2023
|
Ounis, Walid; Chetoui, Manel; Najar, Salheddine; Aoun, Mohamed Programmable analogue fractional controller realization Conférence 2023. @conference{Ounis2023b,
title = {Programmable analogue fractional controller realization},
author = {Walid Ounis and Manel Chetoui and Salheddine Najar and Mohamed Aoun},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85182938982\&doi=10.1109%2fIW_MSS59200.2023.10369104\&partnerID=40\&md5=be9f5355e8c0ceea37f41ef5482c9ee6},
doi = {10.1109/IW_MSS59200.2023.10369104},
year = {2023},
date = {2023-01-01},
journal = {2023 IEEE International Workshop on Mechatronics Systems Supervision, IW_MSS 2023},
abstract = {A fractional-order controller is an infinite-memory system. It is described by a continuous time irrational transfer function. Its realization is a delicate problem especially when its parameters are real time tunable. This paper presents a real-time programmable analogue fractional controller implementation. The controller is based on a sum of a novel real-time programmable analogue first-order low-pass filter. The signal within the circuit remains analogue and is not converted into discrete values. Real-time adjustments are made using digital potentiometers and operational amplifiers. The proposed first-order low-pass filter offers several advantages. In particular, the time constant and DC gain are independently adjusted without relying on the ohmic value of digital potentiometers. The time constant and DC gain depend on the resolution of the digital potentiometers. The high resolution of the digital potentiometer enables the circuit to achieve a wide bandwidth and allows for the use of small capacitors at lower frequencies. The proposed real-time programmable analogue fractional controller is experimented to achieve a fractional integrator. The circuit yields good similarity between theoretical simulations and experimental measurements. © 2023 IEEE.},
keywords = {Analog circuits, Continuous time systems, Controllers, Digital potentiometer, First order, First order low-pass filter, Fractional integrators, Fractional-order controllers, Higher order dynamics systems, Low pass filters, Low-pass filters, Operational amplifiers, Potentiometers (electric measuring instruments), Programmable analog circuit, Programmable analogs, Real- time, Signal processing, Timing circuits},
pubstate = {published},
tppubtype = {conference}
}
A fractional-order controller is an infinite-memory system. It is described by a continuous time irrational transfer function. Its realization is a delicate problem especially when its parameters are real time tunable. This paper presents a real-time programmable analogue fractional controller implementation. The controller is based on a sum of a novel real-time programmable analogue first-order low-pass filter. The signal within the circuit remains analogue and is not converted into discrete values. Real-time adjustments are made using digital potentiometers and operational amplifiers. The proposed first-order low-pass filter offers several advantages. In particular, the time constant and DC gain are independently adjusted without relying on the ohmic value of digital potentiometers. The time constant and DC gain depend on the resolution of the digital potentiometers. The high resolution of the digital potentiometer enables the circuit to achieve a wide bandwidth and allows for the use of small capacitors at lower frequencies. The proposed real-time programmable analogue fractional controller is experimented to achieve a fractional integrator. The circuit yields good similarity between theoretical simulations and experimental measurements. © 2023 IEEE. |
Saafi, Omar; Dabbaghi, Boudour; Hamidi, Faical; Aoun, Mohamed Particle swarm optimization-based solutions for identification problems of autonomous hybrid switching systems Conférence 2023. @conference{Saafi2023b,
title = {Particle swarm optimization-based solutions for identification problems of autonomous hybrid switching systems},
author = {Omar Saafi and Boudour Dabbaghi and Faical Hamidi and Mohamed Aoun},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85182924528\&doi=10.1109%2fIW_MSS59200.2023.10369212\&partnerID=40\&md5=100bf547f598cc0f36cc7adc5d8c3fa0},
doi = {10.1109/IW_MSS59200.2023.10369212},
year = {2023},
date = {2023-01-01},
journal = {2023 IEEE International Workshop on Mechatronics Systems Supervision, IW_MSS 2023},
abstract = {In this paper we propose a new optimization technique based on an evolutionary method known as particle swarm optimization (PSO) for solving and specifying the switching instants of hybrid systems. The main objective is to minimize a performance measure that depends on these switching instants within a finite time interval. Our approach assumes that there is a predefined sequence of system modes and, at each switching instant, it is possible for a state-space variable to jump from one mode to another, resulting in an additional associated cost. Our approach is justified by numerical examples and compared with the results obtained by gradient-based methods. The results obtained by PSO are very promising, without requiring any a priori assumptions about the regularity of the objective function to be minimized. © 2023 IEEE.},
keywords = {Autonomous switching sequence, Hybrid switched systems, Hybrid switching systems, Hybrid systems, Identification problem, Numerical methods, Optimization techniques, Particle swarm, Particle swarm optimization, Particle swarm optimization (PSO), Swarm optimization, Switching instants, Switching sequence},
pubstate = {published},
tppubtype = {conference}
}
In this paper we propose a new optimization technique based on an evolutionary method known as particle swarm optimization (PSO) for solving and specifying the switching instants of hybrid systems. The main objective is to minimize a performance measure that depends on these switching instants within a finite time interval. Our approach assumes that there is a predefined sequence of system modes and, at each switching instant, it is possible for a state-space variable to jump from one mode to another, resulting in an additional associated cost. Our approach is justified by numerical examples and compared with the results obtained by gradient-based methods. The results obtained by PSO are very promising, without requiring any a priori assumptions about the regularity of the objective function to be minimized. © 2023 IEEE. |
2022
|
Yahia, Mohamed; Ali, Tarig; Mortula, Maruf; Abdelfattah, Riadh On MMSE Speckle Filtering of Polsar Images Proceedings Article Dans: IGARSS 2022 – 2022 IEEE International Geoscience and Remote Sensing Symposium, p. 373-376, 2022, ISSN: 2153-7003. @inproceedings{9883272,
title = {On MMSE Speckle Filtering of Polsar Images},
author = {Mohamed Yahia and Tarig Ali and Maruf Mortula and Riadh Abdelfattah},
doi = {10.1109/IGARSS46834.2022.9883272},
issn = {2153-7003},
year = {2022},
date = {2022-07-01},
booktitle = {IGARSS 2022 - 2022 IEEE International Geoscience and Remote Sensing Symposium},
pages = {373-376},
abstract = {The minimum mean square error (MMSE) based filters constitute an important branch of speckle reduction filtering techniques of synthetic aperture radar (SAR) and Polarimetric SAR (PolSAR) images. In this paper, the performance of MMSE based in terms of speckle reduction and spatial detail preservation is revised. To preserve the spatial details, the weight coefficient $b$ should be equal to 1. However, the authors demonstrated in this paper that this parameter do not fulfill this condition. As a consequence, the MMSE-based filters have some limitations in spatial detail preservation. In PolSAR filtering, the weight coefficient $b$ is estimated from the span image. However, it has been demonstrated that the standard deviation of the span (i. e. $sigma_v(span)$) is a pixel dependent. The use of a fixed $sigma_v(span)$ for the entire image as applied in the majority of the state of the art MMSE filters is not optimal.},
keywords = {Filtering;Geoscience and remote sensing;Mean square error methods;Speckle;Synthetic aperture radar;Standards;Speckle;MMSE filter;PolSAR;span},
pubstate = {published},
tppubtype = {inproceedings}
}
The minimum mean square error (MMSE) based filters constitute an important branch of speckle reduction filtering techniques of synthetic aperture radar (SAR) and Polarimetric SAR (PolSAR) images. In this paper, the performance of MMSE based in terms of speckle reduction and spatial detail preservation is revised. To preserve the spatial details, the weight coefficient $b$ should be equal to 1. However, the authors demonstrated in this paper that this parameter do not fulfill this condition. As a consequence, the MMSE-based filters have some limitations in spatial detail preservation. In PolSAR filtering, the weight coefficient $b$ is estimated from the span image. However, it has been demonstrated that the standard deviation of the span (i. e. $sigma_v(span)$) is a pixel dependent. The use of a fixed $sigma_v(span)$ for the entire image as applied in the majority of the state of the art MMSE filters is not optimal. |
Yahia, Mohamed; Ali, Tarig; Mortula, Maruf; Abdelfattah, Riadh Effects of Spatial Filtering on PolSAR Parameter Estimation Proceedings Article Dans: 2022 6th International Conference on Advanced Technologies for Signal and Image Processing (ATSIP), p. 1-5, 2022, ISSN: 2687-878X. @inproceedings{9805982,
title = {Effects of Spatial Filtering on PolSAR Parameter Estimation},
author = {Mohamed Yahia and Tarig Ali and Maruf Mortula and Riadh Abdelfattah},
doi = {10.1109/ATSIP55956.2022.9805982},
issn = {2687-878X},
year = {2022},
date = {2022-05-01},
booktitle = {2022 6th International Conference on Advanced Technologies for Signal and Image Processing (ATSIP)},
pages = {1-5},
abstract = {Speckle filtering is essential for accurate parameter estimation from polarimetric synthetic aperture (PolSAR) data. To reduce speckle, sufficiently large independent samples (i. e. N looks) are generally averaged. However, in real scene, these N-looks are not provided. To surmount this limitation, by exploiting the ergodicity of the SAR data, the multilooking is substituted by the spatial averaging of N homogenous neighboring pixels. In this letter, it has been demonstrated that the multilooking and spatial averaging are quite different. First, the spatial averaging introduced a correlation between the pixels whereas in the multilooking they remain independent. Secondly, in real scene, the spatial averaging estimation of the polarimetric parameters (i.e. intensity mean and variance, equivalent number of looks (ENL), entropy and alpha angle) is nosier and more biased than the multilooked ones. These results should be taken into account when dealing with PolSAR parameter estimation of real data from multilooked PolSAR data models.},
