Publications Internationales

Now showing 1 - 4 of 4

Optimal control design for uncertain aerial manipulator system based on an adaptive approach
(Inderscience Publishers, 2024) Riache, Samah; Kidouche, Madjid; Doghmane, Mohamed Zinelabidine; Tee, Kong Fah
In this paper, an optimal controller has been proposed for an aerial manipulator (AM) consisting of a quadrotor uncertain system with a two-degrees-of-freedom robotic arm. Wherein, the dynamics of this system have been derived based on Gauss's principle. The employment of this principal has permitted the pinpoint of the inner structure of the uncertain system and its possible moves. It has kept the AM in a very precise formation to analyse its dynamics and propose the suitable control. The proposed controller is designed using an adaptive approach of the non-singular terminal sliding mode technique. The main contribution is that the proposed approach guarantees both the good tracking of the desired trajectories in finite time and the chattering effect attenuation without overestimating the switching control gains. The design does not necessitate a priori knowledge of the upper limits of disturbances; the stability of the system has been established through the utilisation of Lyapunov theory. The simulation results have proved the effectiveness and robustness of the proposed optimal nonlinear terminal sliding mode technique for such an uncertain system in comparison to the sliding mode controller.
Real-Time Reduction of rotor position estimation error based on the stator flux Estimation-Combined method for sensorless control of PMSMs drives
(Praise Worthy Prize S.r.l, 2021) Aibeche, Abderrezak; Akroum, Hamza; Boudouda, Aimad; Kidouche, Madjid; Doghmane, Mohamed Zinelabidine
This paper presents the implantation and the performance improvement of real-time reduction of rotor position estimation error based on the stator flux estimation-combined method for sensorless control of PMSMs drives. Wherein, the proposed method is designed based on a simple algorithm for accurate estimation and robust control of quasi-exact stator flux and position/speed of PMSMs. A large-speed range of applications in sensorless control strategies is achieved by using the mathematical model of PMSM motor. The latter presents the main idea of the estimators’ structures design. They are generally composed of voltage and current models (VM and CM). However, the dynamic performances of these methods are influenced in the low and high-speed ranges, and they are sensitive to parameters variations. The estimators’ structures are dominated by the current model at the low-speed range, and by the voltage model at the high-speed range. The technique proposed in this study is the combination of the two preceding models; this provides performances’ improvement in the PMSM dynamics for a large speed variation with compensating estimation errors for the two separate methods (VM and CM). The main objective of this combined method is the drawback reduction for the separate use of VM and CM estimators. The algorithm principle is based on exploiting and combining the two estimators while measuring the stator voltages and the currents, in addition to estimating the rotor position and the speed. Furthermore, the performances of the proposed method have been tested and validated through real-time experiments by using dSPACE ds 1104 DSP board
A New Decomposition Strategy Approach Applied for a Multi-Stage Printing System Control Optimization
(IEEE, 2015) Doghmane, Mohamed Zinelabidine; Kidouche, M.; Habbi, H.; Bacetti, A.; Bellahcene, B.
Large scale dynamic systems are one of the challenges facing control engineer today. The design of controllers is an intractable problem when applied to problems of high dimension with intricate structure. Many strategies have been recently developed to deal with decomposition of complex systems, these strategies are based on the idea of subdividing the whole system into smaller subsystems less difficult in study than the original one. The aim of our paper is to apply the approach of multi-overlapping control design to multistage printing systems controller. Our principle objective in this paper is to use the advantages of multi-overlapping decomposition technique and its application in order to have a more robust controller of multistage printing system. This approach leads to computationally efficient design strategies that are well suited for large scale applications. Multistage printing system model is presented to illustrate the effectiveness of the proposed algorithm
Study on Corrosion Behavior of HLE steel solicited in (CO 2 ) % Selective Physicochemical medium
(2016) Belahcene, Brahim; Benmoussat, Abderrahim; Mansri, Ali; Doghmane, Mohamed Zinelabidine
n petroleum industry, conventional and unconventional reservoirs have to be controlled in order to decrease the effect of hazardous components on Oil and Gas facilities, as well as equipment completion, production tubing, transport pipeline, and storage tank. Herein, the study of real state of this effect using empirical method to determine sensible parameters that have huge influence on materials degradation. Therefore, the corrosion rate is estimated by application of a theoretical calculation based on physicochemical parameters and meta-field parameters, such as medium acidity, CO 2 partial pressure, thermodynamics parameters (P, T), and mechanical proprieties of studied materials. Moreover, scenarios application permitted us to assess corrosion risk

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