Rihab Lamouchi - Academia.edu (original) (raw)

Papers by Rihab Lamouchi

Research paper thumbnail of L∞-Functional Interval Observers for Continuous-time Linear Parameter-Varying Multivariable Systems

2023 31st Mediterranean Conference on Control and Automation (MED)

Research paper thumbnail of Functional interval observer design for multivariable linear parameter-varying systems

European Journal of Control

Research paper thumbnail of Functional Interval-Observer-Based Fault Detection for Continuous-time Multivariable Linear Systems

2022 IEEE 21st international Ccnference on Sciences and Techniques of Automatic Control and Computer Engineering (STA), Dec 19, 2022

Research paper thumbnail of Interval Observers Fault Detection for Linear Parameter Varying Systems with H- Fault Sensitivity

2022 19th International Multi-Conference on Systems, Signals & Devices (SSD)

Research paper thumbnail of Functional Interval-Observer-Based Fault Detection for Continuous-time Multivariable Linear Systems

2022 IEEE 21st international Ccnference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)

Research paper thumbnail of Functional Interval Observers Design for Multivariable Linear Discrete-time Systems

2022 19th International Multi-Conference on Systems, Signals & Devices (SSD)

Research paper thumbnail of Contributions à l'observation et à la commande tolérante aux fautes des systèmes incertains. (Contributions to observation and fault-tolerant control of uncertain systems)

Les travaux de recherche presentes dans ce memoire portent sur la synthese d'observateurs int... more Les travaux de recherche presentes dans ce memoire portent sur la synthese d'observateurs intervalles pour la commande tolerante aux fautes de systemes incertains. La presence de defauts, d'incertitudes et de perturbations peut provoquer des reactions indesirables du systeme commande. Dans ce contexte, nous avons developpe deux approches de commande tolerante aux fautes basees sur des observateurs intervalles dans le cas ou les defauts et les incertitudes sont inconnus mais bornes. La premiere approche, dite passive, permet de garantir la stabilite du systeme en boucle fermee y compris en presence de defauts actionneurs et/ou composants. La seconde approche, dite active, permet de compenser l'effet des defauts et d'assurer la stabilite et les performances desirees du systeme. Ces contributions sont validees par des simulations numeriques.

Research paper thumbnail of Contributions to observation and fault-tolerant control of uncertain systems

Les travaux de recherche présentés dans ce mémoire portent sur la synthèse d'observateurs int... more Les travaux de recherche présentés dans ce mémoire portent sur la synthèse d'observateurs intervalles pour la commande tolérante aux fautes de systèmes incertains. La présence de défauts, d'incertitudes et de perturbations peut provoquer des réactions indésirables du système commandé. Dans ce contexte, nous avons développé deux approches de commande tolérante aux fautes basées sur des observateurs intervalles dans le cas où les défauts et les incertitudes sont inconnus mais bornés. La première approche, dite passive, permet de garantir la stabilité du système en boucle fermée y compris en présence de défauts actionneurs et/ou composants. La seconde approche, dite active, permet de compenser l'effet des défauts et d'assurer la stabilité et les performances désirées du système. Ces contributions sont validées par des simulations numériques.The research work presented in this thesis focuses on the design of interval observers for fault-tolerant control of uncertain syst...

Research paper thumbnail of L∞/H∞ Functional Interval Observers Design for Multivariable Systems

2022 30th Mediterranean Conference on Control and Automation (MED)

Research paper thumbnail of Robust Fault Detection based on Zonotopic Observers for Linear Parameter Varying Systems

2022 30th Mediterranean Conference on Control and Automation (MED)

Research paper thumbnail of Active fault tolerant control using zonotopic techniques for linear parameter varying systems: Application to wind turbine system

European Journal of Control

Research paper thumbnail of On interval observer design for active Fault Tolerant Control of Linear Parameter-Varying systems

Systems & Control Letters

Research paper thumbnail of Interval observer-based methodology for passive fault tolerant control of linear parameter-varying systems

Transactions of the Institute of Measurement and Control, 2021

The paper deals with passive fault tolerant control for linear parameter varying systems subject ... more 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: see text] 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.

Research paper thumbnail of Interval Observer Design for Actuator Fault Estimation of Linear Parameter-Varying Systems

IFAC-PapersOnLine, 2018

This work is devoted to fault estimation of discrete-time Linear Parameter-Varying (LPV) systems ... more This work is devoted to fault estimation of discrete-time Linear Parameter-Varying (LPV) systems subject to actuator additive faults and external disturbances. Under the assumption that the measurement noises and the disturbances are unknown but bounded, an interval observer is designed, based on decoupling the fault effect, to compute a lower and upper bounds for the unmeasured state and the faults. Stability conditions are expressed in terms of matrices inequalities. A case study is used to illustrate the effectiveness of the proposed approach.

