2009 |
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, |
Yahia, M.; Tao, J. W.; Benzina, H.; Abdelkrim, M. N. Analysis of complex rectangular waveguide discontinuities using hybrid MVM-FEM Conférence 2009, ISBN: 9781424428021, (cited By 5). Résumé | Liens | BibTeX | Étiquettes: Commercial software; Computer aided design tools; CPU time; Finite element analysis; Full wave analysis; Hybrid approach; Memory storage; Multi-modal; Multimodal variational method (MVM); Passive microwaves; Variational methods, Computer aided design; Microwave devices; Microwaves; Ordinary differential equations; Rectangular waveguides, Finite element method @conference{Yahia2009111, A novel computer-aided design (CAD) tool of complex passive microwave devices in rectangular waveguide technology is suggested. The multimodal variational method is applied to the full-wave description in the rectangular waveguides while the finite element analysis characterizes waves in the arbitrarily shaped discontinuities. The put forward hybrid approach is successfully applied to the full-wave analysis of complex irises CAD, thus improving CPU time and memory storage against several FEM-based commercial softwares. ©2009 IEEE. |
Bensalem, Y.; Abdelkrim, M. N. A sensorless neural model reference adaptive control for induction motor drives Conférence 2009, ISBN: 9781424443987, (cited By 6). Résumé | Liens | BibTeX | Étiquettes: Adaptive control systems; Adaptive systems; Computer control systems; Computer simulation; Controllers; Electric drives; Fuzzy logic; Fuzzy neural networks; Fuzzy systems; Induction motors; Speed, Model reference adaptive control @conference{Bensalem2009, In this paper, a high performance speed control approach using artificial neural networks (ANNs) and Fuzzy Logic for the Field Oriented induction motor (IM) is proposed. This control method is developed using model reference adaptive control (MRAC) to improve the performance of the IM speed. By using an adaptive neural network controller (ANNC) in the MRAC method, the speed of an IM can be controlled to follow an arbitrarily selected speed trajectory. In particular, an accurate tracking of the speed can still be obtained when uncertainties in the motor and its load exists. The Fuzzy logic is used for the neural controller adaptation to improve the robustness of the generated command. In the proposed control scheme, the Model Reference Adaptive System (MRAS) is used to estimate the rotor speed and the rotor time constant parameter variation. The algorithm is verified by a series of computer simulations and the obtained results show that the designed control system can achieve satisfactory performances in the tracking to the speed trajectory and to the adaptability of the rotor time constant variation. © 2009 IEEE. |
Yahiia, M.; Tao, J. W.; Benzina, H.; Abdelkrim, M. N. Electromagnetic modeling of complex uniaxial waveguide discontinuities using a modified MVM Conférence 2009, ISBN: 9781424427208, (cited By 0). Résumé | Liens | BibTeX | Étiquettes: Antennas, Basis functions; Electromagnetic modeling; First order; Full wave analysis; HFSS simulation; Modal basis; Multi-modal; Uniaxial waveguides; Variational methods, Computer aided analysis; Computer aided design @conference{Yahiia2009153, In this paper, we extend the use of the Multimodal Variational Method (MVM) to complex discontinuities. Classical MVM can’t be applied to characterize complex discontinuities because the modal basis of such complex discontinuities is very difficult to find. To surmount this deficiency, we divide the complex aperture into elements where the electromagnetic (EM) wave can be easily expanded into first order basis functions. Then, we assemble all basis functions to get the complete basis in the entire complex discontinuity. The modified MVM is applied to full-wave analysis of the computer aided design of complex irises. The results are validated with the HFSS simulations, the theoretical Marcuvitz and the experimental results. © 2009 IEEE. |
Yahia, M.; Tao, J. W.; Benzina, H.; Abdelkrim, M. N. Modified simplex method applied to narrow bandwidth ridged waveguide filter optimization Conférence 2009, ISBN: 9781424446643, (cited By 1). Résumé | Liens | BibTeX | Étiquettes: Bandwidth; Circular waveguides; Microwaves; Poles, Filter optimization; High performance filter; Modified simplex methods; Narrow bandwidth; Optimization method; Optimization tools; Powell’s method; Relative bandwidth; Ridged waveguides; Simplex methods, Optimization @conference{Yahia2009, Traditional optimization methods, such as Powell’s method and the Simplex Method (SM), are very difficult to the design of high performance filters in narrow relative bandwidth (BW). To improve the efficiency of the SM, we introduce a new optimization tool which is successfully applied to narrower bandwidth of four pole and six pole rectangular ridged waveguide filters. ©2009 IEEE. |
Melchior, Pierre; Metoui, Brahim; Najar, Slaheddine; Abdelkrim, Mohamed Naceur; Oustaloup, Alain Robust path planning for mobile robot based on fractional attractive force Conférence 2009, (Cited by: 11). @conference{Melchior20091424, |
Sakli, H.; Benzina, H.; Aguili, T.; Tao, J. W. Ferrite image lines studies by transverse operator method Conférence vol. 2, 2009, (Cited by: 1). @conference{Sakli20091442, |
Sakli, Hedi; Benzina, Hafed; Aguili, Taoufik; Tao, Jun Wu Dispersion in the microwave planar dispositif with ferrite Conférence 2009, (Cited by: 0). @conference{Sakli2009, |
Sakli, H.; Benzina, H.; Aguili, T.; Tao, J. W. A Rigorous Study of Some Planar Structures With Longitudinally Magnetized Ferrite by a Modified LSBR Method Article de journal Dans: International Journal of Microwave and Optical Technology, vol. 4, no. 6, p. 358-367, 2009, ISSN: 15530396, (cited By 1). Résumé | Liens | BibTeX | Étiquettes: @article{Sakli2009358, In this paper, we propose a variant of the least squares boundary residual (LSBR) method which takes into account the singularities of the electromagnetic field in the metal-dielectric edge due to the existence of the Gibbs phenomenon. A Systematic weight functions are employed in this method permitting to obtain accurate and efficient numerical results with an accelerated convergence. We present the extension of the modified LSBR method to the study of the dispersion of the planar structures partially full of ferrite longitudinally magnetized by a static magnetic field H 0, containing conductors of negligible thickness in the interfaces. We modelise the strutures of the microstrip and finlines by a proposed general configuration. © 2009 ISRAMT |