keywords = {Parameter estimation;Correlation;Filtering;Image processing;Estimation;Speckle;Apertures;Speckle;PolSAR;multilooking;spatial averaging},
pubstate = {published},
tppubtype = {inproceedings}
}
Speckle filtering is essential for accurate parameter estimation from polarimetric synthetic aperture (PolSAR) data. To reduce speckle, sufficiently large independent samples (i. e. N looks) are generally averaged. However, in real scene, these N-looks are not provided. To surmount this limitation, by exploiting the ergodicity of the SAR data, the multilooking is substituted by the spatial averaging of N homogenous neighboring pixels. In this letter, it has been demonstrated that the multilooking and spatial averaging are quite different. First, the spatial averaging introduced a correlation between the pixels whereas in the multilooking they remain independent. Secondly, in real scene, the spatial averaging estimation of the polarimetric parameters (i.e. intensity mean and variance, equivalent number of looks (ENL), entropy and alpha angle) is nosier and more biased than the multilooked ones. These results should be taken into account when dealing with PolSAR parameter estimation of real data from multilooked PolSAR data models. |
Abdelkrim, Tayssir; Tellili, Adel; Abdelkrim, Nouceyba Comparison between the additive tolerant control and PID control for nonlinear delayed system Proceedings Article Dans: 2022 19th International Multi-Conference on Systems, Signals & Devices (SSD), p. 385-392, 2022, ISSN: 2474-0446. @inproceedings{9955881,
title = {Comparison between the additive tolerant control and PID control for nonlinear delayed system},
author = {Tayssir Abdelkrim and Adel Tellili and Nouceyba Abdelkrim},
doi = {10.1109/SSD54932.2022.9955881},
issn = {2474-0446},
year = {2022},
date = {2022-05-01},
booktitle = {2022 19th International Multi-Conference on Systems, Signals \& Devices (SSD)},
pages = {385-392},
abstract = {This brief studies the problem of state and fault estimation for Non-Linear (NL) systems with time delay subject to sensor fault. Additive fault tolerant control (FTC) is proposed to achieve the stability of system. The original system is transformed to linear one. The principle of fault accommodation is based on adding a new order to this nominal order. When a sensor fault affects the system, the tracking error between the reference input and the measurement deviates from zero. The nominal command then changes in order to cancel the static error and the real output therefore become different from its reference value. In the presence of a sensor defect, the objective of the accommodation is to prevent the command to evolve. This task can be accomplished by analyzing and canceling the effect of the sensor fault on the $mathbfu$ command. After determining the amplitude of the fault, we move on to its compensation step, this step is done by adding the additive control law to the determined nominal control law. The generation of nominal control law consist to determinate the state feedback gain by using the pole placement technique.},
keywords = {State feedback;Additives;Regulators;PI control;Measurement uncertainty;Hydraulic systems;Fault tolerant control;Non-Linear;time delay;fault tolerant control;additive control;stability},
pubstate = {published},
tppubtype = {inproceedings}
}
This brief studies the problem of state and fault estimation for Non-Linear (NL) systems with time delay subject to sensor fault. Additive fault tolerant control (FTC) is proposed to achieve the stability of system. The original system is transformed to linear one. The principle of fault accommodation is based on adding a new order to this nominal order. When a sensor fault affects the system, the tracking error between the reference input and the measurement deviates from zero. The nominal command then changes in order to cancel the static error and the real output therefore become different from its reference value. In the presence of a sensor defect, the objective of the accommodation is to prevent the command to evolve. This task can be accomplished by analyzing and canceling the effect of the sensor fault on the $mathbfu$ command. After determining the amplitude of the fault, we move on to its compensation step, this step is done by adding the additive control law to the determined nominal control law. The generation of nominal control law consist to determinate the state feedback gain by using the pole placement technique. |
Hassen, Walid Ben; Tellili, Adel; Abdelkrim, Nouceyba; Wardi, Mohamed Iazhar Diagnosis of Nonlinear Delay Systems Proceedings Article Dans: 2022 19th International Multi-Conference on Systems, Signals & Devices (SSD), p. 823-828, 2022, ISSN: 2474-0446. @inproceedings{9955721,
title = {Diagnosis of Nonlinear Delay Systems},
author = {Walid Ben Hassen and Adel Tellili and Nouceyba Abdelkrim and Mohamed Iazhar Wardi},
doi = {10.1109/SSD54932.2022.9955721},
issn = {2474-0446},
year = {2022},
date = {2022-05-01},
booktitle = {2022 19th International Multi-Conference on Systems, Signals \& Devices (SSD)},
pages = {823-828},
abstract = {The general theme of this article concerns the diagnosis of nonlinear delay systems. Parity space and observers approaches are used to generate residuals. To accomplish fault isolation, we use a bank of observers for all possible faulty models. The paper considers constant actuator faults, that is, the outputs of some actuators are stuck at fixed undesirable constant values. The fault isolation strategy is based on combining the conventional observer design techniques with adaptation techniques. Based on the designed observers, a bank of residuals are defined correspondingly. The actuator faults can be isolated if only one residual goes to zero while the others do not. The faulty model with residual approaching zero identifies the faulty actuators. For linear and nonlinear systems with all states available, new sufficient conditions for fault isolation are derived, which require only that the distribution matrices of the actuators are of full column rank.},
keywords = {Fault diagnosis;Actuators;Adaptation models;Sufficient conditions;Delay systems;Simulation;Fault detection;Diagnostic;nonlinear systems;delayed systems;adaptive observer;Luenberger observer;dynamic parity space},
pubstate = {published},
tppubtype = {inproceedings}
}
The general theme of this article concerns the diagnosis of nonlinear delay systems. Parity space and observers approaches are used to generate residuals. To accomplish fault isolation, we use a bank of observers for all possible faulty models. The paper considers constant actuator faults, that is, the outputs of some actuators are stuck at fixed undesirable constant values. The fault isolation strategy is based on combining the conventional observer design techniques with adaptation techniques. Based on the designed observers, a bank of residuals are defined correspondingly. The actuator faults can be isolated if only one residual goes to zero while the others do not. The faulty model with residual approaching zero identifies the faulty actuators. For linear and nonlinear systems with all states available, new sufficient conditions for fault isolation are derived, which require only that the distribution matrices of the actuators are of full column rank. |
Jerbi, Houssem; Dabbagui, Boudour; Hamidi, Faical; Aoun, Mohamad; Bouazzi, Yassine; Aoun, Sondess Ben Computing the Domain of Attraction using Numerical Techniques Conférence 2022, (Cited by: 0). @conference{Jerbi2022,
title = {Computing the Domain of Attraction using Numerical Techniques},
author = {Houssem Jerbi and Boudour Dabbagui and Faical Hamidi and Mohamad Aoun and Yassine Bouazzi and Sondess Ben Aoun},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85134079276\&doi=10.1109%2fICAAID51067.2022.9799499\&partnerID=40\&md5=74612f4dcc28a8c7f1c2bfe63a8c27d5},
doi = {10.1109/ICAAID51067.2022.9799499},
year = {2022},
date = {2022-01-01},
journal = {Proceedings - 2022 4th International Conference on Applied Automation and Industrial Diagnostics, ICAAID 2022},
abstract = {Stability analysis of controlled nonlinear systems is a problem of fundamental importance in system engineering. This paper elaborates an explicit numerical technique to maximize a quadratic Lyapunov function for the class of polynomial nonlinear models. Using the computed Lyapunov function an enlarged subsets of the basin of attraction of an asymptotically stable equilibrium can be computed in an iterative analytical way. We mainly use the Carleman linearization technique that converts a nonlinear autonomous system of finite dimension into an equivalent linear infinite dimension one. We implement the sampling technique as a numerical tool allowing the maximization of estimated regions of attraction. An example is given to demonstrate the efficiency of the proposed approach. The numerical study analysis of the designed scheme is led using the Matlab software environment. © 2022 IEEE.},
note = {Cited by: 0},
keywords = {Asymptotically stable equilibrium, Basins of attraction, Carleman linearization, Domain of attraction, Iterative methods, Linearization, Lyapunov functions, Lyapunov's functions, Lypaunov functions, MATLAB, Non-linear modelling, Nonlinear systems, Numerical methods, Numerical techniques, Quadratic lyapunov function, Stability analyze, System stability},
pubstate = {published},
tppubtype = {conference}
}
Stability analysis of controlled nonlinear systems is a problem of fundamental importance in system engineering. This paper elaborates an explicit numerical technique to maximize a quadratic Lyapunov function for the class of polynomial nonlinear models. Using the computed Lyapunov function an enlarged subsets of the basin of attraction of an asymptotically stable equilibrium can be computed in an iterative analytical way. We mainly use the Carleman linearization technique that converts a nonlinear autonomous system of finite dimension into an equivalent linear infinite dimension one. We implement the sampling technique as a numerical tool allowing the maximization of estimated regions of attraction. An example is given to demonstrate the efficiency of the proposed approach. The numerical study analysis of the designed scheme is led using the Matlab software environment. © 2022 IEEE. |
Yakoub, Zaineb; Amairi, Messaoud; Chetoui, Manel; Aoun, Mohamed Bias Recursive Least Squares Method for Fractional Order System Identification Conférence 2022, (Cited by: 0). @conference{Yakoub20221003,
title = {Bias Recursive Least Squares Method for Fractional Order System Identification},
