Ali Al Ibrahim

Military Technical College

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Cédric Chauvière

Centre National de la Recherche Scientifique

Pierre Bonnet

Centre National de la Recherche Scientifique

Hilmy Awad

Helwan University

Simon Dap

Laboratoire Plasma et Conversion d'Energie

Richard Clergereaux

Laboratoire Plasma et Conversion d'Energie

Romain Pascaud

Institut Superieur de l'Aeronautique et de l'Espace (ISAE-SUPAERO)

Sherif S. M. Ghoneim

Taif University

Olivier Pascal

Institut National Polytechnique de Toulouse

Ramy N. R. Ghaly

Ministry of Higher Education

Laurent Liard

Laboratoire Plasma et Conversion d'Energie

Cooperative Institutions

Centre National de la Recherche Scientifique

Université de Toulouse

Laboratoire Plasma et Conversion d'Energie

Institut National Polytechnique de Toulouse

ÉN

École Nationale Supérieure d'Électrotechnique, d'Électronique, d'Informatique, d'Hydraulique et des Télécommunications

Université Toulouse III - Paul Sabatier

Université Clermont Auvergne

Institut Pascal

Laboratoire de Physique des Plasmas

Institut de Mathématiques de Toulouse

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Research Field

Oriented Sm-doped CeO 2 thin films on biaxially textured Ni-W substrate produced by ultrasonic spray deposition

Materials Letters (2014)

Ali Al Ibrahim Alexander Y. Ilyushechkin Igor E. Agranovski

Texture (cosmology)

Deposition

10.1016/j.matlet.2014.08.085

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Citations (1)

Performance of insulators under variation of pollution, Inclined Angle, and Temperature based on the Design of Experiment

Results in Engineering (2024)

Ramy N. R. Ghaly Sherif S. M. Ghoneim Ali Al Ibrahim Waldemar Ziomek Prabhu Paramasivam

Variation (astronomy)

Light Pollution

10.1016/j.rineng.2024.103148

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Citations (2)

Active Electromagnetic Interference Control in Time Domain: Application to Software Correction of Defective Lossy Transmission-Line Networks

IEEE Transactions on Electromagnetic Compatibility (2019)

Ali Al Ibrahim Cédric Chauvière Pierre Bonnet

This paper introduces a generalized approach of the linear combination of configuration field (LCCF) method. The technique developed in this paper provides a way to identify the temporal profile of electromagnetic sources satisfying particular properties for a given target (fields, voltage, or current). Here, we focus on identifying voltage signals that would lead to a specified voltage over a time interval at some points of a network. To experimentally apply the same idea, we propose two possibilities to decrease the maximum frequencies of the voltage signals. The LCCF method is then applied to bring a software correction to a lossy transmission-line network presenting soft or hard defects.

Lossy compression

Line (geometry)

10.1109/temc.2019.2911035

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Citations (6)

Assembler Generated Binary Test Signals for Process Identification

IFAC Proceedings Volumes (1987)

I.A. Henderson Ali Al Ibrahim J. McGhee Dominik Sankowski

Identification

Microprocessor

Binary search algorithm

10.1016/s1474-6670(17)55833-4

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Citations (4)

Space-Time Plasma Steering Source: Synthesis and Outlooks

V. Mazieres Romain Pascaud Luc Stafford Pierre Bonnet Ali Al Ibrahim

The aim of this paper is to present the promising outlooks that lies ahead for the innovative plasma source we introduced recently. The idea of this source is to dynamically control the plasma location by changing the waveform of the transmitted signal to an overmoded cavity. It is then the behavior of the waves inside the cavity that dynamically control the plasma location, hence the name of Space-Time Plasma Steering Source. Since its introduction in 2019, we have produced three main papers, aimed at different scientific communities: applied physics, physics of plasma, signal processing and mathematical and numerical methods. An overview of these works is first presented in this paper. Then, the promising outlooks for this unusual plasma source are identified and classified into four domains, among which the most important and essential one being the unhooking of the plasmas from the initiators in order to control their location anywhere in the cavity. Several solutions for this "unhooking issue" are then proposed, the most straightforward one being the use of non-intrusive probes.

