Publications

@conference{Benjemaa202167,

title = {Robust stabilization and Fault Tolerant Control for uncertain singular neutral variable time delay systems},

author = {R. Benjemaa and A. Elhsoumi and S. B. H. Ali Naoui and M. N. Abdelkrim},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85130531414\&doi=10.1109%2fSCC53769.2021.9768373\&partnerID=40\&md5=bc386a1a1d2225f001672972a5aef886},

doi = {10.1109/SCC53769.2021.9768373},

isbn = {9781665402705},

year  = {2021},

date = {2021-01-01},

journal = {2021 IEEE 2nd International Conference on Signal, Control and Communication, SCC 2021},

pages = {67-73},

publisher = {Institute of Electrical and Electronics Engineers Inc.},

abstract = {The main goal of this work is the robust stabilization and the design of fault tolerant control to achieve the desired performance in the closed loop system. The studied system is an uncertain singular neutral variable time-delay. First, H∞ controller is developed to guarantee robust stabilization of the closed loop system. Then, an adaptive observer is designed to achieve the fault and state vector estimation. Finally, simulation results are presented to prove the theoretical development. © 2021 IEEE.},

note = {cited By 2},

keywords = {Adaptive control systems; Closed loop systems; Fault tolerance; Robustness (control systems); Stabilization; Time delay; Timing circuits, Adaptive observer; Additive tolerant control; Closed-loop system; Faults tolerant controls; Neutral variable time delay system; Performance; Robust stabilization; Time-delay systems; Uncertain singular systems; Variable time delay, Delay control systems},

pubstate = {published},

tppubtype = {conference}

}

@conference{Atitallah2019280b,

title = {Tracking Control Design for Fractional Systems with Time Delay},

author = {Halima Atitallah and Asma Aribi and Mohamed Aoun},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85067126817\&doi=10.1109%2fSTA.2019.8717225\&partnerID=40\&md5=8533279ab21aee4982e90554b48e071f},

doi = {10.1109/STA.2019.8717225},

year  = {2019},

date = {2019-01-01},

journal = {19th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering, STA 2019},

pages = {280 \textendash 285},

abstract = {Fault tolerant control has been an important subject for many researchers. Nevertheless, there are few works dealing with fractional systems up to now and especially in presence of time delay. In this context, this paper proposes a tracking control design for fractional order system with time delay. The aim is to control the system in order to obtain the same performances of a time delay fractional reference model. The controller parameters are computed in both nominal and faulty functioning in case the state is available and unavailable for measurement. The efficiency of the proposed method is illustrated through a numerical example. © 2019 IEEE.},

note = {Cited by: 0},

keywords = {Automation, Controller parameter, Delay control systems, Fault tolerant control, Fractional systems, Fractional-order systems, Navigation, Numerical methods, Process control, Reference modeling, Time delay, Timing circuits, Tracking controls},

pubstate = {published},

tppubtype = {conference}

}

@conference{Atitallah2019280,

title = {Tracking Control Design for Fractional Systems with Time Delay},

author = {Halima Atitallah and Asma Aribi and Mohamed Aoun},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85067126817\&doi=10.1109%2fSTA.2019.8717225\&partnerID=40\&md5=8533279ab21aee4982e90554b48e071f},

doi = {10.1109/STA.2019.8717225},

year  = {2019},

date = {2019-01-01},

journal = {19th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering, STA 2019},

pages = {280 \textendash 285},

abstract = {Fault tolerant control has been an important subject for many researchers. Nevertheless, there are few works dealing with fractional systems up to now and especially in presence of time delay. In this context, this paper proposes a tracking control design for fractional order system with time delay. The aim is to control the system in order to obtain the same performances of a time delay fractional reference model. The controller parameters are computed in both nominal and faulty functioning in case the state is available and unavailable for measurement. The efficiency of the proposed method is illustrated through a numerical example. © 2019 IEEE.},

note = {Cited by: 0},

keywords = {Automation, Controller parameter, Delay control systems, Fault tolerant control, Fractional systems, Fractional-order systems, Navigation, Numerical methods, Process control, Reference modeling, Time delay, Timing circuits, Tracking controls},