author = {Zaineb Yakoub and Messaoud Amairi and Manel Chetoui and Mohamed Aoun},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85143798506\&doi=10.1109%2fSSD54932.2022.9955869\&partnerID=40\&md5=33815d9cbb662e9c28d357625582a869},
doi = {10.1109/SSD54932.2022.9955869},
year = {2022},
date = {2022-01-01},
journal = {2022 19th IEEE International Multi-Conference on Systems, Signals and Devices, SSD 2022},
pages = {1003 \textendash 1008},
abstract = {This paper mainly studies the modeling and identification problems for fractional order systems. A novel modeling scheme based on an online identification technique is investigated. Firstly, the recursive least squares algorithm is applied to identify the fractional order system. However, if the measurement of the output signal is affected by an additive noise this algorithm is unable to give consistent estimates. Thus, this contribution implements a technique based on the bias compensation principle. The main idea is to eliminate the introduced bias by adding a correction term in the recursive least squares estimates. The results of the simulated example indicate that the proposed estimator provides good accuracy. © 2022 IEEE.},
note = {Cited by: 0},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
This paper mainly studies the modeling and identification problems for fractional order systems. A novel modeling scheme based on an online identification technique is investigated. Firstly, the recursive least squares algorithm is applied to identify the fractional order system. However, if the measurement of the output signal is affected by an additive noise this algorithm is unable to give consistent estimates. Thus, this contribution implements a technique based on the bias compensation principle. The main idea is to eliminate the introduced bias by adding a correction term in the recursive least squares estimates. The results of the simulated example indicate that the proposed estimator provides good accuracy. © 2022 IEEE. |
Dadi, Leila; Ethabet, Haifa; Aoun, Mohamed Set-Membership Fault Detection for Discrete-time Switched Linear Systems Conférence 2022, (Cited by: 0). @conference{Dadi2022190,
title = {Set-Membership Fault Detection for Discrete-time Switched Linear Systems},
author = {Leila Dadi and Haifa Ethabet and Mohamed Aoun},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85143822450\&doi=10.1109%2fSSD54932.2022.9955834\&partnerID=40\&md5=845297a35126246541ad5d43c4f68b5e},
doi = {10.1109/SSD54932.2022.9955834},
year = {2022},
date = {2022-01-01},
journal = {2022 19th IEEE International Multi-Conference on Systems, Signals and Devices, SSD 2022},
pages = {190 \textendash 194},
abstract = {This work deals with Fault Detection (FD) for a class of discrete-time switched linear systems with actuator faults subject to bounded disturbances. First, based on cooperativity and stability conditions and under the assumption that disturbances and measurement noise are unknown but bounded, upper and lower bounds of the state are calculated using an interval observer. The design conditions of the observer are expressed in terms of Linear Matrix Inequalities (LMIs). Second, a fault detection decision is developed to indicate the presence of faults using interval analysis. Simulation results are provided to illustrate the performance of the proposed fault detection approach. © 2022 IEEE.},
note = {Cited by: 0},
keywords = {Actuator fault, Actuators, Bounded disturbances, Cooperativity, Discrete time, Fault detection, Faults detection, Interval observers, Linear matrix inequalities, Linear systems, Set-membership, Stability condition, Switched linear system, Switched system},
pubstate = {published},
tppubtype = {conference}
}
This work deals with Fault Detection (FD) for a class of discrete-time switched linear systems with actuator faults subject to bounded disturbances. First, based on cooperativity and stability conditions and under the assumption that disturbances and measurement noise are unknown but bounded, upper and lower bounds of the state are calculated using an interval observer. The design conditions of the observer are expressed in terms of Linear Matrix Inequalities (LMIs). Second, a fault detection decision is developed to indicate the presence of faults using interval analysis. Simulation results are provided to illustrate the performance of the proposed fault detection approach. © 2022 IEEE. |
Lamouchi, Rihab; Amairi, Messaoud; Raissi, Tarek; Aoun, Mohamed Robust Fault Detection based on Zonotopic Observers for Linear Parameter Varying Systems Conférence 2022, (Cited by: 1). @conference{Lamouchi2022773,
title = {Robust Fault Detection based on Zonotopic Observers for Linear Parameter Varying Systems},
author = {Rihab Lamouchi and Messaoud Amairi and Tarek Raissi and Mohamed Aoun},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85136283232\&doi=10.1109%2fMED54222.2022.9837269\&partnerID=40\&md5=0f45c413f1fc67c6778e347ed65a2432},
doi = {10.1109/MED54222.2022.9837269},
year = {2022},
date = {2022-01-01},
journal = {2022 30th Mediterranean Conference on Control and Automation, MED 2022},
pages = {773 \textendash 778},
abstract = {In this paper, zonotopic fault detection methodology is proposed for a class of discrete-Time Linear Parameter Varying (LPV) systems with sensor faults. The disturbances and measurement noise are assumed to be unknown but bounded by zonotope. First, a fault detection observer is designed based on L? performance to attenuate the effects of the uncertainties and to improve the accuracy of the proposed residual framers. Then, the fault sensitivity is taken into account by measuring H-performance and zonotopic residual evaluation is presented. Finally, the effectiveness of the proposed method is demonstrated by a numerical example. © 2022 IEEE.},
note = {Cited by: 1},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
In this paper, zonotopic fault detection methodology is proposed for a class of discrete-Time Linear Parameter Varying (LPV) systems with sensor faults. The disturbances and measurement noise are assumed to be unknown but bounded by zonotope. First, a fault detection observer is designed based on L? performance to attenuate the effects of the uncertainties and to improve the accuracy of the proposed residual framers. Then, the fault sensitivity is taken into account by measuring H-performance and zonotopic residual evaluation is presented. Finally, the effectiveness of the proposed method is demonstrated by a numerical example. © 2022 IEEE. |
Mizouri, Hanin; Lamouchi, Rihab; Amairi, Messaoud Functional Interval-Observer-Based Fault Detection for Continuous-time Multivariable Linear Systems Conférence 2022, (Cited by: 1). @conference{Mizouri2022177,
title = {Functional Interval-Observer-Based Fault Detection for Continuous-time Multivariable Linear Systems},
author = {Hanin Mizouri and Rihab Lamouchi and Messaoud Amairi},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85147258246\&doi=10.1109%2fSTA56120.2022.10019016\&partnerID=40\&md5=bb2ed7df720880ee3c1053de30aac3d1},
doi = {10.1109/STA56120.2022.10019016},
year = {2022},
date = {2022-01-01},
journal = {2022 IEEE 21st International Conference on Sciences and Techniques of Automatic Control and Computer Engineering, STA 2022 - Proceedings},
pages = {177 \textendash 182},
note = {Cited by: 1},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
|
Dadi, Leila; Dinh, Thach Ngoc; Raïssi, Tarek; Ethabet, Haifa; Aoun, Mohamed New Finite-Time Observers design for a Discrete-Time Switched Linear System Conférence vol. 55, no. 40, 2022, (Cited by: 0; All Open Access, Bronze Open Access, Green Open Access). @conference{Dadi202273,
title = {New Finite-Time Observers design for a Discrete-Time Switched Linear System},
author = {Leila Dadi and Thach Ngoc Dinh and Tarek Ra\"{i}ssi and Haifa Ethabet and Mohamed Aoun},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85159376419\&doi=10.1016%2fj.ifacol.2023.01.051\&partnerID=40\&md5=949c6c46f6060c2b436e93abc952c158},
doi = {10.1016/j.ifacol.2023.01.051},
year = {2022},
date = {2022-01-01},
journal = {IFAC-PapersOnLine},
volume = {55},
number = {40},
pages = {73 \textendash 78},
abstract = {In this work, we consider a discrete-time switched linear system. A novel approach is introduced to estimate its state in a finite fixed time which can be arbitrarily chosen and is independent of the initial state. For cases where the additive disturbance and measurement noise are known, we provide an exact estimation. Otherwise, a finite-time interval observer is designed. The crucial idea is based on using past values of the input and output of the studied system and a minimal dwell time condition. Simulation results are provided to illustrate the effectiveness of the proposed techniques in different scenarios of finite time choices. Copyright © 2022 The Authors. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0/)},
note = {Cited by: 0; All Open Access, Bronze Open Access, Green Open Access},
keywords = {Additive disturbance, Approximate estimation, Discrete time, Exact estimation, Finite-time observers, Fixed time, Initial state, Linear systems, Measurement Noise, Observers designs, Switched linear system},
pubstate = {published},
tppubtype = {conference}
}
In this work, we consider a discrete-time switched linear system. A novel approach is introduced to estimate its state in a finite fixed time which can be arbitrarily chosen and is independent of the initial state. For cases where the additive disturbance and measurement noise are known, we provide an exact estimation. Otherwise, a finite-time interval observer is designed. The crucial idea is based on using past values of the input and output of the studied system and a minimal dwell time condition. Simulation results are provided to illustrate the effectiveness of the proposed techniques in different scenarios of finite time choices. Copyright © 2022 The Authors. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0/) |
Saidi, B.; Yacoub, Z.; Amairi, M.; Aoun, M. Constant Phase Based Design of Robust Fractional PI Controller for Uncertain First Order Plus Dead Time Systems Article de journal Dans: Studies in Systems, Decision and Control, vol. 364, p. 159 – 179, 2022, (Cited by: 0). @article{Saidi2022159,
title = {Constant Phase Based Design of Robust Fractional PI Controller for Uncertain First Order Plus Dead Time Systems},
author = {B. Saidi and Z. Yacoub and M. Amairi and M. Aoun},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85114349676\&doi=10.1007%2f978-3-030-71446-8_9\&partnerID=40\&md5=ea5ae2819dee454d7e099cdb9af51686},
doi = {10.1007/978-3-030-71446-8_9},
year = {2022},
date = {2022-01-01},
journal = {Studies in Systems, Decision and Control},
volume = {364},
pages = {159 \textendash 179},
