.; Sauter, D. IFAC Secretariat, 2009, ISSN: 14746670, (cited By 2). Résumé | Liens | BibTeX | Étiquettes: Bandpass filters; Networked control systems, Control loop; Controlled system; Data loss; In networks; Network-controlled; Packets loss; Quad rotors, Extended Kalman filters @conference{Lesecq2009810, Network Controlled Systems are becoming very popular today. However, the use of a network in the control loop induces extra difficulties. Among these difficulties, packet losses and extra delays must be carefully considered. This paper deals with both of these problems. The first one is tackled through an Extended Kalman Filter that is insensitive to data losses. The technique proposed is derived from the Kalman Filter previously proposed by Sinopoli et al. The second difficulty is considered through another Extended Kalman Filter, the state of which is augmented with the delay. The techniques proposed are exemplified on the UAV quadrotor benchmark developed at the GIPSA-Lab. © 2009 IFAC. |
Abdelhamid, Moufida; Aoun, Mohamed; Najar, Slaheddine; Abdelhamid, Mohamed Naceur Discrete fractional Kalman filter Conférence vol. 2, no. PART 1, 2009, (Cited by: 20; All Open Access, Bronze Open Access). Résumé | Liens | BibTeX | Étiquettes: Algorithms, Discrete time control systems, Discrete-time Kalman filters, Fractional differentiation, Fractional Kalman filter, Fractional kalman filters, Fractional systems, Intelligent control, Kalman filters, Linear state estimation, Numerical example, Signal processing, State estimation @conference{Abdelhamid2009b, This paper presents a generalization of the classical discrete time Kalman filter algorithm to the case of the fractional systems. Motivations for the use of this filter are given and the algorithm is detailed. The document also shows a simple numerical example of linear state estimation. Copyright © 2007 International Federation of Automatic Control. |
Elhsoumi, Aicha; Harabi, Rafika El; Naoui, Saloua Bel Hadj Ali; Abdelkrim, Mohamed Naceur Luenberger observer based sensor and actuator fault detection for chemical reactor Conférence vol. 2, no. PART 1, 2009, (Cited by: 2). @conference{Elhsoumi2009, |
Jemai, Wiem Jebri; Jerbi, Houssem; Abdelkrim, Mohamed Naceur On the synthesis of a novel nonlinear feedback control for nonlinear input-affine systems Conférence 2009, (Cited by: 3). @conference{Jemai2009226, |
Metoui, B.; Melchior, P.; Najar, S.; Abdelkrim, M. N.; Oustaloup, A. Robust path planning for dynamic environment based on fractional attractive force Conférence IEEE Computer Society, 2009, ISBN: 9781424443468, (cited By 10). Résumé | Liens | BibTeX | Étiquettes: Attractive force; Curvature continuities; Dynamic environments; Fractional potential; Path-tracking design; Repulsive potentials; Robust path planning; Robustness studies, Mobile robots; Robot programming; Robotics, Motion planning @conference{Metoui2009, In path planning, potential fields introduce force constraints to ensure curvature continuity of trajectories and thus to facilitate path-tracking design. In previous works, a path planning design by fractional (or generalized) repulsive potential has been developed to avoid fixed obstacles: danger level of each obstacle was characterized by the fractional order of differentiation, and a fractional road was determined by taking into account danger of each obstacle. If the obstacles are dynamic, the method was extended to obtain trajectories by considering repulsive and attractive potentials taking into account position and velocity of the robot with respect to obstacles. Then, a new attractive force based on fractional potential was developed. The advantage of the generalized normalized force is the possibility to control its variation. The curve is continuously varying and depends only on one parameter, the non integer order of the generalized attractive potential. But, in case of robot parameter variations, these two previous attractive forces do not allow to obtain robust path planning. A new fractional attractive force for robust path planning of mobile robot in dynamic environment was developed. In this paper, the robustness study in dynamic environment is presented. This method allows to obtain robust path planning despite robot mass variations. ©2009 IEEE. |