Research paper thumbnail of Actuator Fault Compensation in a Set-membership Framework for Linear Parameter-Varying Systems

IFAC-PapersOnLine, 2017

This paper presents an actuator fault compensation approach for a class of Linear Parameter-Varyi... more This paper presents an actuator fault compensation approach for a class of Linear Parameter-Varying (LPV) systems with noisy measurements. The proposed method is based on interval estimation assuming that the fault vector and the external disturbances are unknown but bounded. The main idea consists in designing a control law, based on a linear state feedback, to guarantee closed-loop stability. An additive control, based on fault bounds, is used to compensate the impact of actuator faults on system performances. The closed-loop stability of the robust fault compensation scheme is established in the Lyapunov sense. Finally, the theoretical results are illustrated using a numerical example.

Research paper thumbnail of Interval observer framework for fault-tolerant control of linear parameter-varying systems

International Journal of Control, 2017

This paper addresses the problem of passive Fault Tolerant Control (FTC) for Linear Parameter-Var... more This paper addresses the problem of passive Fault Tolerant Control (FTC) for Linear Parameter-Varying (LPV) systems subject to actuator faults. The FTC, based on a linear state feedback, is designed to compensate the impact of actuator faults on system performance by stabilizing the closed-loop system using interval observers. The design of interval observers is based on the discrete-time Luenberger observer structure, where uncertainties and faults with known bounds are considered. Sufficient conditions for the existence of the proposed observer are explicitly provided. Simulation results are presented to show the effectiveness of the proposed approach.

Research paper thumbnail of Interval observer design for Linear Parameter-Varying systems subject to component faults

2016 24th Mediterranean Conference on Control and Automation (MED), 2016

In this paper an interval observer for Linear Parameter-Varying (LPV) systems is proposed. The co... more In this paper an interval observer for Linear Parameter-Varying (LPV) systems is proposed. The considered systems are assumed to be subject to parameter uncertainties and component faults whose effect can be approximated by parameters deviations. Under some conditions, an interval observer with discrete-time Luenberger structure is developed to cope with uncertainties and faults ensuring guaranteed bounds on the estimated states and their stability. The interval observer design is based on assumption that the uncertainties and the faults magnitudes are considered as unknown but bounded. A numerical example shows the efficiency of the proposed technique.

Research paper thumbnail of Fault tolerant control in a set-membership framework

2016 European Control Conference (ECC), 2016

In this paper, a Passive Fault Tolerant Control (PFTC) strategy for Linear Time Invariant (LTI) s... more In this paper, a Passive Fault Tolerant Control (PFTC) strategy for Linear Time Invariant (LTI) systems subject to actuator faults is proposed. The idea of this PFTC method is to compute a control law to cope with additive actuator faults using interval observers. The considered system is assumed to be subject to bounded noises and disturbances without any additional assumptions. The FTC is implemented as a state linear feedback control and designed using interval observers techniques. A numerical example shows the efficiency of the proposed technique.

Research paper thumbnail of L∞-Functional Interval Observers for Continuous-time Linear Parameter-Varying Multivariable Systems

2023 31st Mediterranean Conference on Control and Automation (MED)

Research paper thumbnail of Functional interval observer design for multivariable linear parameter-varying systems

European Journal of Control

Research paper thumbnail of Functional Interval-Observer-Based Fault Detection for Continuous-time Multivariable Linear Systems

2022 IEEE 21st international Ccnference on Sciences and Techniques of Automatic Control and Computer Engineering (STA), Dec 19, 2022

Research paper thumbnail of Interval Observers Fault Detection for Linear Parameter Varying Systems with H- Fault Sensitivity

2022 19th International Multi-Conference on Systems, Signals & Devices (SSD)

Research paper thumbnail of Functional Interval-Observer-Based Fault Detection for Continuous-time Multivariable Linear Systems

2022 IEEE 21st international Ccnference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)

Research paper thumbnail of Functional Interval Observers Design for Multivariable Linear Discrete-time Systems

2022 19th International Multi-Conference on Systems, Signals & Devices (SSD)

Research paper thumbnail of Contributions à l'observation et à la commande tolérante aux fautes des systèmes incertains. (Contributions to observation and fault-tolerant control of uncertain systems)

Les travaux de recherche presentes dans ce memoire portent sur la synthese d'observateurs int... more Les travaux de recherche presentes dans ce memoire portent sur la synthese d'observateurs intervalles pour la commande tolerante aux fautes de systemes incertains. La presence de defauts, d'incertitudes et de perturbations peut provoquer des reactions indesirables du systeme commande. Dans ce contexte, nous avons developpe deux approches de commande tolerante aux fautes basees sur des observateurs intervalles dans le cas ou les defauts et les incertitudes sont inconnus mais bornes. La premiere approche, dite passive, permet de garantir la stabilite du systeme en boucle fermee y compris en presence de defauts actionneurs et/ou composants. La seconde approche, dite active, permet de compenser l'effet des defauts et d'assurer la stabilite et les performances desirees du systeme. Ces contributions sont validees par des simulations numeriques.