abstract = {A new design method of a robust fractional order PI controller for uncertain First Order Plus Dead Time systems is proposed in this paper. The proposed design method uses a numerical optimization algorithm to determine the unknown controller parameters. The main objective of the proposed design method is improving the robustness in degree of stability to gain variations and the stability robustness to the other parameters variations that affect the phase by imposing a constant phase margin to the corrected open loop system in a pre-specified frequency band. Several simulation examples are presented to design the robust fractional PI controller and test the robustness for different forms of uncertainty. © 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.},
note = {Cited by: 0},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
A new design method of a robust fractional order PI controller for uncertain First Order Plus Dead Time systems is proposed in this paper. The proposed design method uses a numerical optimization algorithm to determine the unknown controller parameters. The main objective of the proposed design method is improving the robustness in degree of stability to gain variations and the stability robustness to the other parameters variations that affect the phase by imposing a constant phase margin to the corrected open loop system in a pre-specified frequency band. Several simulation examples are presented to design the robust fractional PI controller and test the robustness for different forms of uncertainty. © 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG. |
Lamouchi, Rihab; Raissi, Tarek; Amairi, Messaoud; Aoun, Mohamed On interval observer design for active Fault Tolerant Control of Linear Parameter-Varying systems Article de journal Dans: Systems and Control Letters, vol. 164, 2022, (Cited by: 5). @article{Lamouchi2022,
title = {On interval observer design for active Fault Tolerant Control of Linear Parameter-Varying systems},
author = {Rihab Lamouchi and Tarek Raissi and Messaoud Amairi and Mohamed Aoun},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85130126718\&doi=10.1016%2fj.sysconle.2022.105218\&partnerID=40\&md5=a6a5dac4c11a8622ed641e0369da31a6},
doi = {10.1016/j.sysconle.2022.105218},
year = {2022},
date = {2022-01-01},
journal = {Systems and Control Letters},
volume = {164},
abstract = {This paper proposes an active Fault Tolerant Control (FTC) scheme for polytopic uncertain Linear Parameter-Varying (LPV) systems subject to uncertainties and actuator faults. First, a fault estimation interval observer is designed to estimate the system state and the actuator fault. A novel approach is developed using the L∞ norm to attenuate the effects of the uncertainties and to improve the accuracy of the proposed observer. Then, based on the fault estimation information, the FTC strategy is designed using a linear state feedback control law and H∞ technique to compensate actuator faults and maintain system performance and stability, even under faulty conditions. Finally, the effectiveness of the proposed method is demonstrated by its application to a vehicle lateral dynamic nonlinear model. © 2022 Elsevier B.V.},
note = {Cited by: 5},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
This paper proposes an active Fault Tolerant Control (FTC) scheme for polytopic uncertain Linear Parameter-Varying (LPV) systems subject to uncertainties and actuator faults. First, a fault estimation interval observer is designed to estimate the system state and the actuator fault. A novel approach is developed using the L∞ norm to attenuate the effects of the uncertainties and to improve the accuracy of the proposed observer. Then, based on the fault estimation information, the FTC strategy is designed using a linear state feedback control law and H∞ technique to compensate actuator faults and maintain system performance and stability, even under faulty conditions. Finally, the effectiveness of the proposed method is demonstrated by its application to a vehicle lateral dynamic nonlinear model. © 2022 Elsevier B.V. |
Akremi, Rihab; Lamouchi, Rihab; Amairi, Messaoud Functional Interval Observers Design for Multivariable Linear Discrete-time Systems Conférence 2022, (Cited by: 1). @conference{Akremi2022976,
title = {Functional Interval Observers Design for Multivariable Linear Discrete-time Systems},
author = {Rihab Akremi and Rihab Lamouchi and Messaoud Amairi},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85143778927\&doi=10.1109%2fSSD54932.2022.9955706\&partnerID=40\&md5=39ea75f9f2972531df2f000f0748d945},
doi = {10.1109/SSD54932.2022.9955706},
year = {2022},
date = {2022-01-01},
journal = {2022 19th IEEE International Multi-Conference on Systems, Signals and Devices, SSD 2022},
pages = {976 \textendash 981},
note = {Cited by: 1},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
|
Lamouchi, Rihab; Raissi, Tarek; Amairi, Messaoud; Aoun, Mohamed On interval observer design for active Fault Tolerant Control of Linear Parameter-Varying systems Article de journal Dans: Systems and Control Letters, vol. 164, 2022, (Cited by: 5). @article{Lamouchi2022c,
title = {On interval observer design for active Fault Tolerant Control of Linear Parameter-Varying systems},
author = {Rihab Lamouchi and Tarek Raissi and Messaoud Amairi and Mohamed Aoun},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85130126718\&doi=10.1016%2fj.sysconle.2022.105218\&partnerID=40\&md5=a6a5dac4c11a8622ed641e0369da31a6},
doi = {10.1016/j.sysconle.2022.105218},
year = {2022},
date = {2022-01-01},
journal = {Systems and Control Letters},
volume = {164},
abstract = {This paper proposes an active Fault Tolerant Control (FTC) scheme for polytopic uncertain Linear Parameter-Varying (LPV) systems subject to uncertainties and actuator faults. First, a fault estimation interval observer is designed to estimate the system state and the actuator fault. A novel approach is developed using the L∞ norm to attenuate the effects of the uncertainties and to improve the accuracy of the proposed observer. Then, based on the fault estimation information, the FTC strategy is designed using a linear state feedback control law and H∞ technique to compensate actuator faults and maintain system performance and stability, even under faulty conditions. Finally, the effectiveness of the proposed method is demonstrated by its application to a vehicle lateral dynamic nonlinear model. © 2022 Elsevier B.V.},
note = {Cited by: 5},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
This paper proposes an active Fault Tolerant Control (FTC) scheme for polytopic uncertain Linear Parameter-Varying (LPV) systems subject to uncertainties and actuator faults. First, a fault estimation interval observer is designed to estimate the system state and the actuator fault. A novel approach is developed using the L∞ norm to attenuate the effects of the uncertainties and to improve the accuracy of the proposed observer. Then, based on the fault estimation information, the FTC strategy is designed using a linear state feedback control law and H∞ technique to compensate actuator faults and maintain system performance and stability, even under faulty conditions. Finally, the effectiveness of the proposed method is demonstrated by its application to a vehicle lateral dynamic nonlinear model. © 2022 Elsevier B.V. |
Najjar, Afef; Dinh, Thach Ngoc; Amairi, Messaoud; Raissi, Tarek Interval observer-based supervision of nonlinear networked control systems Article de journal Dans: Turkish Journal of Electrical Engineering and Computer Sciences, vol. 30, no. 4, p. 1219 – 1234, 2022, (Cited by: 1; All Open Access, Bronze Open Access, Green Open Access). @article{Najjar20221219,
title = {Interval observer-based supervision of nonlinear networked control systems},
author = {Afef Najjar and Thach Ngoc Dinh and Messaoud Amairi and Tarek Raissi},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85132216367\&doi=10.55730%2f1300-0632.3845\&partnerID=40\&md5=4da1a86b7492884e31c5ae1c1542d38f},
doi = {10.55730/1300-0632.3845},
year = {2022},
date = {2022-01-01},
journal = {Turkish Journal of Electrical Engineering and Computer Sciences},
volume = {30},
number = {4},
pages = {1219 \textendash 1234},
note = {Cited by: 1; All Open Access, Bronze Open Access, Green Open Access},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
Victor, Stéphane; Mayoufi, Abir; Malti, Rachid; Chetoui, Manel; Aoun, Mohamed System identification of MISO fractional systems: Parameter and differentiation order estimation Article de journal Dans: Automatica, vol. 141, 2022, (Cited by: 10). @article{Victor2022,
title = {System identification of MISO fractional systems: Parameter and differentiation order estimation},
author = {St\'{e}phane Victor and Abir Mayoufi and Rachid Malti and Manel Chetoui and Mohamed Aoun},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85127368402\&doi=10.1016%2fj.automatica.2022.110268\&partnerID=40\&md5=94d17d7d182d7bb2c6bffb4406265369},
doi = {10.1016/j.automatica.2022.110268},
year = {2022},
date = {2022-01-01},
journal = {Automatica},
volume = {141},
abstract = {This paper deals with continuous-time system identification of multiple-input single-output (MISO) fractional differentiation models. When differentiation orders are assumed to be known, coefficients are estimated using the simplified refined instrumental variable method for continuous-time fractional models extended to the MISO case. For unknown differentiation orders, a two-stage optimization algorithm is proposed with the developed instrumental variable for coefficient estimation and a gradient-based algorithm for differentiation order estimation. A new definition of structured-commensurability (or S-commensurability) is introduced to better cope with differentiation order estimation. Three variants of the algorithm are then proposed: (i) first, all differentiation orders are set as integer multiples of a global S-commensurate order, (ii) then, the differentiation orders are set as integer multiples of a local S-commensurate orders (one S-commensurate order for each subsystem), (iii) finally, all differentiation orders are estimated by releasing the S-commensurability constraint. The first variant has the smallest number of parameters and is used as a good initial hit for the second variant which in turn is used as a good initial hit for the third variant. Such a progressive increase of the number of parameters allows better performance of the optimization algorithm evaluated by Monte Carlo simulation analysis. © 2022 Elsevier Ltd},
note = {Cited by: 10},
keywords = {Continous time, Continuous time systems, Fractional model, Fractional systems, Instrumental variables, Intelligent systems, Monte Carlo methods, Multiple input single output systems, Multiple inputs single outputs, Optimization, Optimization algorithms, Order estimation, Order optimizations, Parameter estimation, Religious buildings, System-identification},
