Olfa Boubaker
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Chaos in Physiological Control Systems: Health or Disease? Open
During the nineties, the Rössler’s have reported in their famous book “Chaos in Physiology,” that “physiology is the mother of Chaos.” Moreover, several researchers have proved that Chaos is a generic characteristic of systems in physiolog…
MPPT techniques for photovoltaic systems: a systematic review in current trends and recent advances in artificial intelligence Open
Over the past decades, solar photovoltaic (PV) energy has been the most valuable green energy. It is renowned for its sustainability, environmentally friendly nature, and minimal maintenance costs. Several methods aiming to extract the hig…
MPPT techniques for PV systems: A systematic review in current trends and recent advances in AI Open
Over the past decades, solar photovoltaic (PV) energy has been the most valuable green energy. It is renowned for its sustainability, environmentally friendly nature, and minimal maintenance costs. Several methods aiming to extract the hig…
MPPT techniques for PV systems: A comprehensive review of current trends and recent advances in AI Open
Over the past decades, solar photovoltaic (PV) energy has been the most valuable green energy. It is renowned for its sustainability, environmentally friendly nature, and minimal maintenance costs. Several methods aiming to extract the hig…
MPPT techniques for PV systems: A comprehensive review of current trends and recent advances in AI Open
Over the past decades, solar photovoltaic (PV) energy has been considered as the most valuable green energy. It is renowned for its sustainability, environmentally friendly nature and low maintenance costs. Several methods aiming to extrac…
View article: Design of Efficient Off-Grid Solar Photovoltaic Water Pumping System Based on Improved Fractional Open Circuit Voltage MPPT Technique
Design of Efficient Off-Grid Solar Photovoltaic Water Pumping System Based on Improved Fractional Open Circuit Voltage MPPT Technique Open
The main application of off-grid solar photovoltaic (SPV) systems is water extraction in rural areas where access to the grid is restricted. In this application, photovoltaic (PV) and pump system regulation are crucial to increase its over…
Dynamics and circuit simulation of a fractional-order hyperchaotic system Open
A hyperchaotic system with fractional terms and fractional-order derivatives is investigated in this paper. Simulations show that different attractors such as equilibrium point, limit cycle and hyperchaotic attractor can be generated by th…
Dataset on the COVID-19 Pandemic Situation in Tunisia with Application to SIR Model Open
April 9, 2020 marks 100 days since the first cases of coronavirus disease 2019 in China. In this crucial day with 1 436 198 confirmed infected cases in the world and 85 521 deaths, the Global Level of the Covid-19 pandemic was evaluated at…
Timeline of the Covid-19 Pandemic in Tunisia: A Useful Tool for Mathematical Modeling and Forecasting Open
Fig. 1. Timeline of the Covid-19 pandemic in Tunisia: Facts and measures. Fig.2. Tunisian measures for COVID-19. Fig.3. Data on COVID-19 in Tunisia from 02 March 2020-18 March 2020.
Real-Time Low-Cost Speed Monitoring and Control of Three-Phase Induction Motor via a Voltage/Frequency Control Approach Open
In this paper, a new design of a real-time low-cost speed monitoring and closed-loop control of the three-phase induction motor (IM) is proposed. The proposed solution is based on a voltage/frequency (V/F) control approach and a PI antiwin…
Data on COVID-19 Pandemic Situation in Tunisia Open
The Data of COVID-19 pandemic in Tunisia for the period March 02, 2020 to April 18, 2020 are collected from the website of three sources: the National Observatory of New and Emerging Diseases of the Tunisian Ministry of Health, the Coronav…
Situation in Tunisia: 100 days after the COVID-19 first case in China Open
These data describes the situation in Tunisia 100 days after the COVID-19 first cases in China. Data includes for the period 02 March 2020-12 April 2020 (1) the Total Coronavirus Cases in Tunisia (TCCT), (2) The Daily New Cases in Tunisia …
Fast terminal sliding mode tracking control of nonlinear uncertain mass–spring system with experimental verifications Open
In this article, a fast terminal sliding mode control technique is used for robust tracking control of a nonlinear uncertain mass–spring system in the existence of external perturbation. This system is considered as a benchmark problem in …
Full and Reduced-Order Unknown Input Observer Design for Linear Time-Delay Systems with Multiple Delays Open
In this work, we consider the design problem of a full-order and also reduced-order unknown input observers for a particular class of time-delay systems. Asymptotic stability and existence conditions for the designed observers are establis…
Advanced Topics in Modeling, Bifurcation Analysis, and Control Theory of Complex Systems Open
In the recent years, several complex systems have been investigated in nonlinear theory and have had a huge impact on the scientist researches.Due to the complexity of their design, analysis, and control, innovative insights had emerged in…
Circuit Design and Experimental Investigations for a Predator–Prey Model Open
In recent years, dynamical relationship between species in ecology has been intensively investigated and will continue to be one of the most significant themes. The dynamics of predator–prey’s systems are at the heart of these studies. Suc…
Chaos Synchronization via Linear Matrix Inequalities: A Comparative Analysis Open
In this paper, three chaos synchronization approaches using Linear Matrix Inequality (LMI) tools are evaluated and compared. The comparative analysis is supported by four examples of Piecewise affine (PWA) chaotic systems: The Chua’s origi…
Time‐Delay Systems: Modeling, Analysis, Estimation, Control, and Synchronization Open
The subject of time-delay systems is a rather old research topic dating back to the works of Euler-Bernoulli in the XVIII century.Effective results in this area were initiated in the late fifties of the twentieth century since the works of…
MIMO PI Controllers for LTI Systems with Multiple Time Delays Based on ILMIs and Sensitivity Functions Open
In this paper, a MIMO PI design procedure is proposed for linear time invariant (LTI) systems with multiple time delays. The controller tuning is established in two stages and guarantees performances for set‐point changes, disturbance vari…
Dynamic Analysis and Circuit Design of a Novel Hyperchaotic System with Fractional-Order Terms Open
A novel hyperchaotic system with fractional-order (FO) terms is designed. Its highly complex dynamics are investigated in terms of equilibrium points, Lyapunov spectrum, and attractor forms. It will be shown that the proposed system exhibi…
On new chaotic and hyperchaotic systems: A literature survey Open
This paper provides a thorough survey of new chaotic and hyperchaotic systems. An analysis of the dynamic behavior of these complex systems is presented by pointing out their originality and elementary characteristics. Recently, such syste…
An optimal jerk-stiffness controller for gait pattern generation in rough terrain Open
In this paper, an optimal jerk stiffness controller is proposed to produce stable gait pattern generation for bipedal robots in rough terrain. The optimal jerk controller is different from the point-to-point and via-Point conventional appr…
Full Order Unknown Inputs Observer for Multiple Time-Delay Systems Open
In this paper, a design of a full-order observer for linear time-invariant (LTI) multivariable systems with multiple time-delays and unknown inputs (UI) is proposed. The main idea is to reduce the problem of the unknown input observer (UIO…