pubstate = {published},

tppubtype = {conference}

}

@conference{Guefrachi201714563b,

title = {Tuning of Fractional Complex Order PID Controller},

author = {Ayadi Guefrachi and Slaheddine Najar and Messaoud Amairi and Mohamed Aoun},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85044862009\&doi=10.1016%2fj.ifacol.2017.08.2093\&partnerID=40\&md5=7d6e94566853a2d70c14eca6f8255d30},

doi = {10.1016/j.ifacol.2017.08.2093},

year  = {2017},

date = {2017-01-01},

volume = {50},

number = {1},

pages = {14563 \textendash 14568},

abstract = {This paper deals with a new structure of Fractional Complex Order Controller (FCOC) with the form PIDx+iy, in which x and y are the real and imaginary parts of the derivative complex order, respectively. A tuning method for the Controller based on numerical optimization is presented to ensure the controlled system robustness toward gain variations and noise. This can be obtained by fulfilling five design requirements. The proposed design method is applied for the control of a Second Order Plus Time Delay resonant system. The effectiveness of the FCOC design method is checked through frequency and time domain analysis. © 2017},

note = {Cited by: 22; All Open Access, Bronze Open Access},

keywords = {Calculations, Complex order controllers, Controlled system robustness, Controllers, Delay control systems, Design, Electric control equipment, Fractional calculus, Frequency and time domains, Frequency domain analysis, Gain variations, Numeric optimization, Numerical methods, Numerical optimizations, Optimization, PID controllers, Proportional control systems, Robust control, Three term control systems, Time domain analysis},

pubstate = {published},

tppubtype = {conference}

}

@conference{Atitallah2017284b,

title = {Diagnosis of time-delay fractional systems},

author = {Halima Atitallah and Asma Aribi and Mohamed Aoun},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85024400530\&doi=10.1109%2fSTA.2016.7952042\&partnerID=40\&md5=7df0719cec19ecdfbff3cbb2ec3bfeda},

doi = {10.1109/STA.2016.7952042},

year  = {2017},

date = {2017-01-01},

journal = {2016 17th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering, STA 2016 - Proceedings},

pages = {284 \textendash 292},

abstract = {In this paper, a model-based diagnosis method, called Luenberger diagnosis observer, recently developed for fractional order systems, is extended for time-delay fractional systems. A sufficient convergence condition of the fault indicator using Bilinear Matrix Inequalities is detailed. A numerical example illustrating the method's validity in detecting faults is finally presented. © 2016 IEEE.},

note = {Cited by: 3},

keywords = {Automation, Bilinear matrix inequality, Convergence conditions, Convergence of numerical methods, Delay control systems, Diagnosis, Fault detection, Fault indicators, Fractional systems, Fractional-order systems, Luenberger observers, Model based diagnosis, Numerical methods, Process control, residual, Time delay},

pubstate = {published},

tppubtype = {conference}

}

@conference{Atitallah2017284,

title = {Diagnosis of time-delay fractional systems},

author = {Halima Atitallah and Asma Aribi and Mohamed Aoun},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85024400530\&doi=10.1109%2fSTA.2016.7952042\&partnerID=40\&md5=7df0719cec19ecdfbff3cbb2ec3bfeda},

doi = {10.1109/STA.2016.7952042},

year  = {2017},

date = {2017-01-01},

journal = {2016 17th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering, STA 2016 - Proceedings},

pages = {284 \textendash 292},

abstract = {In this paper, a model-based diagnosis method, called Luenberger diagnosis observer, recently developed for fractional order systems, is extended for time-delay fractional systems. A sufficient convergence condition of the fault indicator using Bilinear Matrix Inequalities is detailed. A numerical example illustrating the method's validity in detecting faults is finally presented. © 2016 IEEE.},

note = {Cited by: 3},

keywords = {Automation, Bilinear matrix inequality, Convergence conditions, Convergence of numerical methods, Delay control systems, Diagnosis, Fault detection, Fault indicators, Fractional systems, Fractional-order systems, Luenberger observers, Model based diagnosis, Numerical methods, Process control, residual, Time delay},

pubstate = {published},

tppubtype = {conference}

}

@conference{Soltani2017747,

title = {Design of faults estimation for uncertain state space time delay systems},

author = {H. Soltani and S. Bel Hadj Ali Naoui and R. El Harabi and A. Aitouche and M. N. Abdelkrim},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85025168193\&doi=10.1109%2fSTA.2016.7952084\&partnerID=40\&md5=a5c0192cdca115eeb82fec4ef21d2f1f},