Sakli, H.; Benzina, H.; Aguili, T.; Tao, J. W. Propagation constant of a rectangular waveguides completely full of ferrite magnetized longitudinally Article de journal Dans: Journal of Infrared, Millimeter, and Terahertz Waves, vol. 30, no. 8, p. 877-883, 2009, ISSN: 18666892, (cited By 7). Résumé | Liens | BibTeX | Étiquettes: Anisotropic waveguides; Efficient analysis; Eigenvalue equations; Fast convergence; Longitudinally magnetized ferrite; Numerical example; Propagation constant; Transverse operator method, Dispersion (waves); Eigenvalues and eigenfunctions; Ferrite; Mathematical operators; Rectangular waveguides, Galerkin methods @article{Sakli2009877, This paper is an analysis of rectangular waveguide completely full of ferrite magnetized longitudinally. The analysis is based on the formulation of the transverse operator method (TOM), followed by the application of the Galerkin method. We obtain an eigenvalue equation system. The propagation constant of some homogenous and anisotropic waveguide structures with ferrite has been obtained. The results presented here show that the transverse operator formulation is not only an elegant theoretical form, but also a powerful and efficient analysis method, it is useful to solve a number of the propagation problems in electromagnetic. One advantage of this method is that it presents a fast convergence. Numerical examples are given for different cases and compared with the published results. A good agreement is obtained. © 2009 Springer Science+Business Media, LLC. |
Chibani, R.; Chtourou, M. IMC based automatic tuning method of PID controllers using neural networks Conférence 2009, (Cited by: 1). @conference{Chibani2009, |
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. |
2008 |
Bensalem, Y.; Sbita, L.; Abdelkrim, M. N. Neural and fuzzy adaptive control of induction motor drives Conférence vol. 1019, 2008, (Cited by: 0). @conference{Bensalem2008221, |
Kabaou, Mohamed Ouwais; Chibani, Belgacem Rhaimi; Abdelkrim, Mohamed Naceur Path loss models comparison in radio mobile communications Article de journal Dans: International Journal of Soft Computing, vol. 3, no. 2, p. 88 – 92, 2008, (Cited by: 4). @article{Kabaou200888, |
Melchior, Pierre; Poty, Alexandre; Oustaloup, Alain; Metoui, Brahim; Najar, Slaheddine; Abdelkrim, Mohamed Naceur Attractive force based on fractional potential in dynamic motion planning for mobile robot Conférence vol. 5 PART B, 2008, (Cited by: 8). Liens | BibTeX | Étiquettes: Dynamics @conference{Melchior20081423, |
Sakli, H.; Benzina, H.; Aguili, T.; Tao, J. W. A Rigorous Study of Complex Modes by Applying the Transverse Operator in a Rectangular Guide of Ferrites Article de journal Dans: International Journal of Microwave and Optical Technology, vol. 3, no. 5, p. 535-540, 2008, ISSN: 15530396, (cited By 3). Résumé | Liens | BibTeX | Étiquettes: @article{Sakli2008535, In hyper-frequencies, the ferrites are characterized by a tonsorial permeability which represents their inducted anisotropy under a magnetic field. This specific property makes the good formulation of the « Maxwell equation » harder. In this paper, a rigorous study of the formulation of the transverse operation method (TOM) is presented by a homogeneous rectangular structure of ferrites with transverse anisotropy which will be followed by the application of the Galerkin Method. Our study essentially focuses on the determination of the propagation constants and the electromagnetic fields in a rectangular wave-guide of ferrites magnetized longitudinally by a static magnetic field. Hence, we’ll show the existence of complex modes in the ferrite structure. © 2008 ISRAMT. All Rights Reserved. |
Chabir, K.; Sauter, D.; Gayed, M. K. Ben; Abdelkrim, M. Naceur Design of an adaptive Kalman filter for fault detection of networked control systems Conférence 2008, ISBN: 9781424425051, (cited By 31). Résumé | Liens | BibTeX | Étiquettes: Active areas; Adaptive Kalman filtering; Communication delays; Control and automation; Fault detection problem; Model uncertainties; Networked control systems; New approaches; Residual signals; Robust fault diagnosis, Control systems @conference{Chabir20081124, Networked control systems (NCS) are an active area of research within control and estimation. Networked control systems have many advantages by comparison with the traditional ones. 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, disturbances and also for NCS, induced delays and data dropouts. In this paper, a new approach for robust fault diagnosis is presented. The method is based on the use of an adaptive Kalman filter designed in order to minimize the effect of the network. © 2008 IEEE. |
2007 |
Aoun, M.; Malti, R.; Levron, F.; Oustaloup, A. Synthesis of fractional Laguerre basis for system approximation Article de journal Dans: Automatica, vol. 43, no. 9, p. 1640-1648, 2007, ISSN: 00051098, (cited By 119). Résumé | Liens | BibTeX | Étiquettes: Approximation theory; Asymptotic stability; Integer programming; Mathematical models, Fractional differentiation; Laguerre function; Orthonormal basis, Identification (control systems) @article{Aoun20071640, Fractional differentiation systems are characterized by the presence of non-exponential aperiodic multimodes. Although rational orthogonal bases can be used to model any L2 [0, ∞ [ system, they fail to quickly capture the aperiodic multimode behavior with a limited number of terms. Hence, fractional orthogonal bases are expected to better approximate fractional models with fewer parameters. Intuitive reasoning could lead to simply extending the differentiation order of existing bases from integer to any positive real number. However, classical Laguerre, and by extension Kautz and generalized orthogonal basis functions, are divergent as soon as their differentiation order is non-integer. In this paper, the first fractional orthogonal basis is synthesized, extrapolating the definition of Laguerre functions to any fractional order derivative. Completeness of the new basis is demonstrated. Hence, a new class of fixed denominator models is provided for fractional system approximation and identification. © 2007 Elsevier Ltd. All rights reserved. |
