Génie Eléctriques
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Item Model reduction of MIMO systems(1991) Zabot, HakimOver the past few decades, considerable imprvements have been made in the approximation of high degree multivariable systems by low degree reduced models. The resulting reduced models are used to simplify the analysis and synthesis of complex systems as well as their modelling and implementation...Item A microprocessor-based multiplexed system for automotive industry(1991) Meghriche, KamalThere are many applications where modern control system are becoming more and more sophisticated with a resultant increase in the complexity of wiring interconnections. This complexity is due to the requirement of one or more conductors to connect the control panel to each specitified function. these connectors are to carry power, control and monitoring signals to remote locations…Item A microprocessor-based crane load state monitoring system(1991) Benazzouz, DjamelThe objective of this research work is to develop a microprocessor-based system to monitor the load stat and insure the safety of a mobile telescopic crane. The need for an automatic and intelligent system that determines the lifted lead, in replacement to the exiting design based on analog electronics, is to serve the national crane manufacturing company ENMTP-CPG, Ain-Smara, Algeria. The conventional microprocessor-based system use the searching technique( look-up tables) to read the allowed load stored in memory…Item Algorithms for the factorization of matrix polynomials(1992) Dahimene, AbdelhakimThe factorization (root finding) of scalar polynomials is an important tool of analysis and design for linear systems. This thesis is a part of an ongoing effort to generalize these tools to multivariable systems via the factorization of matrix polynimials. The main contribution of this thesis can be summarized as follows...Item A quasi-static analysis of MMIC transmission-line structures by the method of lines(1992) Issaoun, AmmarThe current trends in both Monolithic Microwave Integrated Circuits (MMIC's) and High frequency digital circuits (HFDC's) are toward lower dimensions, higher circuit densities and increasing complexity. The corresponding CAD tools should take into consideration some circuit parameters that are currently...Item Effect of frequency on the substrate current in MOS devices(1992) Benfdila, ArezkiItem Density distribution of mobile ions in the oxide of MOS structures(1992) Bentarzi, HamidThe present work aims to study the mobile ion distribution in the oxides of MOS structures. The subject is introduced with the necessary background concept of MOS structure dealing with various aspects of oxid and its charges. A review is then...Item Charge-extraction technique for studying the surface-states in MOS devices(1992) Bouderbala, RachidItem MS-dosshell formal specifications(1994) Taibi, MohammedThe purpose of this research is to formalize (ie, using formal methods) an already existing human computer interface (dosshell) so as to provide a case study to encourage further research in the domain. The use of formal method in the specification of user interfaces has gained an increasing need in software development in the late eighties. Formal specifications are mathematical models representing computer systems. The use of mathematiques in software as hardware system development increases the system's reliability. Testability, ease of maintenance and cost effectiveness…Item A model based formal specification of a medical expert system(1994) Azni, MohamedIn this thesis, the problem of the specification of the reasoning processes that are used in the development of the systems is investigated, and a specification model of a medical expert system is proposed. Traditionally, expert systems are developed by following an exploratory programming model of the software life-cycle. In this model of software development, the developer progresses towards the desired system by building an initial implementation, and gradually, refilining it into working prototypes,…Item Statistical smoothing methods for stationary random signals(1994) Boucheta, RachidItem Multi-dimensional quasi-static analysis of MIC's and MMIC's(1994) Affane, MahmoudMicrowave Integrated Circuits (MIC's) and High Frecquency Digital Circuits (HFDC's) have reached a high degree of complexity arising essentially from increasing integrations levels and the use of multilayer parallel and crossing microstrip interconnections as well as arbitrary shaped metalizations on different interfaces of isotropic and anisotropic dielectric substratesItem Computer aided medical training system(1994) Imache, RabahItem Hybrid-mode analysis of microwave and millimeter-wave structures of realistic configuration(1995) Ouadi, AbderrahmaneIn this research work, the rigorous hybrid-mode full-wave analysis is used for an accurate characterization of planar and quasi-planar microwave and millimeter-wave structures, required by the spectacular growth of microwave technology. the method of lines is used as a mathematical tool for solving the associated eigenvalue problems, for modeling the dispersive properties of the aforementioned structures. The frequency dependent characterization of general planar multilayer multiconductor waveguiding structures based on isotropic and/or anisotropic substrates, has been established by using directly field components or suitable hertzian potential functions formulation …Item On the irreducible realization of rational transfer function matrices(1995) Yaici, MalikaThe problem of finding the minimal realization of a given transfer function matrix has been studied by several authors. it is to determine state variable realizations with the minimum possible number of states. the irreducible realization is useful in analog and digital computer simulation or operational amplifier circuit synthesis of the transfer function. irreducible realizations are desirable for reasons of economy and sensitivity…Item Nonparametric approach to digital image restoration(1995) Fadli, Djamel EddineImage analysis is concerned with restoration and interpretation of images that have been contaminated by noise and possible some (nonlinear transformation). The purpose of our research work is to implemeent the statical nonparmetric methods to the restoration of noisy images which are charcterized by the range of possible values for the intensity function...Item Task partition based parallel design and implementation of the MSSM algorithm on network of transputers(1995) Cheref, MohamedThe present work is concerned with the parallel design and implementation of the multiple scale signal matching (MSSM) [26,38] algorithm on a transporter [7,10,25,40] network. The MSSM algorithm is based on a multichannel vision model [35], to establish the correspondence between two images with the allowance that one of them can be deformed elastically. The MSSM algorithm uses a process consisting of two stages: the filtering and the matching stages. This process is iterated following a coarse-to-fine regime of the vision channels [35] at which the matching process is performed…Item Stability analysis of the static kramer drive(1996) Kesraoui, MohamedThe steady state analysis of the conventional static Kramer drive using three different of models, namely the DC, AC and DQ models is developed in the first part of thesis. The aim is to arrive at a correct prediction of the basic steady state characteristics of the drive through correlation of results of the different models used. This is motivated by the fact that most of the published work done on stability analysis of this drives relied on a wrong DQ steady state models. A correct DQ steady state model is established…