Research paper thumbnail of Contributions to observation and fault-tolerant control of uncertain systems

Les travaux de recherche présentés dans ce mémoire portent sur la synthèse d'observateurs int... more Les travaux de recherche présentés dans ce mémoire portent sur la synthèse d'observateurs intervalles pour la commande tolérante aux fautes de systèmes incertains. La présence de défauts, d'incertitudes et de perturbations peut provoquer des réactions indésirables du système commandé. Dans ce contexte, nous avons développé deux approches de commande tolérante aux fautes basées sur des observateurs intervalles dans le cas où les défauts et les incertitudes sont inconnus mais bornés. La première approche, dite passive, permet de garantir la stabilité du système en boucle fermée y compris en présence de défauts actionneurs et/ou composants. La seconde approche, dite active, permet de compenser l'effet des défauts et d'assurer la stabilité et les performances désirées du système. Ces contributions sont validées par des simulations numériques.The research work presented in this thesis focuses on the design of interval observers for fault-tolerant control of uncertain syst...

Research paper thumbnail of L∞/H∞ Functional Interval Observers Design for Multivariable Systems

2022 30th Mediterranean Conference on Control and Automation (MED)

Research paper thumbnail of Robust Fault Detection based on Zonotopic Observers for Linear Parameter Varying Systems

2022 30th Mediterranean Conference on Control and Automation (MED)

Research paper thumbnail of Active fault tolerant control using zonotopic techniques for linear parameter varying systems: Application to wind turbine system

European Journal of Control

Research paper thumbnail of On interval observer design for active Fault Tolerant Control of Linear Parameter-Varying systems

Systems & Control Letters

Research paper thumbnail of Interval observer-based methodology for passive fault tolerant control of linear parameter-varying systems

Transactions of the Institute of Measurement and Control, 2021

The paper deals with passive fault tolerant control for linear parameter varying systems subject ... more 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: see text] 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.

Research paper thumbnail of Interval Observer Design for Actuator Fault Estimation of Linear Parameter-Varying Systems

IFAC-PapersOnLine, 2018

This work is devoted to fault estimation of discrete-time Linear Parameter-Varying (LPV) systems ... more This work is devoted to fault estimation of discrete-time Linear Parameter-Varying (LPV) systems subject to actuator additive faults and external disturbances. Under the assumption that the measurement noises and the disturbances are unknown but bounded, an interval observer is designed, based on decoupling the fault effect, to compute a lower and upper bounds for the unmeasured state and the faults. Stability conditions are expressed in terms of matrices inequalities. A case study is used to illustrate the effectiveness of the proposed approach.

Research paper thumbnail of Actuator Fault Compensation in a Set-membership Framework for Linear Parameter-Varying Systems

IFAC-PapersOnLine, 2017

This paper presents an actuator fault compensation approach for a class of Linear Parameter-Varyi... more This paper presents an actuator fault compensation approach for a class of Linear Parameter-Varying (LPV) systems with noisy measurements. The proposed method is based on interval estimation assuming that the fault vector and the external disturbances are unknown but bounded. The main idea consists in designing a control law, based on a linear state feedback, to guarantee closed-loop stability. An additive control, based on fault bounds, is used to compensate the impact of actuator faults on system performances. The closed-loop stability of the robust fault compensation scheme is established in the Lyapunov sense. Finally, the theoretical results are illustrated using a numerical example.

Research paper thumbnail of Interval observer framework for fault-tolerant control of linear parameter-varying systems

International Journal of Control, 2017

This paper addresses the problem of passive Fault Tolerant Control (FTC) for Linear Parameter-Var... more This paper addresses the problem of passive Fault Tolerant Control (FTC) for Linear Parameter-Varying (LPV) systems subject to actuator faults. The FTC, based on a linear state feedback, is designed to compensate the impact of actuator faults on system performance by stabilizing the closed-loop system using interval observers. The design of interval observers is based on the discrete-time Luenberger observer structure, where uncertainties and faults with known bounds are considered. Sufficient conditions for the existence of the proposed observer are explicitly provided. Simulation results are presented to show the effectiveness of the proposed approach.

Research paper thumbnail of Interval observer design for Linear Parameter-Varying systems subject to component faults

2016 24th Mediterranean Conference on Control and Automation (MED), 2016

In this paper an interval observer for Linear Parameter-Varying (LPV) systems is proposed. The co... more In this paper an interval observer for Linear Parameter-Varying (LPV) systems is proposed. The considered systems are assumed to be subject to parameter uncertainties and component faults whose effect can be approximated by parameters deviations. Under some conditions, an interval observer with discrete-time Luenberger structure is developed to cope with uncertainties and faults ensuring guaranteed bounds on the estimated states and their stability. The interval observer design is based on assumption that the uncertainties and the faults magnitudes are considered as unknown but bounded. A numerical example shows the efficiency of the proposed technique.

Research paper thumbnail of Fault tolerant control in a set-membership framework

2016 European Control Conference (ECC), 2016

In this paper, a Passive Fault Tolerant Control (PFTC) strategy for Linear Time Invariant (LTI) s... more In this paper, a Passive Fault Tolerant Control (PFTC) strategy for Linear Time Invariant (LTI) systems subject to actuator faults is proposed. The idea of this PFTC method is to compute a control law to cope with additive actuator faults using interval observers. The considered system is assumed to be subject to bounded noises and disturbances without any additional assumptions. The FTC is implemented as a state linear feedback control and designed using interval observers techniques. A numerical example shows the efficiency of the proposed technique.