Aoun, M.; Malti, R.; Levron, F.; Oustaloup, A. Synthesis of fractional Laguerre basis for system approximation Article de journal Dans: Automatica, vol. 43, no. 9, p. 1640 – 1648, 2007, (Cited by: 115; All Open Access, Green Open Access). Résumé | Liens | BibTeX | Étiquettes: Approximation theory, Asymptotic stability, Fractional differentiation, Identification (control systems), Integer programming, Laguerre function, Mathematical models, Orthonormal basis @article{Aoun20071640b, Fractional differentiation systems are characterized by the presence of non-exponential aperiodic multimodes. Although rational orthogonal bases can be used to model any L2 [0, ∞ [ system, they fail to quickly capture the aperiodic multimode behavior with a limited number of terms. Hence, fractional orthogonal bases are expected to better approximate fractional models with fewer parameters. Intuitive reasoning could lead to simply extending the differentiation order of existing bases from integer to any positive real number. However, classical Laguerre, and by extension Kautz and generalized orthogonal basis functions, are divergent as soon as their differentiation order is non-integer. In this paper, the first fractional orthogonal basis is synthesized, extrapolating the definition of Laguerre functions to any fractional order derivative. Completeness of the new basis is demonstrated. Hence, a new class of fixed denominator models is provided for fractional system approximation and identification. © 2007 Elsevier Ltd. All rights reserved. |
Tellili, A.; Abdelkrim, M. N.; Benrejeb, M. Reliable H∞ control of multiple time scales singularly perturbed systems with sensor failure Article de journal Dans: International Journal of Control, vol. 80, no. 5, p. 659-665, 2007, ISSN: 00207179, (cited By 27). Résumé | Liens | BibTeX | Étiquettes: Asymptotic stability; Control system analysis; Linear algebra; Perturbation techniques; Riccati equations; Sensors, Full order systems; Sensor failure; Subsystems; Time scale decomposition, Linear control systems @article{Tellili2007659, This paper studies the reliable H control for linear time-invariant multiparameter singularly perturbed systems against sensor failures. By time-scale decomposition, the full-order system is decomposed into slow and fast subsystems. After designing a reliable H controller for the global system, three reduced reliable H sub-controllers based on the slow and fast problems are obtained through the manipulation of the algebraic Riccati equations. The resulting control systems are reliable in that they provide guaranteed asymptotic stability and H performance when all control components are operational as well as when sensor failures occur. |
2006 |
Sabatier, Jocelyn; Aoun, Mohamed; Oustaloup, Alain; Grégoire, Gilles; Ragot, Franck; Roy, Patrick Fractional system identification for lead acid battery state of charge estimation Article de journal Dans: Signal Processing, vol. 86, no. 10, p. 2645 – 2657, 2006, (Cited by: 269). Résumé | Liens | BibTeX | Étiquettes: Fractional order dynamical systems, Fractional system identification method, Identification (control systems), Lead acid batteries, Mathematical models, Parameter estimation, State of charge estimation, Thermal effects @article{Sabatier20062645, This paper deals with the application of fractional system identification to lead acid battery state of charge estimation. Fractional behavior of lead acid batteries is justified. A fractional system identification method recently developed is presented and a new fractional model of the battery is proposed. Based on parameter variations of this model, a state of charge estimation method is presented. Validation tests of this method on unknown state of charge are carried out. These validation tests highlights that the proposed estimation method gives a state of charge estimation with an error close to 5% whatever the operating temperature. © 2006 Elsevier B.V. All rights reserved. |
Sabatier, Jocelyn; Aoun, Mohamed; Oustaloup, Alain; Grégoire, Gilles; Ragot, Franck; Roy, Patrick Estimation of lead acid battery state of charge with a novel fractional model Conférence vol. 2, no. PART 1, 2006, (Cited by: 6; All Open Access, Bronze Open Access). Résumé | Liens | BibTeX | Étiquettes: Application programs, Battery management systems, Charging (batteries), Estimation methods, Fractional behavior, Fractional model, Fractional systems, Identification (control systems), Lead acid batteries, Operating temperature, Religious buildings, State-of-charge estimation, Unknown state, Validation test @conference{Sabatier2006296, This paper deals with the application of fractional system identification to lead acid battery state of charge estimation. Fractional behavior of lead acid batteries is justified. A fractional system identification method recently developed is presented and a new fractional model of the battery is proposed. Based on parameter variations of this model, a state of charge estimation method is presented. Validation tests of this method on unknown state of charge are carried out. These validation tests highlights that the proposed estimation method gives a state of charge estimation with an error less than 5% whatever the operating temperature. |