Harabi, R. El; Bouamama, B. Ould; Gayed, M. K. Ben; Abdelkrim, M. N. FDI of chemical process using Bond Graph tool Conférence vol. 14, no. PART 1, IFAC Secretariat, 2009, ISSN: 14746670, (cited By 1). Résumé | Liens | BibTeX | Étiquettes: Analytical redundancy relations; Bond graph model; Continuous stirred tank reactor; Diagnosis strategies; Equipment failures; Heat and mass transports; In-process parameters; Secondary reactions, Chemical analysis, Chemical industry; Chemical reactions; Chemical reactors; Graph algorithms; Graph theory; Indicators (chemical); Reaction kinetics; Tanks (containers) @conference{ElHarabi2009198, In the chemical industry, faults can occur due to sensors failures, equipment failures or changes in process parameters. This paper presents a diagnosis methodology relying on a Bond Graph approach to detect kinetic and thermodynamic drift of chemical reactors due to appearance of secondary reaction. The Bond Graph model, used for supervision, incorporates the chemical kinetics of equilibrated reaction, heat and mass transport phenomena. Furthermore the causal and structural properties of the Bond Graph tool can be used to design FDI algorithms (i.e. the generation of fault indicators) to determine the availability of the chemical process. Structural analysis of the model is utilized to obtain the fault signatures for fault isolation. The diagnosis strategy is illustrated via a Continuous Stirred Tank Reactor (CSTR) example. |
Zouinkhi, A.; Bajic, E.; Zidi, R.; Gayed, M. B.; Rondeau, E.; Abdelkrim, M. N. Petri nets modelling of active products cooperation for active security management Conférence IEEE Computer Society, 2009, ISBN: 9781424443468, (cited By 9). Résumé | Liens | BibTeX | Étiquettes: Active product; Active securities; Chemical storage sector; Cooperation; Cooperation mechanism; Environmental security; Human operator models; Security, Petri nets, Sensor networks @conference{Zouinkhi20091513, This article presents an approach of modeling by Petri Nets of the cooperation between active products that are equipped with sensor networks devices providing ambient communication and sensing capabilities. Such active products are able to control the environmental security level in ambient intelligence context of a hazardous susbstances warehouse. The proposed concept of active products is supported by a model that allow the objects to interact each other in an autonomous, real time, transparent and intelligent way, without any human help. We introduce the term of active security in the industrial chemical storage sector, taken in charge directly by the active product subjugated by a constrained security level. Petri Net modeling activity is conducted with the CPN-Tools software. We propose an Active product model and a human operator model and the associated cooperation mechanisms using ambient communication messaging. ©2009 IEEE. |
Zaltni, D.; Abdelkrim, M. N.; Ghanes, M.; Barbot, J. P. Observability analysis of PMSM Conférence 2009, ISBN: 9781424443987, (cited By 25). Résumé | Liens | BibTeX | Étiquettes: AC motors; Mathematical techniques; Observability; Permanent magnets, Condition analysis; Low speed; Observability analysis; Observer performance; Operating condition; Permanent Magnet Synchronous Motor; Rotor position; Sensor less control; Sensorless; Sufficient conditions, Synchronous motors @conference{Zaltni2009, The current problems to successfully apply sensorless control techniques for Permanent Magnet Synchronous Motor (PMSM) are the existence of operating conditions for which the observer performance is remarkably deteriorated. This is due to difficulties in estimating correctly the rotor position at low speed. The failure of sensor-less schemes in some particular operating conditions has been always recognized in experimental settings. However, there are no sufficient theoretical observability analysis for the PMSM. In the literature, only the sufficient observability condition has been presented. Therefore, the current work is aimed specially to necessary observability condition analysis. Thus, we give here the necessary and sufficient states observability condition for the PMSM. An example is presented to illustrate the results. © 2009 IEEE. |