pubstate = {published},
tppubtype = {article}
}
This paper deals with continuous-time system identification of multiple-input single-output (MISO) fractional differentiation models. When differentiation orders are assumed to be known, coefficients are estimated using the simplified refined instrumental variable method for continuous-time fractional models extended to the MISO case. For unknown differentiation orders, a two-stage optimization algorithm is proposed with the developed instrumental variable for coefficient estimation and a gradient-based algorithm for differentiation order estimation. A new definition of structured-commensurability (or S-commensurability) is introduced to better cope with differentiation order estimation. Three variants of the algorithm are then proposed: (i) first, all differentiation orders are set as integer multiples of a global S-commensurate order, (ii) then, the differentiation orders are set as integer multiples of a local S-commensurate orders (one S-commensurate order for each subsystem), (iii) finally, all differentiation orders are estimated by releasing the S-commensurability constraint. The first variant has the smallest number of parameters and is used as a good initial hit for the second variant which in turn is used as a good initial hit for the third variant. Such a progressive increase of the number of parameters allows better performance of the optimization algorithm evaluated by Monte Carlo simulation analysis. © 2022 Elsevier Ltd |
Akremi, Rihab; Lamouchi, Rihab; Amairi, Messaoud L∞/H∞Functional Interval Observers Design for Multivariable Systems Conférence 2022, (Cited by: 0). @conference{Akremi2022265,
title = {L∞/H∞Functional Interval Observers Design for Multivariable Systems},
author = {Rihab Akremi and Rihab Lamouchi and Messaoud Amairi},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85136302914\&doi=10.1109%2fMED54222.2022.9837179\&partnerID=40\&md5=915f3b2c51188cd1014295a3032bb0d7},
doi = {10.1109/MED54222.2022.9837179},
year = {2022},
date = {2022-01-01},
journal = {2022 30th Mediterranean Conference on Control and Automation, MED 2022},
pages = {265 \textendash 270},
note = {Cited by: 0},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
|
Yakoub, Zaineb; Naifar, Omar; Amairi, Messaoud; Chetoui, Manel; Aoun, Mohamed; Makhlouf, Abdellatif Ben A Bias-Corrected Method for Fractional Linear Parameter Varying Systems Article de journal Dans: Mathematical Problems in Engineering, vol. 2022, 2022, (Cited by: 1; All Open Access, Gold Open Access). @article{Yakoub2022,
title = {A Bias-Corrected Method for Fractional Linear Parameter Varying Systems},
author = {Zaineb Yakoub and Omar Naifar and Messaoud Amairi and Manel Chetoui and Mohamed Aoun and Abdellatif Ben Makhlouf},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85128182629\&doi=10.1155%2f2022%2f7278157\&partnerID=40\&md5=6ea775beb03cf2de78d054b3e4819d41},
doi = {10.1155/2022/7278157},
year = {2022},
date = {2022-01-01},
journal = {Mathematical Problems in Engineering},
volume = {2022},
abstract = {This paper proposes an identification algorithm for the fractional Linear Parameter Varying (LPV) system considering noisy scheduling and output measurements. A bias correction technique is provided in order to compensate for the bias caused by the least squares algorithm. This approach was created to estimate either coefficients or fractional-order differentiation, and it has been proven to produce unbiased and reliable results. The suggested method's performance is assessed by the identification of two fractional models and was compared with Nelder-Mead Simplex method. © 2022 Zaineb Yakoub et al.},
note = {Cited by: 1; All Open Access, Gold Open Access},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
This paper proposes an identification algorithm for the fractional Linear Parameter Varying (LPV) system considering noisy scheduling and output measurements. A bias correction technique is provided in order to compensate for the bias caused by the least squares algorithm. This approach was created to estimate either coefficients or fractional-order differentiation, and it has been proven to produce unbiased and reliable results. The suggested method’s performance is assessed by the identification of two fractional models and was compared with Nelder-Mead Simplex method. © 2022 Zaineb Yakoub et al. |
Lamouchi, Rihab; Raissi, Tarek; Amairi, Messaoud; Aoun, Mohamed Interval observer-based methodology for passive fault tolerant control of linear parameter-varying systems Article de journal Dans: Transactions of the Institute of Measurement and Control, vol. 44, no. 5, p. 986 – 999, 2022, (Cited by: 4). @article{Lamouchi2022986,
title = {Interval observer-based methodology for passive fault tolerant control of linear parameter-varying systems},
author = {Rihab Lamouchi and Tarek Raissi and Messaoud Amairi and Mohamed Aoun},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85116041442\&doi=10.1177%2f01423312211040370\&partnerID=40\&md5=c5fa02b0d345303e5c1d1274ad12a7ef},
doi = {10.1177/01423312211040370},
year = {2022},
date = {2022-01-01},
journal = {Transactions of the Institute of Measurement and Control},
volume = {44},
number = {5},
pages = {986 \textendash 999},
abstract = {The paper deals with passive fault tolerant control for linear parameter varying systems subject to component faults. Under the assumption that the faults magnitudes are considered unknown but bounded, a novel methodology is proposed using interval observer with an (Formula presented.) formalism to attenuate the effects of the uncertainties and to improve the accuracy of the proposed observer. The necessary and sufficient conditions of the control system stability are developed in terms of matrix inequalities constraints using Lyapunov stability theory. Based on a linear state feedback, a fault tolerant control strategy is designed to handle component faults effect as well as external disturbances and preserve the system closed-loop stability for both fault-free and component faulty cases. Two simulation examples are presented to demonstrate the effectiveness of the proposed method. © The Author(s) 2021.},
note = {Cited by: 4},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The paper deals with passive fault tolerant control for linear parameter varying systems subject to component faults. Under the assumption that the faults magnitudes are considered unknown but bounded, a novel methodology is proposed using interval observer with an (Formula presented.) formalism to attenuate the effects of the uncertainties and to improve the accuracy of the proposed observer. The necessary and sufficient conditions of the control system stability are developed in terms of matrix inequalities constraints using Lyapunov stability theory. Based on a linear state feedback, a fault tolerant control strategy is designed to handle component faults effect as well as external disturbances and preserve the system closed-loop stability for both fault-free and component faulty cases. Two simulation examples are presented to demonstrate the effectiveness of the proposed method. © The Author(s) 2021. |
Yakoub, Z.; Aoun, M.; Amairi, M.; Chetoui, M. Identification of Continuous-Time Fractional Models from Noisy Input and Output Signals Article de journal Dans: Studies in Systems, Decision and Control, vol. 364, p. 181 – 216, 2022, (Cited by: 4). @article{Yakoub2022181,
title = {Identification of Continuous-Time Fractional Models from Noisy Input and Output Signals},
author = {Z. Yakoub and M. Aoun and M. Amairi and M. Chetoui},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85114302354\&doi=10.1007%2f978-3-030-71446-8_10\&partnerID=40\&md5=80ed5bbcd7ce308bb84cd34bbd7c6b37},
doi = {10.1007/978-3-030-71446-8_10},
year = {2022},
date = {2022-01-01},
journal = {Studies in Systems, Decision and Control},
volume = {364},
pages = {181 \textendash 216},
abstract = {It is well known that, in some practical system identification situations, measuring both input and output signals can commonly be affected by additive noises. In this paper, we consider the problem of identifying continuous-time fractional systems from noisy input and output measurements. The bias correction scheme, which aims at eliminating the bias introduced by the fractional order ordinary least squares method, is presented, based on the estimation of variances of the input and output measured noises. The compensation method for the input and output noises is also studied by introducing an augmented high-order fractional-order system in the identification algorithm. The presented algorithm is established to perform unbiased coefficients and fractional orders estimation. The promising performances of the proposed method are assessed via the identification of a fractional model and a fractional real electronic system. © 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.},
note = {Cited by: 4},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
It is well known that, in some practical system identification situations, measuring both input and output signals can commonly be affected by additive noises. In this paper, we consider the problem of identifying continuous-time fractional systems from noisy input and output measurements. The bias correction scheme, which aims at eliminating the bias introduced by the fractional order ordinary least squares method, is presented, based on the estimation of variances of the input and output measured noises. The compensation method for the input and output noises is also studied by introducing an augmented high-order fractional-order system in the identification algorithm. The presented algorithm is established to perform unbiased coefficients and fractional orders estimation. The promising performances of the proposed method are assessed via the identification of a fractional model and a fractional real electronic system. © 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG. |
Walid, Ounis; Slaheddine, Najar; Mohamed, Aoun REAL TIME TUNEABLE ANALOGUE PID CONTROLLER REALIZATION Conférence 2022, (Cited by: 0). @conference{Walid2022798,
title = {REAL TIME TUNEABLE ANALOGUE PID CONTROLLER REALIZATION},
author = {Ounis Walid and Najar Slaheddine and Aoun Mohamed},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85143839075\&doi=10.1109%2fSSD54932.2022.9955819\&partnerID=40\&md5=210dc688fb0012ad85e5775fbad65fb2},
doi = {10.1109/SSD54932.2022.9955819},
year = {2022},
date = {2022-01-01},
journal = {2022 19th IEEE International Multi-Conference on Systems, Signals and Devices, SSD 2022},
pages = {798 \textendash 803},
