A. Ltaief, M. Farza, T. Ménard, T. Maatoug, M. M'Saad, Y. Koubaa
{"title":"High gain observer design for a class of MIMO non uniformly observable uncertain systems","authors":"A. Ltaief, M. Farza, T. Ménard, T. Maatoug, M. M'Saad, Y. Koubaa","doi":"10.1109/STA.2015.7505186","DOIUrl":"https://doi.org/10.1109/STA.2015.7505186","url":null,"abstract":"A high gain observer is proposed for a class of MIMO non uniformly observable systems including uncertainties. The gain of the proposed observer is issued from the resolution of a Lyapunov differential equation and its tuning can be achieved through the choice of a single scalar parameter. The observer design is made under an appropriate set of conditions given in terms of appropriate excitation. It is shown that in the absence of uncertainties, the observation error converges exponentially to zero. In the case where the uncertainties are bounded, this error can be made as small as desired by choosing high values of the observer design parameter. Simulation results are given for illustration purposes.","PeriodicalId":128530,"journal":{"name":"2015 16th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124777273","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Optimal placement of PV-distributed generation units in radial distribution system based on sensitivity approaches","authors":"Sirine Essallah, A. Bouallegue, A. Khedher","doi":"10.1109/STA.2015.7505109","DOIUrl":"https://doi.org/10.1109/STA.2015.7505109","url":null,"abstract":"Power utilities are facing major challenges as the demand of power system is growing exponentially. Therefore, the main attention is focused on Distributed Generation (DG) as they are providing many opportunities for the existing distribution system and becoming one of the key drivers of dealing with its issues. Voltage profile improvement, system loss reduction, reliability enhancement and electricity providing during peak load are the main challenges facing distribution systems. Thereby, the integration of renewable DGs such as Photovoltaic panels can be a good alternative to deal with these challenges. However, DGs integration benefits depend greatly on their placement and control strategy in the network. This work aims at selecting the most sensitive buses of the distribution network for DG units' allocation by means of three different sensitivity methods based on system losses reduction, voltage stability and voltage profile improvement. Advantages of integrating distributed generation are examined using voltage collapse index (L-index), loss sensitivity factor (LSF) and voltage performance index (VPI). These methods were executed on a typical IEEE-39 bus test distribution system using MATLAB tool box PSAT and the results were comparatively analyzed and discussed.","PeriodicalId":128530,"journal":{"name":"2015 16th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123543218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A new adaptive vector median rational hybrid filter for impulsive noise suppression","authors":"I. Abid, A. Boudabous, A. Ben Atitallah","doi":"10.1109/STA.2015.7505212","DOIUrl":"https://doi.org/10.1109/STA.2015.7505212","url":null,"abstract":"In this article, multichannel image processing using an adaptive approach is the subject of our study. So we have Proposed a new Adaptive Vector Median Rational Hybrid Filter (PAVMRHF). This filter is formed by two-layered filters which combine three Adaptive Vector Median Filters in the first layer and a Rational Function in the second. Simulations' results illustrate that this new proposed filter outperforms the classic Vector Median Rational Hybrid Filter (VMRHF) when images are contaminated with impulsive noise.","PeriodicalId":128530,"journal":{"name":"2015 16th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123637059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
O. Saadaoui, A. Khlaief, M. Abassi, A. Chaari, M. Boussak
{"title":"Position sensorless vector control of PMSM drives based on SMO","authors":"O. Saadaoui, A. Khlaief, M. Abassi, A. Chaari, M. Boussak","doi":"10.1109/STA.2015.7505148","DOIUrl":"https://doi.org/10.1109/STA.2015.7505148","url":null,"abstract":"In this document, an sensorless field oriented control (FOC) for PMSM utilizing the SMO is proposed. We have building a new sliding mode observer to estimate the rotor velocity/position from the back EMF, in which a continuous function (called sigmoid) is applied instead the sign method. The stability verification of our observer was made by the Lyapunov theorem. The effectiveness of sensorless FOC was validated by the results obtained in section 4. The simulation results obtained by using Matlab/Simulink program validate the robustness of the SMO under parameter variations and external disturbance.","PeriodicalId":128530,"journal":{"name":"2015 16th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"2013 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128013264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Modeling and simulation of DSPMSG power generator connected to grid","authors":"Kadri Yosra, Ben Ammar Mohsen, Haj Abdallah Hsan","doi":"10.1109/STA.2015.7505113","DOIUrl":"https://doi.org/10.1109/STA.2015.7505113","url":null,"abstract":"In order to present a new solar power generation system design, this paper describes a grid-connected generation model composed by a Dish Stirling (DS) engine, permanent magnet synchronous generator (PMSG), AC/DC converter, DC bus and DC/AC inverter. A detailed modeling is developed that considers all solar, thermal, mechanical and electrical parts of the system and implemented in MATLAB/Simulink. The developed model of the Dish Stirling engine design is examined at Sfax (34° 44' 26\" North, 10° 45' 37\" East) location in Tunisia. The dynamic performance of solar DSPMSG systems are designed for different systems disturbances such as radiation variation and temperature involving a change in the engine speed. The model simulation shows that, using a Voltage Source Converter (SGSC, NSC), voltage vector and PQ control strategies, gives a good response of the solar power system connected to the electrical grid. The different simulation results show that, the electrical power flow from the DS generator system feed into the electrical grid side. This model equations isable to be used for experimental future implementation work in ourresearch laboratory.","PeriodicalId":128530,"journal":{"name":"2015 16th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"145 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124665198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Naffouti, Y. Fougerolle, A. Sakly, F. Mériaudeau