Sabatier, Jocelyn; Aoun, Mohamed; Oustaloup, Alain; Grégoire, Gilles; Ragot, Franck; Roy, Patrick Fractional system identification for lead acid battery state of charge estimation Article de journal Dans: Signal Processing, vol. 86, no. 10, p. 2645 – 2657, 2006, (Cited by: 269). Résumé | Liens | BibTeX | Étiquettes: Fractional order dynamical systems, Fractional system identification method, Identification (control systems), Lead acid batteries, Mathematical models, Parameter estimation, State of charge estimation, Thermal effects @article{Sabatier20062645b, This paper deals with the application of fractional system identification to lead acid battery state of charge estimation. Fractional behavior of lead acid batteries is justified. A fractional system identification method recently developed is presented and a new fractional model of the battery is proposed. Based on parameter variations of this model, a state of charge estimation method is presented. Validation tests of this method on unknown state of charge are carried out. These validation tests highlights that the proposed estimation method gives a state of charge estimation with an error close to 5% whatever the operating temperature. © 2006 Elsevier B.V. All rights reserved. |
Sabatier, Jocelyn; Aoun, Mohamed; Oustaloup, Alain; Grégoire, Gilles; Ragot, Franck; Roy, Patrick Estimation of lead acid battery state of charge with a novel fractional model Conférence vol. 2, no. PART 1, 2006, (Cited by: 6; All Open Access, Bronze Open Access). Résumé | Liens | BibTeX | Étiquettes: Application programs, Battery management systems, Charging (batteries), Estimation methods, Fractional behavior, Fractional model, Fractional systems, Identification (control systems), Lead acid batteries, Operating temperature, Religious buildings, State-of-charge estimation, Unknown state, Validation test @conference{Sabatier2006296b, This paper deals with the application of fractional system identification to lead acid battery state of charge estimation. Fractional behavior of lead acid batteries is justified. A fractional system identification method recently developed is presented and a new fractional model of the battery is proposed. Based on parameter variations of this model, a state of charge estimation method is presented. Validation tests of this method on unknown state of charge are carried out. These validation tests highlights that the proposed estimation method gives a state of charge estimation with an error less than 5% whatever the operating temperature. |
Tellili, A.; Abdelkrim, M. N.; Benrejeb, M. On the fault diagnosis of uncertain singularly perturbed systems Article de journal Dans: Proceedings of the Institution of Mechanical Engineers. Part I: Journal of Systems and Control Engineering, vol. 220, no. 6, p. 509-516, 2006, ISSN: 09596518, (cited By 5). Résumé | Liens | BibTeX | Étiquettes: Fault detection, Multimodelling structure; Parameter uncertainty; Parity space; Singularly perturbed systems; Slow subsystem, Perturbation techniques; Uncertain systems; Uncertainty analysis @article{Tellili2006509, This work aims at the fault diagnosis of two-timescale, singularly perturbed systems (SPSs) and SPSs with a multimodelling structure. The approach of model-based fault detection and isolation using the dynamic parity space to generate singular perturbation parameter free residuals was used. A comparative study of diagnosis of the SPS is carried out considering, in the first case, the SPS as an uncertain system with parameter uncertainties and using, in the second case, the slow subsystem for fault detection and isolation. The results are applied to a power system. © IMechE 2006. |
2005 |
Aoun, Mohamed; Malti, Rachid; Oustaloup, Alain Synthesis and simulation of fractional orthonormal bases Conférence vol. 16, 2005, (Cited by: 1; All Open Access, Green Open Access). Résumé | Liens | BibTeX | Étiquettes: Calculations, Dynamical systems, Fractional calculus, Fractional derivatives, Fractional systems, Identification (control systems), Multimodes, Orthogonal basis, Orthogonal functions, Orthonormal basis, Rational orthogonal basis, simulation @conference{Aoun2005321, Although rational orthogonal bases can be used to model any L2[0,∞[ system, they fail to capture the aperiodic multi-mode behaviour of fractional systems in a limited number of terms. The classical definition of orthogonal Laguerre, Kautz, and GOB functions has been extended for the use of fractional derivatives. An appropriate diagram is thus proposed for simulation. Copyright © 2005 IFAC. |
Aoun, Mohamed; Malti, Rachid; Oustaloup, Alain Synthesis and simulation of fractional orthonormal bases Conférence vol. 16, 2005, (Cited by: 1; All Open Access, Green Open Access). Résumé | Liens | BibTeX | Étiquettes: Calculations, Dynamical systems, Fractional calculus, Fractional derivatives, Fractional systems, Identification (control systems), Multimodes, Orthogonal basis, Orthogonal functions, Orthonormal basis, Rational orthogonal basis, simulation @conference{Aoun2005321b, Although rational orthogonal bases can be used to model any L2[0,∞[ system, they fail to capture the aperiodic multi-mode behaviour of fractional systems in a limited number of terms. The classical definition of orthogonal Laguerre, Kautz, and GOB functions has been extended for the use of fractional derivatives. An appropriate diagram is thus proposed for simulation. Copyright © 2005 IFAC. |
Chibani, R.; Chtourou, M. PID neural tuning for integrating processes Conférence 2005, (Cited by: 0). @conference{Chibani200595, |
2004 |
Tellili, A.; Abdelkrim, M. N. Reliable H/sub /spl infin// controller design for singularly perturbed systems with sensor failure Proceedings Article Dans: 2004 IEEE International Conference on Industrial Technology, 2004. IEEE ICIT ’04., p. 1636-1641 Vol. 3, 2004. Résumé | Liens | BibTeX | Étiquettes: Control systems;Sensor systems;Noise measurement;Equations;Time measurement;Q measurement @inproceedings{1490813, This paper studies the reliable H/sub /spl infin// control for linear time-invariant singularly perturbed systems against sensor failures. By time-scale decomposition, the full-order system is decomposed into slow and fast subsystems. After designing a reliable H/sub /spl infin// controller for the global system, two reduced reliable H/sub /spl infin// sub-controllers based on the slow and fast problems are obtained through the manipulation of the algebraic Riccati equations. The resulting control systems are reliable in that they provide guaranteed asymptotic stability and H/sub /spl infin// performance when all control components are operational as well as when sensor failures occur. |