abstract = {This paper proposes a real time tunable analogue PID controller realisation witch can be used as a conventional PID, an adaptative PID or an intelligent PID 'iPID'. The integral and derivative of the PID input signal are continuous time signals and never sampled. This avoid discretization issues such as aliasing phenomena and the critical sampling period choice. The operative PID circuit part is totally analogue. Few digital potentiometers and digital switches are used. This allows to tune the parameters values of the controller and select PI, PD, PID configuration. The analogue circuit part is designed with a new original circuit architecture. A prototype of the circuit is implemented. Experimentation results show good similarity to the theoretical simulations. © 2022 IEEE.},
note = {Cited by: 0},
keywords = {Analog realization, Continuous time systems, Controller realization, Controllers, Discretization issue, Discretizations, Electric control equipment, PID controllers, Proportional control systems, Real- time, Three term control systems, Tunable analog PID, Tunable controller, Tunables, Voltage dividers},
pubstate = {published},
tppubtype = {conference}
}
This paper proposes a real time tunable analogue PID controller realisation witch can be used as a conventional PID, an adaptative PID or an intelligent PID ‘iPID’. The integral and derivative of the PID input signal are continuous time signals and never sampled. This avoid discretization issues such as aliasing phenomena and the critical sampling period choice. The operative PID circuit part is totally analogue. Few digital potentiometers and digital switches are used. This allows to tune the parameters values of the controller and select PI, PD, PID configuration. The analogue circuit part is designed with a new original circuit architecture. A prototype of the circuit is implemented. Experimentation results show good similarity to the theoretical simulations. © 2022 IEEE. |
Yahia, Mohamed; Ali, Tarig; Mortula, Md Maruf Span Statistics and Their Impacts on PolSAR Applications Article de journal Dans: IEEE Geoscience and Remote Sensing Letters, vol. 19, p. 1-5, 2022, ISSN: 1558-0571. @article{9290117,
title = {Span Statistics and Their Impacts on PolSAR Applications},
author = {Mohamed Yahia and Tarig Ali and Md Maruf Mortula},
doi = {10.1109/LGRS.2020.3039109},
issn = {1558-0571},
year = {2022},
date = {2022-01-01},
journal = {IEEE Geoscience and Remote Sensing Letters},
volume = {19},
pages = {1-5},
abstract = {The span is widely employed in synthetic aperture radar (SAR) polarimetry (PolSAR) applications. The span is a summation of the three polarimetric intensity channels, its probability density function (pdf) is commonly assumed in the literature as that of the intensity polarimetric channel. In this letter, the statistics of the span are investigated. It has been demonstrated that the span is modeled by $L$ -looks intensity pdf where $L$ is the equivalent number of looks (ENLs) of the span transformation, i.e., ENLspan. To estimate ENLspan, a theoretical model has been proposed. The results showed that ENLspan ranges in [1,3] depending on the media’s scattering property. Results demonstrated also that the use of the eigenvalues produced better estimation of ENLspan than the use of diagonal elements of the coherence or the covariance matrix. The proposed model produced also a more accurate estimation of ENLspan than the one obtained by the direct calculation. Finally, it has been demonstrated that the use of the introduced span statistics gave a correct estimation of the performance of the classification and the filtering PolSAR techniques whereas classical span statistics overestimated them.},
keywords = {Scattering;Estimation;Entropy;Covariance matrices;Speckle;Eigenvalues and eigenfunctions;Synthetic aperture radar;Equivalent number of look (ENL);synthetic aperture radar polarimetry (PolSAR);span;speckle},
pubstate = {published},
tppubtype = {article}
}
The span is widely employed in synthetic aperture radar (SAR) polarimetry (PolSAR) applications. The span is a summation of the three polarimetric intensity channels, its probability density function (pdf) is commonly assumed in the literature as that of the intensity polarimetric channel. In this letter, the statistics of the span are investigated. It has been demonstrated that the span is modeled by $L$ -looks intensity pdf where $L$ is the equivalent number of looks (ENLs) of the span transformation, i.e., ENLspan. To estimate ENLspan, a theoretical model has been proposed. The results showed that ENLspan ranges in [1,3] depending on the media’s scattering property. Results demonstrated also that the use of the eigenvalues produced better estimation of ENLspan than the use of diagonal elements of the coherence or the covariance matrix. The proposed model produced also a more accurate estimation of ENLspan than the one obtained by the direct calculation. Finally, it has been demonstrated that the use of the introduced span statistics gave a correct estimation of the performance of the classification and the filtering PolSAR techniques whereas classical span statistics overestimated them. |
Mhamdi, Halima; Othman, Sofiene Ben; Zouinkhi, Ahmed; Sakli, Hedi Smart electronic medical record based on blockchain technology to combat Covid-19 pandemic Conférence 2022, (Cited by: 0). @conference{Mhamdi2022698,
title = {Smart electronic medical record based on blockchain technology to combat Covid-19 pandemic},
author = {Halima Mhamdi and Sofiene Ben Othman and Ahmed Zouinkhi and Hedi Sakli},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85143827125\&doi=10.1109%2fSSD54932.2022.9955925\&partnerID=40\&md5=85ef81f878cccb60f724e6a19578d426},
doi = {10.1109/SSD54932.2022.9955925},
year = {2022},
date = {2022-01-01},
journal = {2022 19th IEEE International Multi-Conference on Systems, Signals and Devices, SSD 2022},
pages = {698 \textendash 702},
note = {Cited by: 0},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
|
Benjemaa, Rabeb; Elhsoumi, Aicha; Abdelkrim, Mohamed Naceur Fault diagnosis for neutral time delay LPV Descriptor systems Conférence 2022, (Cited by: 0). @conference{Benjemaa2022,
title = {Fault diagnosis for neutral time delay LPV Descriptor systems},
author = {Rabeb Benjemaa and Aicha Elhsoumi and Mohamed Naceur Abdelkrim},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85134028925\&doi=10.1109%2fICAAID51067.2022.9799504\&partnerID=40\&md5=004ba9ca6f66148ffb328a34d88d28e6},
doi = {10.1109/ICAAID51067.2022.9799504},
year = {2022},
date = {2022-01-01},
journal = {Proceedings - 2022 4th International Conference on Applied Automation and Industrial Diagnostics, ICAAID 2022},
note = {Cited by: 0},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
|
Lamouchi, Rihab; Raissi, Tarek; Amairi, Messaoud; Aoun, Mohamed Interval Observers Fault Detection for Linear Parameter Varying Systems with H- Fault Sensitivity Conférence 2022, (Cited by: 1). @conference{Lamouchi2022178,
title = {Interval Observers Fault Detection for Linear Parameter Varying Systems with H- Fault Sensitivity},
author = {Rihab Lamouchi and Tarek Raissi and Messaoud Amairi and Mohamed Aoun},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85143817218\&doi=10.1109%2fSSD54932.2022.9955878\&partnerID=40\&md5=861234ea09d7f66ce9fcabebfd66668e},
doi = {10.1109/SSD54932.2022.9955878},
year = {2022},
date = {2022-01-01},
journal = {2022 19th IEEE International Multi-Conference on Systems, Signals and Devices, SSD 2022},
pages = {178 \textendash 183},
abstract = {A fault detection (FD) method for a class of discrete-time Linear Parameter Varying (LPV) systems with sensor faults and measurement noise is proposed in this paper. Then, an interval FD observer is studied using Linfty performance to minimise the uncertainties effects and to improve the estimation accuracy. Furthermore, mathcalH- performance is considered in order to calculate the sensitivity of the residual to sensor faults and a FD decision is set to indicate their presence. The validity of the proposed methodology is demonstrated using a numerical example. © 2022 IEEE.},
note = {Cited by: 1},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
A fault detection (FD) method for a class of discrete-time Linear Parameter Varying (LPV) systems with sensor faults and measurement noise is proposed in this paper. Then, an interval FD observer is studied using Linfty performance to minimise the uncertainties effects and to improve the estimation accuracy. Furthermore, mathcalH- performance is considered in order to calculate the sensitivity of the residual to sensor faults and a FD decision is set to indicate their presence. The validity of the proposed methodology is demonstrated using a numerical example. © 2022 IEEE. |
Aljawarneh, Muteeah; Hamdaoui, Rim; Zouinkhi, Ahmed; Boussaid, Boumedyen; Abdelkrim, Mohamed Naceur Energy efficiency approaches in Wireless Sensor Networks Conférence 2022, (Cited by: 1). @conference{Aljawarneh2022736,
title = {Energy efficiency approaches in Wireless Sensor Networks},
author = {Muteeah Aljawarneh and Rim Hamdaoui and Ahmed Zouinkhi and Boumedyen Boussaid and Mohamed Naceur Abdelkrim},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85147252366\&doi=10.1109%2fSTA56120.2022.10019187\&partnerID=40\&md5=900b9140d929d3061443b0b0103b5e77},
doi = {10.1109/STA56120.2022.10019187},
year = {2022},
date = {2022-01-01},
journal = {2022 IEEE 21st International Conference on Sciences and Techniques of Automatic Control and Computer Engineering, STA 2022 - Proceedings},
pages = {736 \textendash 741},
note = {Cited by: 1},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
|
Bahhar, Chayma; Baccouche, Chokri; Sakli, Hedi Millimeter-Wave Rectenna and Rectifying Circuits for Wireless Power Transfer in 60 GHz Conférence 2022, (Cited by: 1). @conference{Bahhar20221346,
title = {Millimeter-Wave Rectenna and Rectifying Circuits for Wireless Power Transfer in 60 GHz},
author = {Chayma Bahhar and Chokri Baccouche and Hedi Sakli},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85143821415\&doi=10.1109%2fSSD54932.2022.9955939\&partnerID=40\&md5=f28a21cb3a5db82b44b63fb9e9399e7b},
doi = {10.1109/SSD54932.2022.9955939},
year = {2022},
date = {2022-01-01},
journal = {2022 19th IEEE International Multi-Conference on Systems, Signals and Devices, SSD 2022},
pages = {1346 \textendash 1350},
note = {Cited by: 1},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
|
Abdelbaki, Souid; Othman, Soufiene B.; Almalki, Faris; Sakli, Hedi Light deep CNN approach for multi-label pathology classification using frontal chest x-ray Ouvrage 2022, (Cited by: 0). @book{Abdelbaki2022445,
title = {Light deep CNN approach for multi-label pathology classification using frontal chest x-ray},