{"title":"A more distinctive representation for 3D shape descriptors using principal component analysis","authors":"S. Naffouti, Y. Fougerolle, A. Sakly, F. Mériaudeau","doi":"10.1109/STA.2015.7505211","DOIUrl":"https://doi.org/10.1109/STA.2015.7505211","url":null,"abstract":"Many researchers have used the Heat Kernel Signature (or HKS) for characterizing points on non-rigid three-dimensional shapes and Classical Multidimensional Scaling (Classical MDS) method in object classification which we quote, in particular, the example of Jian Sun et al. (2009) [1]. However, in this paper, the main focuses on classification that we propose a concise and provably factorial method by invoking Principal Component Analysis (PCA) as a classifier to improve the scheme of 3D shape classification. To avoid losing or disordering information after extracting features from the mesh, PCA is used instead of the Classical MDS to discriminate-as much as possible-feature points for each 3D shape in several poses. To demonstrate the practical relevance of this scheme, we present, illustrate and compare several assessments of the two proposed methods for non-rigid three-dimensional shapes classification based on heat diffusion. Across a collection of shapes, our results analysis show that the proposed contribution outperforms the classification method without PCA.","PeriodicalId":128530,"journal":{"name":"2015 16th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129898574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Delay-independent stability criterion for switched T-S fuzzy systems with multiple delays","authors":"Ahmed Jaballi, A. Sakly, A. El Hajjaji","doi":"10.1109/STA.2015.7505135","DOIUrl":"https://doi.org/10.1109/STA.2015.7505135","url":null,"abstract":"This paper studies the problem of asymptotic stability for discrete-time switched T-S fuzzy systems with multiple delays. A novel algebraic criterion is proposed for the delay-independent asymptotic stability of the system, based on semipositivity and M-matrix properties. The major benefit of this technique is that it avoids the problem of computations complexity over LMIs constraints. Two numerical examples are presented to evince the efficiency of the proposed technique.","PeriodicalId":128530,"journal":{"name":"2015 16th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122589583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Fuel cell/supercapacitors combination in Uninterruptible Power Supply (UPS)","authors":"Imen Ben Amira, A. Lahyani, A. Guermazi","doi":"10.1109/STA.2015.7505231","DOIUrl":"https://doi.org/10.1109/STA.2015.7505231","url":null,"abstract":"Combining Fuel Cell (FC) system with high power density Supercapacitors (SCs) leads to a system with a high efficiency, high performance and long lifetime. This paper compares two configurations for FC/SCs combination in Uninterruptible Power Supply (UPS). The objective is to present the power split between Fuel Cell and Supercapacitors hybrid system by MATLAB/Simulink software. The main criteria studied are system performance, lifetime and UPS cost.","PeriodicalId":128530,"journal":{"name":"2015 16th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121338644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Parametric study on the dielectric properties of biological tissues","authors":"Amal Bouazizi, G. Zaibi, M. Samet, A. Kachouri","doi":"10.1109/STA.2015.7505138","DOIUrl":"https://doi.org/10.1109/STA.2015.7505138","url":null,"abstract":"A good comprehensive study of the electromagnetic properties of biological layers is important since we cannot discuss an implantable antenna design without investigating the interaction of electromagnetic radiation with the tissue. The human body is not an ideal medium for the transmission of radio waves which can be considered as a barrier degrading the performance of the transmission system that uses the human body as a propagation channel. This paper deals with some notions of electromagnetic characteristics of body tissues and their dependency to the frequency.","PeriodicalId":128530,"journal":{"name":"2015 16th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116481549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Predictive control for a DC motor-based photovoltaic pumping","authors":"S. Bououden, O. Hazil, I. Boulkaibet","doi":"10.1109/STA.2015.7505088","DOIUrl":"https://doi.org/10.1109/STA.2015.7505088","url":null,"abstract":"In this paper, a photovoltaic pumping system is controlled using a Model Predictive Control (MPC) approach. The non-linearity of controlled system, which is a photovoltaic (PV) water pumping system, was modelled using a Takagi-Sugeno(T-S) fuzzy model. The Buck converter of the controlled system is coupling with Photovoltaic (PV) generator to a DC motor pump system. This helps extracting and tracking the maximum available power. In this system, a DC-DC buck-boost converter controls the solar array operating point in order to track maximum power point (MPP).","PeriodicalId":128530,"journal":{"name":"2015 16th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129109916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}