Tellili, A.; Abdelkrim, M. N.; Benrejeb, M. Model-based fault diagnosis of two-time scales singularly perturbed systems Proceedings Article Dans: First International Symposium on Control, Communications and Signal Processing, 2004., p. 819-822, 2004. Résumé | Liens | BibTeX | Étiquettes: Fault diagnosis;Fault detection;Redundancy;Isolation technology;Sensor systems;Robustness;Aircraft;Safety;Availability;Hardware @inproceedings{1296571, The aim of this paper is to detect and to isolate sensor faults in singularly perturbed systems (SPS), with emphasis on the use of slow subsystem. Firstly, we considered the fast subsystem as a modelling error by the approximation of the SPS with the slow subsystem. Structured residuals were generated, using robust parity space, to the fault diagnosis of the SPS. A second approach was to design a set of observer-based residuals based on the slow subsystem. In order to validate the proposed approaches, we applied the results on a F-8 aircraft example. |
Aoun, Mohamed; Malti, Rachid; Levron, François; Oustaloup, Alain Numerical simulations of fractional systems: An overview of existing methods and improvements Article de journal Dans: Nonlinear Dynamics, vol. 38, no. 1-4, p. 117 – 131, 2004, (Cited by: 117). Résumé | Liens | BibTeX | Étiquettes: Approximation theory, Computer simulation, Continuous time model, Differential equations, Discrete time model, Fractional calculus, Fractional model, Functions, Identification (control systems), Laplace transforms, Mathematical models, Time domain analysis @article{Aoun2004117, An overview of the main simulation methods of fractional systems is presented. Based on Oustaloup’s recursive poles and zeros approximation of a fractional integrator in a frequency band some improvements are proposed. They take into account boundary effects around outer frequency limits and simplify the synthesis of a rational approximation by eliminating arbitrarily chosen parameters. © 2004 Kluwer Academic Publishers. |
Malti, Rachid; Aoun, Mohamed; Oustaloup, Alain Synthesis of fractional Kautz-like basis with two periodically repeating complex conjugate modes Conférence 2004, (Cited by: 19). Résumé | Liens | BibTeX | Étiquettes: Approximation theory, Differential equations, Dynamical systems, Extrapolation, Fractional calculus, Fractional derivatives, Generalized orthogonal basis (GOB), Identification (control systems), Laplace transforms, Linear control systems, Mathematical models, Model reduction, Orthogonal functions, Polynomials, Set theory, System stability, Transfer functions @conference{Malti2004835, Fractional Kautz-like functions are synthesized extrapolating the definition of classical Kautz functions to fractional derivatives. The synthesized bases has two periodically repeating complex conjugate modes. The new basis extends the definition of the fractional Laguerre basis, by allowing the modes to be complex. An example is then provided in system identification context. |
Aoun, Mohamed; Malti, Rachid; Levron, François; Oustaloup, Alain Numerical simulations of fractional systems: An overview of existing methods and improvements Article de journal Dans: Nonlinear Dynamics, vol. 38, no. 1-4, p. 117 – 131, 2004, (Cited by: 117). Résumé | Liens | BibTeX | Étiquettes: Approximation theory, Computer simulation, Continuous time model, Differential equations, Discrete time model, Fractional calculus, Fractional model, Functions, Identification (control systems), Laplace transforms, Mathematical models, Time domain analysis @article{Aoun2004117b, An overview of the main simulation methods of fractional systems is presented. Based on Oustaloup’s recursive poles and zeros approximation of a fractional integrator in a frequency band some improvements are proposed. They take into account boundary effects around outer frequency limits and simplify the synthesis of a rational approximation by eliminating arbitrarily chosen parameters. © 2004 Kluwer Academic Publishers. |
Malti, Rachid; Aoun, Mohamed; Oustaloup, Alain Synthesis of fractional Kautz-like basis with two periodically repeating complex conjugate modes Conférence 2004, (Cited by: 19). Résumé | Liens | BibTeX | Étiquettes: Approximation theory, Differential equations, Dynamical systems, Extrapolation, Fractional calculus, Fractional derivatives, Generalized orthogonal basis (GOB), Identification (control systems), Laplace transforms, Linear control systems, Mathematical models, Model reduction, Orthogonal functions, Polynomials, Set theory, System stability, Transfer functions @conference{Malti2004835b, Fractional Kautz-like functions are synthesized extrapolating the definition of classical Kautz functions to fractional derivatives. The synthesized bases has two periodically repeating complex conjugate modes. The new basis extends the definition of the fractional Laguerre basis, by allowing the modes to be complex. An example is then provided in system identification context. |
Tellili, A.; Abdelkrim, M. N. Reliable H∞ controller design for singularly perturbed systems with sensor failure Conférence vol. 3, 2004, (cited By 3). Résumé | Liens | BibTeX | Étiquettes: Asymptotic stability; Control theory; Linear algebra; Perturbation techniques; Reliability; Riccati equations; Sensors; Systems analysis, Control equipment, Reliable H∞ control; Sensor failure; Singularly perturbed systems; Time scale decomposition @conference{Tellili20041636, This paper studies the reliable H∞ control for linear time-invariant singularly perturbed systems against sensor failures. By time-scale decomposition, the full-order system is decomposed into slow and fast subsystems. After designing a reliable H∞ controller for the global system, two reduced reliable H∞ sub-controllers based on the slow and fast problems are obtained through the manipulation of the algebraic Riccati equations. The resulting control systems are reliable in that they provide guaranteed asymptotic stability and H∞ performance when all control components are operational as well as when sensor failures occur. ©2004 IEEE. |