author = {Souid Abdelbaki and Soufiene B. Othman and Faris Almalki and Hedi Sakli},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85148484060\&doi=10.1002%2f9781119861850.ch25\&partnerID=40\&md5=d790913e4e002f8c1ce70967e373862a},
doi = {10.1002/9781119861850.ch25},
year = {2022},
date = {2022-01-01},
journal = {Machine Learning Algorithms for Signal and Image Processing},
pages = {445 \textendash 457},
note = {Cited by: 0},
keywords = {},
pubstate = {published},
tppubtype = {book}
}
|
Essid, Chaker; Abdelhamid, Chafai; Almalki, Faris. A.; Ali, Obaid; Sakli, Hedi New MIMO Antenna with Filtration for the Future Multiuser Systems in Satellite Communications Article de journal Dans: Wireless Communications and Mobile Computing, vol. 2022, 2022, (Cited by: 8; All Open Access, Gold Open Access). @article{Essid2022,
title = {New MIMO Antenna with Filtration for the Future Multiuser Systems in Satellite Communications},
author = {Chaker Essid and Chafai Abdelhamid and Faris. A. Almalki and Obaid Ali and Hedi Sakli},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85126101391\&doi=10.1155%2f2022%2f1040333\&partnerID=40\&md5=3deb7a705012d9d36b600f337ff4b6de},
doi = {10.1155/2022/1040333},
year = {2022},
date = {2022-01-01},
journal = {Wireless Communications and Mobile Computing},
volume = {2022},
note = {Cited by: 8; All Open Access, Gold Open Access},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
Rhouma, Taouba; Keller, Jean-Yves; Abdelkrim, Mohamed Naceur A Kalman Filter with Intermittent Observations and Reconstruction of Data Losses Article de journal Dans: International Journal of Applied Mathematics and Computer Science, vol. 32, no. 2, p. 241 – 253, 2022, (Cited by: 1). @article{Rhouma2022241,
title = {A Kalman Filter with Intermittent Observations and Reconstruction of Data Losses},
author = {Taouba Rhouma and Jean-Yves Keller and Mohamed Naceur Abdelkrim},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85133957250\&doi=10.34768%2famcs-2022-0018\&partnerID=40\&md5=80fc12bc5919a6f70c9e88a7ecdebaad},
doi = {10.34768/amcs-2022-0018},
year = {2022},
date = {2022-01-01},
journal = {International Journal of Applied Mathematics and Computer Science},
volume = {32},
number = {2},
pages = {241 \textendash 253},
note = {Cited by: 1},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
Mhamdi, Halima; Othman, Soufiene Ben; Zouinkhi, Ahmed; Sakli, Hedi Blockchain Technology in Healthcare: Use Cases Study Ouvrage 2022, (Cited by: 3). @book{Mhamdi2022261,
title = {Blockchain Technology in Healthcare: Use Cases Study},
author = {Halima Mhamdi and Soufiene Ben Othman and Ahmed Zouinkhi and Hedi Sakli},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85162721833\&doi=10.1007%2f978-981-16-8150-9_12\&partnerID=40\&md5=53a73021ff590a526d3d0d22a2421f10},
doi = {10.1007/978-981-16-8150-9_12},
year = {2022},
date = {2022-01-01},
journal = {Intelligent Healthcare: Infrastructure, Algorithms and Management},
pages = {261 \textendash 279},
note = {Cited by: 3},
keywords = {},
pubstate = {published},
tppubtype = {book}
}
|
Souid, Abdelbaki; Sakli, Hedi Xception-ResNet Autoencoder for Pneumothorax Segmentation Conférence 2022, (Cited by: 7). @conference{Souid2022586,
title = {Xception-ResNet Autoencoder for Pneumothorax Segmentation},
author = {Abdelbaki Souid and Hedi Sakli},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85139039397\&doi=10.1109%2fSETIT54465.2022.9875922\&partnerID=40\&md5=9172a7edce033daf5b39b98a02d2f17b},
doi = {10.1109/SETIT54465.2022.9875922},
year = {2022},
date = {2022-01-01},
journal = {2022 IEEE 9th International Conference on Sciences of Electronics, Technologies of Information and Telecommunications, SETIT 2022},
pages = {586 \textendash 590},
note = {Cited by: 7},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
|
Azzouz, I.; Boussaid, B.; Zouinkhi, A.; Abdelkrim, M. N. Energy-Aware Cluster Head selection protocol with Balanced Fuzzy C-mean Clustering in WSN Conférence 2022, (Cited by: 0). @conference{Azzouz20221534,
title = {Energy-Aware Cluster Head selection protocol with Balanced Fuzzy C-mean Clustering in WSN},
author = {I. Azzouz and B. Boussaid and A. Zouinkhi and M. N. Abdelkrim},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85143748653\&doi=10.1109%2fSSD54932.2022.9955909\&partnerID=40\&md5=85cce57f420b26546a3dd3379a6017dd},
doi = {10.1109/SSD54932.2022.9955909},
year = {2022},
date = {2022-01-01},
journal = {2022 19th IEEE International Multi-Conference on Systems, Signals and Devices, SSD 2022},
pages = {1534 \textendash 1539},
note = {Cited by: 0},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
|
Othman, Soufiene Ben; Almalki, Faris A.; Chakraborty, Chinmay; Sakli, Hedi Privacy-preserving aware data aggregation for IoT-based healthcare with green computing technologies Article de journal Dans: Computers and Electrical Engineering, vol. 101, 2022, (Cited by: 49). @article{Othman2022,
title = {Privacy-preserving aware data aggregation for IoT-based healthcare with green computing technologies},
author = {Soufiene Ben Othman and Faris A. Almalki and Chinmay Chakraborty and Hedi Sakli},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85129308229\&doi=10.1016%2fj.compeleceng.2022.108025\&partnerID=40\&md5=182a85b26c703ec9fc74b8f18abe32d2},
doi = {10.1016/j.compeleceng.2022.108025},
year = {2022},
date = {2022-01-01},
journal = {Computers and Electrical Engineering},
volume = {101},
note = {Cited by: 49},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
Yamna, Mounira Ben; Dakhli, Nabil; Sakli, Hedi Rectifier Circuit at 3.5 GHz for 5G Applications Conférence 2022, (Cited by: 0). @conference{BenYamna2022305,
title = {Rectifier Circuit at 3.5 GHz for 5G Applications},
author = {Mounira Ben Yamna and Nabil Dakhli and Hedi Sakli},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85147250699\&doi=10.1109%2fSTA56120.2022.10019163\&partnerID=40\&md5=e3ebb64c0873d8199762a2987f56feba},
doi = {10.1109/STA56120.2022.10019163},
year = {2022},
date = {2022-01-01},
journal = {2022 IEEE 21st International Conference on Sciences and Techniques of Automatic Control and Computer Engineering, STA 2022 - Proceedings},
pages = {305 \textendash 309},
note = {Cited by: 0},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
|
Yamna, Mounira Ben; Dakhli, Nabil; Sakli, Hedi Comparison between a simple serial and a voltage doubler rectifiers circuits Conférence 2022, (Cited by: 0). @conference{BenYamna20221721,
title = {Comparison between a simple serial and a voltage doubler rectifiers circuits},
author = {Mounira Ben Yamna and Nabil Dakhli and Hedi Sakli},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85143818369\&doi=10.1109%2fSSD54932.2022.9955823\&partnerID=40\&md5=d11af69e8c22a993ca50495733ccfec6},
doi = {10.1109/SSD54932.2022.9955823},
year = {2022},
date = {2022-01-01},
journal = {2022 19th IEEE International Multi-Conference on Systems, Signals and Devices, SSD 2022},
pages = {1721 \textendash 1725},
note = {Cited by: 0},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
|
Leila, Ennaceur Arjoun; Othman, Soufiene Ben; Sakli, Hedi IoT Based Patient Health Monitoring System to Combat COVID-19 Pandemic Conférence 2022, (Cited by: 4; All Open Access, Bronze Open Access). @conference{Leila2022144,
title = {IoT Based Patient Health Monitoring System to Combat COVID-19 Pandemic},
author = {Ennaceur Arjoun Leila and Soufiene Ben Othman and Hedi Sakli},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85126760528\&doi=10.1109%2fICCIT52419.2022.9711551\&partnerID=40\&md5=4f2ce9c741100489d40844c821a1b041},
doi = {10.1109/ICCIT52419.2022.9711551},
year = {2022},
date = {2022-01-01},
journal = {Proceedings of 2022 2nd International Conference on Computing and Information Technology, ICCIT 2022},
pages = {144 \textendash 147},
note = {Cited by: 4; All Open Access, Bronze Open Access},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
|
Mhamdi, Halima; Soufiene, Ben Othman; Zouinkhi, Ahmed; Ali, Obaid; Sakli, Hedi Trust-Based Smart Contract for Automated Agent to Agent Communication Article de journal Dans: Computational Intelligence and Neuroscience, vol. 2022, 2022, (Cited by: 2; All Open Access, Gold Open Access, Green Open Access). @article{Mhamdi2022,
title = {Trust-Based Smart Contract for Automated Agent to Agent Communication},
author = {Halima Mhamdi and Ben Othman Soufiene and Ahmed Zouinkhi and Obaid Ali and Hedi Sakli},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85138643435\&doi=10.1155%2f2022%2f5136865\&partnerID=40\&md5=362f7f5b69d03e77906f167925496508},
doi = {10.1155/2022/5136865},
year = {2022},
date = {2022-01-01},
journal = {Computational Intelligence and Neuroscience},
volume = {2022},
note = {Cited by: 2; All Open Access, Gold Open Access, Green Open Access},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
Wardi, Mohamed Lazhar; Abdelkrim, Rihab; Abdelkrim, Mohamed Naceur Fractional Order CRONE and PID Controllers Design for Nonlinear Systems Based on Multimodel Approach Article de journal Dans: Studies in Systems, Decision and Control, vol. 364, p. 123 – 142, 2022, (Cited by: 0). @article{Wardi2022123,
title = {Fractional Order CRONE and PID Controllers Design for Nonlinear Systems Based on Multimodel Approach},
author = {Mohamed Lazhar Wardi and Rihab Abdelkrim and Mohamed Naceur Abdelkrim},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85114369706\&doi=10.1007%2f978-3-030-71446-8_7\&partnerID=40\&md5=6c2e060646d5d347e36d40a8084493ef},
doi = {10.1007/978-3-030-71446-8_7},
year = {2022},
date = {2022-01-01},
journal = {Studies in Systems, Decision and Control},
volume = {364},
pages = {123 \textendash 142},
note = {Cited by: 0},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
Jouili, A.; Boussaid, B.; Zouinkhi, A.; Abdelkrim, M. N. Fault detection in wheeled mobile robot based on extended kalman filter Conférence 2022, (Cited by: 0). @conference{Jouili2022237,
title = {Fault detection in wheeled mobile robot based on extended kalman filter},
author = {A. Jouili and B. Boussaid and A. Zouinkhi and M. N. Abdelkrim},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85147249040\&doi=10.1109%2fSTA56120.2022.10019207\&partnerID=40\&md5=810bfa340613a7582b64e8b3fa08a4c1},
doi = {10.1109/STA56120.2022.10019207},
year = {2022},
date = {2022-01-01},
journal = {2022 IEEE 21st International Conference on Sciences and Techniques of Automatic Control and Computer Engineering, STA 2022 - Proceedings},
pages = {237 \textendash 242},
note = {Cited by: 0},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
|
Kilani, R.; Zouinkhi, A.; Bajic, E.; Abdelkrim, M. N. Socialization of Smart Communicative Objects in Industrial Internet of Things Conférence vol. 55, no. 10, 2022, (Cited by: 2; All Open Access, Bronze Open Access, Green Open Access). @conference{Kilani20221924,
title = {Socialization of Smart Communicative Objects in Industrial Internet of Things},