Jabri, Dalel; Guelton, Kevin; Manamanni, Noureddine; Abdelkrim, Mohamed N. Fuzzy Lyapunov decentralized control of Takagi-Sugeno interconnected descriptors Conférence 2009, (Cited by: 6). @conference{Jabri200934, |
Hsoumi, Aicha; Harabi, Rafika El; Ali, Saloua Bel Hadj; Abdelkrim, Mohamed Naceur Diagnosis of a continuous stirred tank reactor using Kalman filter Conférence 2009, (Cited by: 9). @conference{Hsoumi2009153, |
Publications
2011 |
Nonlinear state feedback design for continuous polynomial systems Article de journal Dans: International Journal of Control, Automation and Systems, vol. 9, no. 3, p. 566-573, 2011, (Cited By :6). |
Set-point reconfiguration approach for the FTC of wind turbines Proceedings Article Dans: IFAC Proceedings Volumes (IFAC-PapersOnline), p. 12395-12400, 2011, (Cited By :9). |
2011, (Cited by: 3). |
2010 |
Composite control of a delayed singularly perturbed system by using Lambert-W function Proceedings Article Dans: 2010 7th International Multi- Conference on Systems, Signals and Devices, p. 1-4, 2010. |
AN adaptive fault tolerante control in interconnected systems Proceedings Article Dans: 2010 7th International Multi- Conference on Systems, Signals and Devices, p. 1-6, 2010. |
A constant enclosure method for validating existence and uniqueness of the solution of an initial value problem for a fractional differential equation Article de journal Dans: Applied Mathematics and Computation, vol. 217, no. 5, p. 2162 – 2168, 2010, (Cited by: 18). |
Adaptive thresholding for fault detection in networked control systems Conférence 2010, ISBN: 9781424453627, (cited By 4). |
New method for the resolution of fractional orders differential equations: Application to the simulation of fractional systems Article de journal Dans: International Review on Modelling and Simulations, vol. 3, no. 3, p. 265 – 271, 2010, (Cited by: 3). |
Synthesis of an approximate feedback nonlinear control based on optimization methods Article de journal Dans: WSEAS Transactions on Systems and Control, vol. 5, no. 8, p. 646 – 655, 2010, (Cited by: 8). |
2010, (Cited by: 9). |
2010, (Cited by: 4). |
An adaptive fault tolerante control in interconnected systems Conférence 2010, ISBN: 9781424475346, (cited By 2). |
Synchronous motor observability study and a new robust MRAS speed observer with an improved zero-speed position estimation design for surface PMSM Article de journal Dans: WSEAS Transactions on Systems and Control, vol. 5, no. 7, p. 567-580, 2010, ISSN: 19918763, (cited By 5). |
Two-stage Kalman filter for simultaneous fault and delay estimation in Networked Control Systems Conférence 2010, ISBN: 9781424480920, (cited By 7). |
Decentralized stabilization of discrete-time large scale switched systems Conférence 2010, (Cited by: 8). |
Power systems load flow & state estimation: Modified methods and evaluation of stability and speeds computing Article de journal Dans: International Review of Electrical Engineering, vol. 5, no. 3, p. 1110-1118, 2010, ISSN: 18276660, (cited By 12). |
Robust speed and position observer using H.O.S.M for sensor-less S.P.M.S.M control Conférence 2010, ISBN: 9781424475346, (cited By 2). |
2010, ISBN: 9782874870163, (cited By 4). |
Nonlinear speed control using adaptive sliding mode and lyapunov approaches for PMSM fed by a 3-levels NPC inverter Article de journal Dans: Journal of Electrical Systems, vol. 6, no. 3, p. 350-360, 2010, ISSN: 11125209, (cited By 2). |
Composite control of a delayed singularly perturbed system by using Lambert-W function Conférence 2010, (Cited by: 3). |
Synchronous motor observability study and an improved zero-speed position estimation design Conférence 2010, (Cited by: 25; All Open Access, Green Open Access). |
2010, (Cited by: 3). |
Robust fault diagnosis of networked control systems via Kalman filtering Article de journal Dans: International Journal of Automation and Control, vol. 4, no. 3, p. 343-356, 2010, ISSN: 17407516, (cited By 9). |
