Search results for: Joseph Haggege
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This paper deals with the design, modeling and control of a Tidal Stream Generator (TSG) system including a tidal turbine, a rotor shaft and a Doubly Fed Induction Generator (DFIG). Below high tidal speed the system is regulated so that for every tidal velocity reaches the maximum power. A rotational speed control based-Maximum Power Point Tracking (MPPT) for a TSG is investigated to provide the suitable...
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This paper is about modelling and simulating PWM power converters that are associated with wind turbine. As a first step, studies of power converters and Space Vector based Pulse Width Modulation (SVPWM) are presented. Thereafter, MATLAB/SIMULINK are used as a platform for the simulations and a SIMULINK model is presented in the paper. Lastly, a new Space Vector based Pulse Width Modulation control...
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Journal of Control, Automation and Electrical Systems > 2017 > 28 > 2 > 171-179
This paper examines the problem of designing a nonlinear state feedback controller (SFC) for Takagi–Sugeno discrete-time parametric uncertain systems via an iterative linear matrix inequalities (LMIs). The objective of this paper is to establish a novel framework of the SFC with conservatism reduction (less restrictive) results by introducing slack variables. These reduced conservative results are...
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In this paper, an advanced Computer Aided Design (CAD) methodology for the Process-In-the-Loop (PIL) co-simulation and rapid prototyping of model predictive controllers is proposed and successfully implemented using the NI CompactRIO-9082 RT target and a host PC. The developed software (SW) and hardware (HW) co-design platform is based on the Control Design and Simulation (CDSim) module of LabVIEW...
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The adequate use of ultrasound permits the measurement of carbon dioxide pressure in a two-phase flow fluid. The proposed method relies on the measurement of radial mixture velocities acquired from ultrasound data by Doppler effect. The gas pressure is calculated knowing the measured radial velocities using Drift flux model and Young-Laplace equations The modeling of system response consists on the...
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International Journal of Control, Automation and Systems > 2016 > 14 > 6 > 1607-1617
In this paper, a novel method for the digital two-Degrees-Of-Freedom (2DOF) controller design, called canonical RST structure, is proposed and successfully implemented based on a Multi-Objective Particle Swarm Optimization (MOPSO) approach. This is a polynomial control structure allowing independently the regulation and the tracking of discrete-time systems. An application to the variable speed control...
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This paper investigates the influence of a new Lyapunov function on the feasible area of stabilization for a discrete-time Takagi-Sugeno (T-S) fuzzy parametric uncertain systems. Using a new nonquadratic Lyapunov function, a new sufficient stabilization criterion is established in terms of linear matrix inequality (LMIs). The used approach combines together the states feedback with non-PDC control...
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In this paper, a new CAD methodology for the Processor-In-the-Loop (PIL) co-simulation and rapid prototyping of fuzzy supervised PID controllers is proposed and successfully implemented using the FPGA-based SPARTAN-3E board and a host PC. The developed software (SW) and hardware (HW) co-design platform is based on the Xilinx System Generator (XSG) interface of MATLAB/Simulink and the Xfuzzy/Xfvhdl...
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This paper deals with the design of observer for discrete time uncertain systems. This observer design present a direct extension from discrete observer for Takagi-Sugeno systems. In this work two non quadratic Lyapunov functions were used. This paper show that a little change in the Lyapunov function form can give a large feasible area of solutions in term of linear matrix inequality. In addition,...
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This paper deals with the development and simulation of a MATLAB/Simulink model of a Tidal Stream Converter (TSC) to be installed in the breakwater at the harbour of Mutriku on the Basque coast in Spain. The developed model is that of a three-bladed tidal turbine connected to a Doubly Fed Induction Generator (DFIG) for marine energy convertion. A Software-In-the-Loop (SIL) simulation of the established...
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This paper deals with the control law design with state feedback, and give a new approach of stabilization of discrete time Takagi-Sugeno uncertain fuzzy system. Using non quadratic Lyapunov function, the new condition of stabilization is used in terms of linear matrix inequalities LMIs. By using the simulation we verify the robustness of this approach.
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This paper try to give a new stabilization condition of continuous Takagi-Sugeno fuzzy models. Using non-quadratic Lyapunov function, the new condition of stabilization are used in terms of linear matrix inequalities LMIs. To verify the robustness of this new condition, a numeric example is used.
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In this paper, we propose a new method for digital RST controller design based on the Particle Swarm Optimization metaheuristic. It is a systematic RST synthesis and tuning procedure to deal with the complexity of the known classical poles placement methods. The case of an electric DC drive benchmark has been successfully obtained to illustrate the efficiency of the proposed PSO-based RST control...
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This paper deals with a new approach to minimize the gap between application development and the architecture synthesis, in the hardware/software embedded system design flow. Indeed, two intermediate models are proposed, the analytic Hmodel, and the MACBuilder environment. The first one allows embedded system modelling with a state space approach in order to determine the recursive equations, whereas,...
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International Journal of Control, Automation and Systems > 2011 > 9 > 2 > 258-266
In this paper, a new robust fixed-structure ℋ ∞ controller design based on the Particle Swarm Optimization (PSO) technique is proposed. The optimization-based structured synthesis problem is formulated and solved by a constrained PSO algorithm. In the proposed approach, the ℋ ∞ controller’s structure is selectable. PI and PID controller structures are especially adopted. The case study of an electrical...
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In this paper, a structured loop-shaping ℋ∞ controller design, using Particle Swarm Optimization (PSO) technique, is proposed. The case study of an electrical DC drive benchmark is envisaged to illustrate the efficiency and viability of the proposed control strategy. The optimization-based synthesis problem is formulated and solved by a constrained PSO algorithm. In the proposed approach, a PID controller's...
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Journal of Systems Science and Systems Engineering > 2005 > 14 > 4 > 417-435
This paper presents a new methodological approach for the synthesis of a neuro-fuzzy controller, using an on-line learning procedure. A simple algebraic formulation of a Sugeno fuzzy inference system that ensures a coherent universe of discourse, making easy its interpretation by a human being, is proposed and implemented in the case of the control of a bioreactor, which is considered as a complex...