Tellili, Adel; Abdelkrim, Mohamed Naceur; Benrejeb, Mohamed Model-based fault diagnosis of two-time scales singularly perturbed systems Conférence 2004, (Cited by: 14). @conference{Tellili2004819, |
2003 |
Aoun, Mohamed; Malti, Rachid; Levron, François; Oustaloup, Alain Numerical simulations of fractional systems Conférence vol. 5 A, 2003, (Cited by: 16). Résumé | Liens | BibTeX | Étiquettes: Computer simulation, Differentiation (calculus), Fractional models, Fractional systems, Integration, Laplace transforms, Mathematical models, Transfer functions, Vectors @conference{Aoun2003745, This paper deals with the design and simulation of continuous-time models with fractional differentiation orders. Two new methods are proposed. The first is an improvement of the approximation of the fractional integration operator using recursive poles and zeros proposed by Oustaloup (1995) and Lin (2001). The second improves the simulation schema by using a modal representation. |
Aoun, Mohamed; Malti, Rachid; Levron, Francois; Oustaloup, Alain Orthonormal basis functions for modeling continuous-time fractional systems Conférence vol. 36, no. 16, 2003, (Cited by: 11; All Open Access, Bronze Open Access). Résumé | Liens | BibTeX | Étiquettes: Continuous time systems, Fourier analysis, Fourier coefficients, Fractional differentiation, Fractional systems, Identification (control systems), Laguerre filter, Laguerre functions, Least squares approximations, Least squares errors, Least squares methods, Orthogonal functions, Orthonormal basis functions, Poles, Religious buildings @conference{Aoun20031333, The classical Laguerre functions are known to be divergent as soon as their differentiation order is non-integer. They are hence inappropriate for representing fractional differentiation systems. A complete orthogonal basis, having fractional differentiation orders and a single pole, is synthesized. It extends the well-known definition of Laguerre functions to fractional systems. Hence a new class of fixed denominator models is provided for system identification. Fourier coefficients are computed using a least squares method. The least squares error is plotted versus the differentiation order and the pole, in an example, and shows that an optimal differentiation order may be located away from an integer number. Hence, the use of the synthesized basis is fully justitied. © 2003 International Federation of Automatic Control. |
Malti, Rachid; Aoun, Mohamed; Cois, Olivier; Oustaloup, Alain; Levron, François H2 norm of fractional differential systems Conférence vol. 5 A, 2003, (Cited by: 19). Liens | BibTeX | Étiquettes: Algebra, Computer simulation, Differential equations, Differentiation (calculus), Explicit systems, Fractional differential systems, Impulse response, Laplace transforms, Mathematical models, Theorem proving, Transfer functions @conference{Malti2003729, |
Malti, R.; Aoun, M.; Battaglia, J. -L.; Oustaloup, A.; Madani, K. Fractional Multimodels – Application to Heat Transfer Modeling Conférence vol. 36, no. 16, 2003, (Cited by: 4). Résumé | Liens | BibTeX | Étiquettes: Fractional differentiation, Fractional dynamics, Fractional order, Heat transfer model, Heat transfer performance, Heat transfer process, Identification (control systems), Linear systems, Multi-model, Multi-models, Nonlinear systems, Phase change temperature @conference{Malti20031663, This paper deals with identification of non linear systems using non linear fractional differentiation multimodels. All sub-models are described by fractional differentiation transfer functions. Performance of the newly proposed class of models is illustrated on a heat transfer process near a phase change temperature. © 2003 International Federation of Automatic Control. |
Aoun, Mohamed; Malti, Rachid; Levron, François; Oustaloup, Alain Numerical simulations of fractional systems Conférence vol. 5 A, 2003, (Cited by: 16). Résumé | Liens | BibTeX | Étiquettes: Computer simulation, Differentiation (calculus), Fractional models, Fractional systems, Integration, Laplace transforms, Mathematical models, Transfer functions, Vectors @conference{Aoun2003745b, This paper deals with the design and simulation of continuous-time models with fractional differentiation orders. Two new methods are proposed. The first is an improvement of the approximation of the fractional integration operator using recursive poles and zeros proposed by Oustaloup (1995) and Lin (2001). The second improves the simulation schema by using a modal representation. |
Aoun, Mohamed; Malti, Rachid; Levron, Francois; Oustaloup, Alain Orthonormal basis functions for modeling continuous-time fractional systems Conférence vol. 36, no. 16, 2003, (Cited by: 11; All Open Access, Bronze Open Access). Résumé | Liens | BibTeX | Étiquettes: Continuous time systems, Fourier analysis, Fourier coefficients, Fractional differentiation, Fractional systems, Identification (control systems), Laguerre filter, Laguerre functions, Least squares approximations, Least squares errors, Least squares methods, Orthogonal functions, Orthonormal basis functions, Poles, Religious buildings @conference{Aoun20031333b, The classical Laguerre functions are known to be divergent as soon as their differentiation order is non-integer. They are hence inappropriate for representing fractional differentiation systems. A complete orthogonal basis, having fractional differentiation orders and a single pole, is synthesized. It extends the well-known definition of Laguerre functions to fractional systems. Hence a new class of fixed denominator models is provided for system identification. Fourier coefficients are computed using a least squares method. The least squares error is plotted versus the differentiation order and the pole, in an example, and shows that an optimal differentiation order may be located away from an integer number. Hence, the use of the synthesized basis is fully justitied. © 2003 International Federation of Automatic Control. |