2010, ISBN: 9789604741854, (cited By 1). |
Complex mode in rectangular waveguide filled with longitudinally magnetized ferrite slab Article de journal Dans: Progress In Electromagnetics Research M, vol. 11, p. 79 – 87, 2010, (Cited by: 3; All Open Access, Bronze Open Access). |
Guaranteed output-error identification of fractional order model Conférence vol. 2, IEEE Computer Society, 2010, ISBN: 9781424458462, (cited By 13). |
A constant enclosure method for validating existence and uniqueness of the solution of an initial value problem for a fractional differential equation Article de journal Dans: Applied Mathematics and Computation, vol. 217, no. 5, p. 2162 – 2168, 2010, (Cited by: 18). |
New method for the resolution of fractional orders differential equations: Application to the simulation of fractional systems Article de journal Dans: International Review on Modelling and Simulations, vol. 3, no. 3, p. 265-271, 2010, ISSN: 19749821, (cited By 3). |
2010, (Cited by: 1). |
Radio ressource allocation for multimedia traffic over wireless channels in OFDMA downlink systems Conférence vol. 3, 2010, (Cited by: 1). |
Probabilistic fuzzy approach for the imprecise evaluation of safety instrumented systems Article de journal Dans: International Review on Modelling and Simulations, vol. 3, no. 3, p. 388 – 400, 2010, (Cited by: 5). |
A HOSM observer with an improved zero-speed position estimation design for surface PMSM sensor-less control Proceedings Article Dans: Proceedings of the IEEE International Conference on Control Applications, p. 2213-2218, 2010, (Cited By :7). |
Fault adaptation based on reference governor Proceedings Article Dans: Conference on Control and Fault-Tolerant Systems, SysTol’10 – Final Program and Book of Abstracts, p. 257-262, 2010, (Cited By :7). |
Synchronous motor observability study and an improved zero-speed position estimation design Proceedings Article Dans: Proceedings of the IEEE Conference on Decision and Control, p. 5074-5079, 2010, (Cited By :20). |
Decentralized Static Output Feedback control of interconnected fuzzy descriptors Proceedings Article Dans: IEEE International Symposium on Intelligent Control – Proceedings, p. 117-122, 2010, (Cited By :4). |
Decentralized stabilization of discrete-time large scale switched systems Proceedings Article Dans: 18th Mediterranean Conference on Control and Automation, MED’10 – Conference Proceedings, p. 1230-1234, 2010, (Cited By :6). |
Nonlinear speed control using adaptive sliding mode and lyapunov approaches for PMSM fed by a 3-levels NPC inverter Article de journal Dans: Journal of Electrical Systems, vol. 6, no. 3, p. 350-360, 2010, (Cited By :2). |
Guaranteed output-error identification of fractional order model Conférence vol. 2, 2010, (Cited by: 13). |
2009 |
FTC approach based on predictive governor Conférence 2009, ISBN: 9781424447060, (cited By 2). |
Design of fault isolation filter under network induced delay Conférence 2009, ISBN: 9781424446025, (cited By 9). |
IFAC Secretariat, 2009, ISSN: 14746670, (cited By 2). |
Discrete fractional Kalman filter Conférence vol. 2, no. PART 1, 2009, (Cited by: 20; All Open Access, Bronze Open Access). |
Luenberger observer based sensor and actuator fault detection for chemical reactor Conférence vol. 2, no. PART 1, 2009, (Cited by: 2). |
On the synthesis of a novel nonlinear feedback control for nonlinear input-affine systems Conférence 2009, (Cited by: 3). |
Robust path planning for dynamic environment based on fractional attractive force Conférence IEEE Computer Society, 2009, ISBN: 9781424443468, (cited By 10). |
FDI of chemical process using Bond Graph tool Conférence vol. 14, no. PART 1, IFAC Secretariat, 2009, ISSN: 14746670, (cited By 1). |
Petri nets modelling of active products cooperation for active security management Conférence IEEE Computer Society, 2009, ISBN: 9781424443468, (cited By 9). |
Observability analysis of PMSM Conférence 2009, ISBN: 9781424443987, (cited By 25). |
Fuzzy Lyapunov decentralized control of Takagi-Sugeno interconnected descriptors Conférence 2009, (Cited by: 6). |
Diagnosis of a continuous stirred tank reactor using Kalman filter Conférence 2009, (Cited by: 9). |