author = {R. Kilani and A. Zouinkhi and E. Bajic and M. N. Abdelkrim},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85144489919\&doi=10.1016%2fj.ifacol.2022.09.680\&partnerID=40\&md5=64aaeb90a5f8d950c23d7e47b7ea5ea7},
doi = {10.1016/j.ifacol.2022.09.680},
year = {2022},
date = {2022-01-01},
journal = {IFAC-PapersOnLine},
volume = {55},
number = {10},
pages = {1924 \textendash 1929},
note = {Cited by: 2; All Open Access, Bronze Open Access, Green Open Access},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
|
Sakli, Nizar; Ghabri, Haifa; Zouinkh, I. Ahmed; Sakli, Hedi; Najjari, Mustapha An efficient deep learning model to predict cardiovascular disease based on ECG signal Conférence 2022, (Cited by: 6). @conference{Sakli20221759,
title = {An efficient deep learning model to predict cardiovascular disease based on ECG signal},
author = {Nizar Sakli and Haifa Ghabri and I. Ahmed Zouinkh and Hedi Sakli and Mustapha Najjari},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85143782783\&doi=10.1109%2fSSD54932.2022.9955695\&partnerID=40\&md5=d71134395d35b373a6a381046e311c88},
doi = {10.1109/SSD54932.2022.9955695},
year = {2022},
date = {2022-01-01},
journal = {2022 19th IEEE International Multi-Conference on Systems, Signals and Devices, SSD 2022},
pages = {1759 \textendash 1763},
note = {Cited by: 6},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
|
Sakli, Nizar; Ghabri, Haifa; Soufiene, Ben Othman; Almalki, Faris. A.; Sakli, Hedi; Ali, Obaid; Najjari, Mustapha ResNet-50 for 12-Lead Electrocardiogram Automated Diagnosis Article de journal Dans: Computational Intelligence and Neuroscience, vol. 2022, 2022, (Cited by: 24; All Open Access, Gold Open Access, Green Open Access). @article{Sakli2022,
title = {ResNet-50 for 12-Lead Electrocardiogram Automated Diagnosis},
author = {Nizar Sakli and Haifa Ghabri and Ben Othman Soufiene and Faris. A. Almalki and Hedi Sakli and Obaid Ali and Mustapha Najjari},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85129977235\&doi=10.1155%2f2022%2f7617551\&partnerID=40\&md5=9d8c251dd079e8a7a193b1ecd14b7e9d},
doi = {10.1155/2022/7617551},
year = {2022},
date = {2022-01-01},
journal = {Computational Intelligence and Neuroscience},
volume = {2022},
note = {Cited by: 24; All Open Access, Gold Open Access, Green Open Access},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
Jerbi, Houssem; Dabbagui, Boudour; Hamidi, Faical; Aoun, Mohamad; Bouazzi, Yassine; Aoun, Sondess Ben Computing the Domain of Attraction using Numerical Techniques Conférence 2022, (Cited by: 0). @conference{Jerbi2022b,
title = {Computing the Domain of Attraction using Numerical Techniques},
author = {Houssem Jerbi and Boudour Dabbagui and Faical Hamidi and Mohamad Aoun and Yassine Bouazzi and Sondess Ben Aoun},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85134079276\&doi=10.1109%2fICAAID51067.2022.9799499\&partnerID=40\&md5=74612f4dcc28a8c7f1c2bfe63a8c27d5},
doi = {10.1109/ICAAID51067.2022.9799499},
year = {2022},
date = {2022-01-01},
journal = {Proceedings - 2022 4th International Conference on Applied Automation and Industrial Diagnostics, ICAAID 2022},
abstract = {Stability analysis of controlled nonlinear systems is a problem of fundamental importance in system engineering. This paper elaborates an explicit numerical technique to maximize a quadratic Lyapunov function for the class of polynomial nonlinear models. Using the computed Lyapunov function an enlarged subsets of the basin of attraction of an asymptotically stable equilibrium can be computed in an iterative analytical way. We mainly use the Carleman linearization technique that converts a nonlinear autonomous system of finite dimension into an equivalent linear infinite dimension one. We implement the sampling technique as a numerical tool allowing the maximization of estimated regions of attraction. An example is given to demonstrate the efficiency of the proposed approach. The numerical study analysis of the designed scheme is led using the Matlab software environment. © 2022 IEEE.},
note = {Cited by: 0},
keywords = {Asymptotically stable equilibrium, Basins of attraction, Carleman linearization, Domain of attraction, Iterative methods, Linearization, Lyapunov functions, Lyapunov's functions, Lypaunov functions, MATLAB, Non-linear modelling, Nonlinear systems, Numerical methods, Numerical techniques, Quadratic lyapunov function, Stability analyze, System stability},
pubstate = {published},
tppubtype = {conference}
}
Stability analysis of controlled nonlinear systems is a problem of fundamental importance in system engineering. This paper elaborates an explicit numerical technique to maximize a quadratic Lyapunov function for the class of polynomial nonlinear models. Using the computed Lyapunov function an enlarged subsets of the basin of attraction of an asymptotically stable equilibrium can be computed in an iterative analytical way. We mainly use the Carleman linearization technique that converts a nonlinear autonomous system of finite dimension into an equivalent linear infinite dimension one. We implement the sampling technique as a numerical tool allowing the maximization of estimated regions of attraction. An example is given to demonstrate the efficiency of the proposed approach. The numerical study analysis of the designed scheme is led using the Matlab software environment. © 2022 IEEE. |
Kilani, Rim; Zouinkhi, Ahmed; Bajic, Eddy; Abdelkrim, Mohamed Naceur A Socio-Inspired Methodology and Model for Advanced and Opportunistic Interactions between Industrial IoT Objects Article de journal Dans: Electronics (Switzerland), vol. 11, no. 8, 2022, (Cited by: 3; All Open Access, Gold Open Access, Green Open Access). @article{Kilani2022,
title = {A Socio-Inspired Methodology and Model for Advanced and Opportunistic Interactions between Industrial IoT Objects},
author = {Rim Kilani and Ahmed Zouinkhi and Eddy Bajic and Mohamed Naceur Abdelkrim},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85128503416\&doi=10.3390%2felectronics11081281\&partnerID=40\&md5=061951db656b885728a5944ad6d9a6a9},
doi = {10.3390/electronics11081281},
year = {2022},
date = {2022-01-01},
journal = {Electronics (Switzerland)},
volume = {11},
number = {8},
note = {Cited by: 3; All Open Access, Gold Open Access, Green Open Access},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
Yakoub, Zaineb; Amairi, Messaoud; Chetoui, Manel; Aoun, Mohamed Bias Recursive Least Squares Method for Fractional Order System Identification Conférence 2022, (Cited by: 0). @conference{Yakoub20221003b,
title = {Bias Recursive Least Squares Method for Fractional Order System Identification},
author = {Zaineb Yakoub and Messaoud Amairi and Manel Chetoui and Mohamed Aoun},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85143798506\&doi=10.1109%2fSSD54932.2022.9955869\&partnerID=40\&md5=33815d9cbb662e9c28d357625582a869},
doi = {10.1109/SSD54932.2022.9955869},
year = {2022},
date = {2022-01-01},
journal = {2022 19th IEEE International Multi-Conference on Systems, Signals and Devices, SSD 2022},
pages = {1003 \textendash 1008},
abstract = {This paper mainly studies the modeling and identification problems for fractional order systems. A novel modeling scheme based on an online identification technique is investigated. Firstly, the recursive least squares algorithm is applied to identify the fractional order system. However, if the measurement of the output signal is affected by an additive noise this algorithm is unable to give consistent estimates. Thus, this contribution implements a technique based on the bias compensation principle. The main idea is to eliminate the introduced bias by adding a correction term in the recursive least squares estimates. The results of the simulated example indicate that the proposed estimator provides good accuracy. © 2022 IEEE.},
note = {Cited by: 0},
keywords = {Additive noise, Algebra, Bias compensation, Fractional order, Fractional order differentiation, Fractional-order systems, Identification, Least Square, Least squares approximations, Model problems, Modelling and identifications, Recursive least-squares method, System-identification},
pubstate = {published},
tppubtype = {conference}
}
This paper mainly studies the modeling and identification problems for fractional order systems. A novel modeling scheme based on an online identification technique is investigated. Firstly, the recursive least squares algorithm is applied to identify the fractional order system. However, if the measurement of the output signal is affected by an additive noise this algorithm is unable to give consistent estimates. Thus, this contribution implements a technique based on the bias compensation principle. The main idea is to eliminate the introduced bias by adding a correction term in the recursive least squares estimates. The results of the simulated example indicate that the proposed estimator provides good accuracy. © 2022 IEEE. |
Manita, Marwa; Boussaid, Boumedyen; Abdelkrim, Mohamed Naceur Wheeled Mobile Robot Control Approaches: Comparative Analysis Conférence 2022, (Cited by: 0). @conference{Manita20221913,
title = {Wheeled Mobile Robot Control Approaches: Comparative Analysis},
author = {Marwa Manita and Boumedyen Boussaid and Mohamed Naceur Abdelkrim},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85143749785\&doi=10.1109%2fSSD54932.2022.9955504\&partnerID=40\&md5=dde2e5f9ed2f59845027c408f282a34d},
doi = {10.1109/SSD54932.2022.9955504},
year = {2022},
date = {2022-01-01},
journal = {2022 19th IEEE International Multi-Conference on Systems, Signals and Devices, SSD 2022},
pages = {1913 \textendash 1918},
note = {Cited by: 0},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
|
Bensalem, Yemna; Abbassi, Abelkader; Abbassi, Rabeh; Jerbi, Houssem; Alturki, Mansoor; Albaker, Abdullah; Kouzou, Abdallah; Abdelkrim, M. N. Speed tracking control design of a five-phase PMSM-based electric vehicle: a backstepping active fault-tolerant approach Article de journal Dans: Electrical Engineering, vol. 104, no. 4, p. 2155 – 2171, 2022, (Cited by: 2). @article{Bensalem20222155,
title = {Speed tracking control design of a five-phase PMSM-based electric vehicle: a backstepping active fault-tolerant approach},
author = {Yemna Bensalem and Abelkader Abbassi and Rabeh Abbassi and Houssem Jerbi and Mansoor Alturki and Abdullah Albaker and Abdallah Kouzou and M. N. Abdelkrim},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85123471832\&doi=10.1007%2fs00202-021-01467-3\&partnerID=40\&md5=e2b497026adb74655d0adea23ce3104d},
doi = {10.1007/s00202-021-01467-3},
year = {2022},
date = {2022-01-01},
journal = {Electrical Engineering},
volume = {104},
number = {4},
pages = {2155 \textendash 2171},
note = {Cited by: 2},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