doi = {10.1109/STA.2016.7952084},

isbn = {9781509034079},

year  = {2017},

date = {2017-01-01},

journal = {2016 17th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering, STA 2016 - Proceedings},

pages = {747-752},

publisher = {Institute of Electrical and Electronics Engineers Inc.},

abstract = {Fault estimation is considered as one of the most essential problem in diagnosis domain. In this paper, a simultaneous state and fault estimation is treated for state time delay system. The fault estimation technique is based on H∞ optimization method to addressed the subject of robustness in the presence of disturbance and uncertainties. The fault estimation is made by using the Lyapunov Krasovskii functional. The condition of existent of a feasible solution from a convex problem is solved using Linear Matrix Inequality (LMI) optimization. The effectiveness of the designed methodology is verified based on a two-stage chemical reactor with delay recycle streams. © 2016 IEEE.},

note = {cited By 0},

keywords = {Automation; Linear matrix inequalities; Process control; Time delay; Timing circuits; Uncertain systems, Delay control systems, Essential problems; Fault estimation; Feasible solution; Linear matrix inequality optimizations; Lyapunov-Krasovskii; Lyapunov-Krasovskii functionals; Optimization method; Time-delay systems},

pubstate = {published},

tppubtype = {conference}

}

@conference{Saidi2014d,

title = {Fractional PI design for time delay systems based on min-max optimization},

author = {B. Saidi and M. Amairi and S. Najar and M. Aoun},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84918493100\&doi=10.1109%2fICFDA.2014.6967440\&partnerID=40\&md5=0ff2543768ac0713978d10873e94b207},

doi = {10.1109/ICFDA.2014.6967440},

year  = {2014},

date = {2014-01-01},

journal = {2014 International Conference on Fractional Differentiation and Its Applications, ICFDA 2014},

abstract = {This paper presents a new design method of a fractional order PI (FO-PI) for time delay systems based on the min-max numerical optimization. The proposed method uses a constrained optimization algorithm to determine the unknown parameters of the controller and has an objective to improve the transient response, stability margin, stability robustness and load disturbance rejection. A simulation example is presented to show the effectiveness of the proposed design method for a First Order Plus Dead Time system (FOPDT). © 2014 IEEE.},

note = {Cited by: 7},

keywords = {Calculations, Constrained optimization, Delay control systems, Design, Differentiation (calculus), Disturbance rejection, First order plus dead time, Fractional calculus, Frequency specifications, Load disturbance rejection, Min-max optimization, Multiobjective optimization, Numerical methods, Numerical optimizations, Robust controllers, System stability, Time delay, Time-delay systems, Timing circuits, Transient analysis},

pubstate = {published},

tppubtype = {conference}

}

@conference{Soltani2013178,

title = {Active fault tolerant control for uncertain system with state time-delay},

author = {H. Soltani and S. Bel Hadj Ali Naoui and R. El Harabi and M. N. Abdelkrim},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84893439976\&doi=10.1109%2fmmar.2013.6669902\&partnerID=40\&md5=02dfb878bf69e3403ea8cf738bdbb442},

doi = {10.1109/mmar.2013.6669902},

isbn = {9781467355063},

year  = {2013},

date = {2013-01-01},

journal = {2013 18th International Conference on Methods and Models in Automation and Robotics, MMAR 2013},

pages = {178-182},

publisher = {IEEE Computer Society},

abstract = {An active control law design for uncertain linear systems with state time-delay is addressed in this paper, in order to guarantee dynamic performances and compensate fault effects. First, the fault tolerant control strategy is designed based on Frobenius norm by minimizing the distance between the closed-loop model of the faulty system and a reference one. Therefore, stability issue is ensured via the Modified Pseudo-Inverse Method (MPIM). Finally, simulation tests on a two stage chemical reactor train with delay recycle streams illustrate the effectiveness of the proposed control approach. © 2013 West Pomeranian University of Technology.},

note = {cited By 6},

keywords = {Active fault tolerant control; Closed loop models; Dynamic performance; Fault tolerant control; Modified pseudo-inverted method; Pseudo-inverse method; Uncertain linear system; Uncertain time-delay system, Control theory; Convergence of numerical methods; Fault tolerance; Inverse problems; Linear systems; Robotics; Time delay; Timing circuits; Uncertain systems, Delay control systems},

pubstate = {published},

tppubtype = {conference}

}