10.23919/ursigass51995.2021.9560460

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Citations (0)

Transient Electric Field Shaping With the Linear Combination of Configuration Field Method for Enhanced Spatial Control of Microwave Plasmas

IEEE Access (2020)

Valentin Mazières Ali Al Ibrahim Cédric Chauvière Pierre Bonnet Romain Pascaud

The demonstration of enhanced spatial control of nanosecond microwave plasmas generated by the time reversal plasma source is presented in this paper. This new microwave plasma source relies on the spatio-temporal control of the electric field inside an all-metal plasma reactor by modifying the waveform of a high power microwave signal. More specifically, it originally used the spatio-temporal focusing capabilities of the time reversal method to focus a high electric field in a small location. However, a parasitic microwave breakdown can still occur at sharp corners or wedges inside the cavity due to the local enhancement of the residual electric field during time reversal focusing. Thus, it is proposed to use the linear combination of configuration field method to improve field control inside the reactor. Its transient electric field shaping capabilities turn out to be a good candidate for the development of a low pressure microwave “plasma brush”.

Transient (computer programming)

Nanosecond

10.1109/access.2020.3025366

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Citations (5)

Software Correction of Defective Lossy Transmission Line Networks

Ali Al Ibrahim Cédric Chauvière Pierre Bonnet

In this paper, we pave the way to identify the temporal profile of electromagnetic (EM) sources satisfying particular properties for a given target voltage. For this purpose, we generalize the linear combination of configuration field (LCCF) method in the framework of identifying voltage signals that would generate a specified voltage over a time interval at distinct points of a transmission line (TL) network. In this paper, the LCCF method is applied to bring a voltage software correction to a lossy TL network distorted by an interfering external signal. With a view to consider experimental validations, constraints are then added to the LCCF method to decrease the maximum frequencies of the computed signals.

Lossy compression

Line (geometry)

SIGNAL (programming language)

10.1109/piers-spring46901.2019.9017375

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Citations (1)

IDENTIFICATION OF TEMPORAL SOURCES FOR SOFTWARE DEFECT CORRECTION IN TRANSMISSION LINES

HAL (Le Centre pour la Communication Scientifique Directe) (2018)

Ali Al Ibrahim Pierre Bonnet Cédric Chauvière

Identification

Source

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Citations (1)

Active Shaping of Voltage/Current in Transmission Lines - EMC/SI Applications

2022 International Conference on Electromagnetics in Advanced Applications (ICEAA) (2019)

Ali Al Ibrahim Cédric Chauvière Pierre Bonnet

In this paper, we present the general theory of the linear combination of configuration field (LCCF) method. This technique allows to determine the temporal profile of the source needed to generate a given signal at a specified time and location in a transmission-line network. We present two applications, one in the framework of signal integrity and another in the framework of electromagnetic compatibility problems. With a view to consider experimental tests, linear constraints are then added to improve the computed signal through reducing its high frequencies as well as its amplitudes.

Electromagnetic Compatibility

SIGNAL (programming language)

10.1109/iceaa.2019.8879093

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Citations (2)

Experimental Validations of Time-Domain Voltage/Current Control: Electrical Correction of Faulty Transmission-Line Networks

IEEE Transactions on Instrumentation and Measurement (2023)

Ali Al Ibrahim Cédric Chauvière Pierre Bonnet

This paper is dedicated to experimentally validating the Linear Combination of Configuration Field (LCCF) method in transmission-line networks. The LCCF is first modified to comply with some physical limitations encountered during experimentation, then tested to identify the temporal profile of voltage/current sources that would lead to specified voltage/current signals over a definite time interval at few points of a transmission-line network. In another experimental validation, when faults appear in some lines of these networks, the LCCF is also tested to bring an electrical correction that compensates for the effect of the potential faults regardless of the number, nature, and position. For this latter, soft and hard faults are considered. The LCCF method paves the way for the development of new instrumentation in generating and conditioning temporal signals.

Line (geometry)

10.1109/tim.2023.3304680

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Citations (0)