Malti, Rachid; Aoun, Mohamed; Cois, Olivier; Oustaloup, Alain; Levron, François H2 norm of fractional differential systems Conférence vol. 5 A, 2003, (Cited by: 19). Liens | BibTeX | Étiquettes: Algebra, Computer simulation, Differential equations, Differentiation (calculus), Explicit systems, Fractional differential systems, Impulse response, Laplace transforms, Mathematical models, Theorem proving, Transfer functions @conference{Malti2003729b, |
Malti, R.; Aoun, M.; Battaglia, J. -L.; Oustaloup, A.; Madani, K. Fractional Multimodels – Application to Heat Transfer Modeling Conférence vol. 36, no. 16, 2003, (Cited by: 4). Résumé | Liens | BibTeX | Étiquettes: Fractional differentiation, Fractional dynamics, Fractional order, Heat transfer model, Heat transfer performance, Heat transfer process, Identification (control systems), Linear systems, Multi-model, Multi-models, Nonlinear systems, Phase change temperature @conference{Malti20031663b, This paper deals with identification of non linear systems using non linear fractional differentiation multimodels. All sub-models are described by fractional differentiation transfer functions. Performance of the newly proposed class of models is illustrated on a heat transfer process near a phase change temperature. © 2003 International Federation of Automatic Control. |
Benrejeb, Mohamed; Abdelkrim, Mohamed Naceur On order reduction and stabilization of TSK nonlinear fuzzy models by using arrow form matrix Article de journal Dans: Systems Analysis Modelling Simulation, vol. 43, no. 7, p. 977 – 991, 2003, (Cited by: 15). @article{Benrejeb2003977, |
2002 |
Malti, Rachid; Cois, Olivier; Aoun, Mohammed; Levron, François; Oustaloup, Alain Energy of fractional order transfer functions Conférence vol. 15, no. 1, 2002, (Cited by: 5; All Open Access, Bronze Open Access). Résumé | Liens | BibTeX | Étiquettes: Automation, Calculations, Differentiation (calculus), Dynamical systems, Fractional calculus, Fractional order differentiations, Fractional order transfer function, Impulse response, Impulse response energy, Lebesgue space, Single mode, Square integrable, Strictly positive real, Transfer functions @conference{Malti2002449, The objective of the paper is to compute the impulse response energy of a fractional order transfer function having a single mode. The differentiation order n, defined in the sense of Riemann-Liouville, is allowed to be a strictly positive real number. A necessary and sufficient condition is established on n, in order for the impulse response to belong to the Lebesgue space L2[0, ∞[ of square integrable functions on [0, ∞[. Copyright © 2002 IFAC. |
Aoun, Mohamed; Malti, Rachid; Cois, Olivier; Oustaloup, Alain System identification using fractional hammerstein models Conférence vol. 15, no. 1, 2002, (Cited by: 23). Résumé | Liens | BibTeX | Étiquettes: Automation, Continuous time systems, Fractional differentiation, Fractional model, Fractional order, Hammerstein model, Hammerstein-type models, Identification (control systems), Identification method, Linear systems, Non-linear modelling, Nonlinear systems, Riemann-liouville definitions @conference{Aoun2002265, Identification of continuous-time non-linear systems characterised by fractional order dynamics is studied. The Riemann-Liouville definition of fractional differentiation is used. A new identification method is proposed through the extension of Hammerstein-type models by allowing their linear part to belong to the class of fractional models. Fractional models are compact and so are used here to model complex dynamics with few parameters. Copyright © 2002 IFAC. |
Aoun-Habbache, M.; Aoun, M.; Berthiaux, H.; Mizonov, V. An experimental method and a Markov chain model to describe axial and radial mixing in a hoop mixer Article de journal Dans: Powder Technology, vol. 128, no. 2-3, p. 159 – 167, 2002, (Cited by: 30). Résumé | Liens | BibTeX | Étiquettes: article, Experimental methodology, Flow interactions, Image analysis, Markov chain, Markov processes, methodology, mixer, modeling, powder, probability, solid-solid mixing, tracer @article{Aoun-Habbache2002159, An experimental methodology is developed to investigate the simultaneous axial and radial mixing of particles in a hoop mixer. This involves following the migration of a colored tracer, with flow properties identical to that of the bulk using tracer detection by image analysis. The particle transitions from all initial tracer positions inside the mixer are calculated and the experimental conditions are established which improve the homogeneity of the mixture. Finally, a Markov chain model is derived which gives a good representation of the experimental data. © 2002 Elsevier Science B.V. All rights reserved. |
Publications
2009 |
Diagnosis of a continuous stirred tank reactor using Kalman filter Conférence 2009, (Cited by: 9). |
Analysis of complex rectangular waveguide discontinuities using hybrid MVM-FEM Conférence 2009, ISBN: 9781424428021, (cited By 5). |
A sensorless neural model reference adaptive control for induction motor drives Conférence 2009, ISBN: 9781424443987, (cited By 6). |
Electromagnetic modeling of complex uniaxial waveguide discontinuities using a modified MVM Conférence 2009, ISBN: 9781424427208, (cited By 0). |
Modified simplex method applied to narrow bandwidth ridged waveguide filter optimization Conférence 2009, ISBN: 9781424446643, (cited By 1). |
Robust path planning for mobile robot based on fractional attractive force Conférence 2009, (Cited by: 11). |
Ferrite image lines studies by transverse operator method Conférence vol. 2, 2009, (Cited by: 1). |
Dispersion in the microwave planar dispositif with ferrite Conférence 2009, (Cited by: 0). |
A Rigorous Study of Some Planar Structures With Longitudinally Magnetized Ferrite by a Modified LSBR Method Article de journal Dans: International Journal of Microwave and Optical Technology, vol. 4, no. 6, p. 358-367, 2009, ISSN: 15530396, (cited By 1). |
Propagation constant of a rectangular waveguides completely full of ferrite magnetized longitudinally Article de journal Dans: Journal of Infrared, Millimeter, and Terahertz Waves, vol. 30, no. 8, p. 877-883, 2009, ISSN: 18666892, (cited By 7). |
IMC based automatic tuning method of PID controllers using neural networks Conférence 2009, (Cited by: 1). |
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). |
2008 |
Neural and fuzzy adaptive control of induction motor drives Conférence vol. 1019, 2008, (Cited by: 0). |
Path loss models comparison in radio mobile communications Article de journal Dans: International Journal of Soft Computing, vol. 3, no. 2, p. 88 – 92, 2008, (Cited by: 4). |
Attractive force based on fractional potential in dynamic motion planning for mobile robot Conférence vol. 5 PART B, 2008, (Cited by: 8). |
A Rigorous Study of Complex Modes by Applying the Transverse Operator in a Rectangular Guide of Ferrites Article de journal Dans: International Journal of Microwave and Optical Technology, vol. 3, no. 5, p. 535-540, 2008, ISSN: 15530396, (cited By 3). |
Design of an adaptive Kalman filter for fault detection of networked control systems Conférence 2008, ISBN: 9781424425051, (cited By 31). |
2007 |
Synthesis of fractional Laguerre basis for system approximation Article de journal Dans: Automatica, vol. 43, no. 9, p. 1640-1648, 2007, ISSN: 00051098, (cited By 119). |
Synthesis of fractional Laguerre basis for system approximation Article de journal Dans: Automatica, vol. 43, no. 9, p. 1640 – 1648, 2007, (Cited by: 115; All Open Access, Green Open Access). |
Reliable H∞ control of multiple time scales singularly perturbed systems with sensor failure Article de journal Dans: International Journal of Control, vol. 80, no. 5, p. 659-665, 2007, ISSN: 00207179, (cited By 27). |
2006 |
Fractional system identification for lead acid battery state of charge estimation Article de journal Dans: Signal Processing, vol. 86, no. 10, p. 2645 – 2657, 2006, (Cited by: 269). |
Estimation of lead acid battery state of charge with a novel fractional model Conférence vol. 2, no. PART 1, 2006, (Cited by: 6; All Open Access, Bronze Open Access). |
Fractional system identification for lead acid battery state of charge estimation Article de journal Dans: Signal Processing, vol. 86, no. 10, p. 2645 – 2657, 2006, (Cited by: 269). |
Estimation of lead acid battery state of charge with a novel fractional model Conférence vol. 2, no. PART 1, 2006, (Cited by: 6; All Open Access, Bronze Open Access). |
On the fault diagnosis of uncertain singularly perturbed systems Article de journal Dans: Proceedings of the Institution of Mechanical Engineers. Part I: Journal of Systems and Control Engineering, vol. 220, no. 6, p. 509-516, 2006, ISSN: 09596518, (cited By 5). |
2005 |
Synthesis and simulation of fractional orthonormal bases Conférence vol. 16, 2005, (Cited by: 1; All Open Access, Green Open Access). |
Synthesis and simulation of fractional orthonormal bases Conférence vol. 16, 2005, (Cited by: 1; All Open Access, Green Open Access). |
PID neural tuning for integrating processes Conférence 2005, (Cited by: 0). |
2004 |
Reliable H/sub /spl infin// controller design for singularly perturbed systems with sensor failure Proceedings Article Dans: 2004 IEEE International Conference on Industrial Technology, 2004. IEEE ICIT ’04., p. 1636-1641 Vol. 3, 2004. |
Model-based fault diagnosis of two-time scales singularly perturbed systems Proceedings Article Dans: First International Symposium on Control, Communications and Signal Processing, 2004., p. 819-822, 2004. |
Numerical simulations of fractional systems: An overview of existing methods and improvements Article de journal Dans: Nonlinear Dynamics, vol. 38, no. 1-4, p. 117 – 131, 2004, (Cited by: 117). |
Synthesis of fractional Kautz-like basis with two periodically repeating complex conjugate modes Conférence 2004, (Cited by: 19). |
Numerical simulations of fractional systems: An overview of existing methods and improvements Article de journal Dans: Nonlinear Dynamics, vol. 38, no. 1-4, p. 117 – 131, 2004, (Cited by: 117). |
Synthesis of fractional Kautz-like basis with two periodically repeating complex conjugate modes Conférence 2004, (Cited by: 19). |
Reliable H∞ controller design for singularly perturbed systems with sensor failure Conférence vol. 3, 2004, (cited By 3). |
Model-based fault diagnosis of two-time scales singularly perturbed systems Conférence 2004, (Cited by: 14). |
2003 |
Numerical simulations of fractional systems Conférence vol. 5 A, 2003, (Cited by: 16). |
Orthonormal basis functions for modeling continuous-time fractional systems Conférence vol. 36, no. 16, 2003, (Cited by: 11; All Open Access, Bronze Open Access). |
H2 norm of fractional differential systems Conférence vol. 5 A, 2003, (Cited by: 19). |
Fractional Multimodels – Application to Heat Transfer Modeling Conférence vol. 36, no. 16, 2003, (Cited by: 4). |
Numerical simulations of fractional systems Conférence vol. 5 A, 2003, (Cited by: 16). |
Orthonormal basis functions for modeling continuous-time fractional systems Conférence vol. 36, no. 16, 2003, (Cited by: 11; All Open Access, Bronze Open Access). |
H2 norm of fractional differential systems Conférence vol. 5 A, 2003, (Cited by: 19). |
Fractional Multimodels – Application to Heat Transfer Modeling Conférence vol. 36, no. 16, 2003, (Cited by: 4). |
On order reduction and stabilization of TSK nonlinear fuzzy models by using arrow form matrix Article de journal Dans: Systems Analysis Modelling Simulation, vol. 43, no. 7, p. 977 – 991, 2003, (Cited by: 15). |
2002 |
Energy of fractional order transfer functions Conférence vol. 15, no. 1, 2002, (Cited by: 5; All Open Access, Bronze Open Access). |
System identification using fractional hammerstein models Conférence vol. 15, no. 1, 2002, (Cited by: 23). |
An experimental method and a Markov chain model to describe axial and radial mixing in a hoop mixer Article de journal Dans: Powder Technology, vol. 128, no. 2-3, p. 159 – 167, 2002, (Cited by: 30). |