N. Zitouni, R. Andoulsi, A. Sellami, A. Mami, A. Hssen
{"title":"Sliding mode control for non linear water treatment system","authors":"N. Zitouni, R. Andoulsi, A. Sellami, A. Mami, A. Hssen","doi":"10.1109/SSD.2010.5585546","DOIUrl":"https://doi.org/10.1109/SSD.2010.5585546","url":null,"abstract":"The ultraviolet irradiation presents a particular solution for the water disinfection, This paper presents a new state space model of a Ultraviolet (UV) lamp, used in a water disinfection pilot unit fed by a photovoltaic source. The non linear model relates the current and the conductivity of the low pressure discharge lamp used for water treatment was developed. The sliding mode control approach of a class of non linear systems subjected to control approach for the power UV lamp and power motor-driven pump is established. Reliable results are given to show the interest of the sliding mode control of complex physical systems.","PeriodicalId":432382,"journal":{"name":"2010 7th International Multi- Conference on Systems, Signals and Devices","volume":"96 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120918486","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":"Sliding mode observer for nonlinear mechanical systems subject to nonsmooth impacts","authors":"Mchiri Mohamed, Trabelsi Karim, B. Safya","doi":"10.1109/SSD.2010.5585565","DOIUrl":"https://doi.org/10.1109/SSD.2010.5585565","url":null,"abstract":"In control mechanical systems design, the velocity signal is not always available and may be corrupted by noise. It is therefore necessary to estimate it in order to construct the control law. This paper proposes a new sliding mode observer for nonlinear mechanical systems subject to nonsmooth impacts. The estimation of the velocity signal is derived from only position measurements. The proposed observer ensures an asymptotic velocity observation also in presence of non-smooth impacts. Excellent simulation results are included to show the effectiveness of the proposed approach.","PeriodicalId":432382,"journal":{"name":"2010 7th International Multi- Conference on Systems, Signals and Devices","volume":"9 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123300134","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}
A. Kurien, Karim D Djouani, B. V. van Wyk, Y. Hamam, A. Mellouk
{"title":"Using empirical mode decomposition for subscriber behaviour analysis in cellular networks in South Africa","authors":"A. Kurien, Karim D Djouani, B. V. van Wyk, Y. Hamam, A. Mellouk","doi":"10.1109/SSD.2010.5585575","DOIUrl":"https://doi.org/10.1109/SSD.2010.5585575","url":null,"abstract":"This paper looks at the potential benefit of using empirical mode decomposition (EMD) for the decomposition of time series data generated from a typical cellular network in South Africa. It is shown that a robust method for the extraction of features that correlate to subscriber behaviour can be conducted by decomposing time series tele-traffic data into finite set of components generated iteratively using the EMD approach. The extracted features are useful for the planning and estimation of future demand in wireless cellular networks especially in areas where subscriber socio-economic factors play a vital role in subscriber demand.","PeriodicalId":432382,"journal":{"name":"2010 7th International Multi- Conference on Systems, Signals and Devices","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125089934","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}
Mariam Baroudi, Mohamad Saad, W. Ghié, A. Kaddouri, H. Ziade
{"title":"Vibration controllability and observability of a single-link flexible manipulator","authors":"Mariam Baroudi, Mohamad Saad, W. Ghié, A. Kaddouri, H. Ziade","doi":"10.1109/SSD.2010.5585564","DOIUrl":"https://doi.org/10.1109/SSD.2010.5585564","url":null,"abstract":"This work presents a comparative study of two different control strategies for a flexible single-link robotic manipulator. The dynamic model of the flexible manipulator involves modeling the rotational base and the flexible link as rigid bodies using Lagrange's method. The resulting system has one rigid Degree-Of-Freedom (1 DOF). Two types of regulators are studied and discussed: the State-Feedback controller, and the Linear-Quadratic regulator (LQR). While the latter is obtained by resolving the Riccati equation, the state-feedback consists on poles placement. A simulation is performed on MATLAB (7.5.0)/SIMULINK (V7.0)®, and later on, experiments were achieved on the flexible beam Quanser module. Experimental results are presented and compared at the end of this paper.","PeriodicalId":432382,"journal":{"name":"2010 7th International Multi- Conference on Systems, Signals and Devices","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128525358","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":"Fuzzy optimal control of nonlinear systems","authors":"Emna Kolsi, N. Derbel","doi":"10.1109/SSD.2010.5585590","DOIUrl":"https://doi.org/10.1109/SSD.2010.5585590","url":null,"abstract":"This work is aimed at looking into the fuzzy optimal control of nonlinear systems detailing adopted mechanisms and approaches in order to be able to control these systems. First of all, the nonlinear systems have been modeled by Sugeno fuzzy systems. Then, three approaches have been considered. In the first one, a local approach to obtain fuzzy models has been applied. The second one is a global fuzzy optimal control procedure. The third one consists in the use of genetic algorithms to optimize parameters of fuzzy controllers. At the end of this work, a comparative study between considered approaches has been presented. It has been found that (i) the global approach gives better results, (ii) the optimized fuzzy controller by genetic algorithms presents a slight sub-optimality, and (iii) the local approach gives also a slight sub-optimality.","PeriodicalId":432382,"journal":{"name":"2010 7th International Multi- Conference on Systems, Signals and Devices","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116852605","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":"Strong simultaneous stabilization problem using Linear Matrix Inequalities","authors":"Abdul-Wahid A. Saif","doi":"10.1109/SSD.2010.5585509","DOIUrl":"https://doi.org/10.1109/SSD.2010.5585509","url":null,"abstract":"In this paper, the strong simultaneous stabilization problem for a collection of continoustime systems is considered. A sufficient condition for the existence of dynamic stable controller that stablize a single plant or simultaneously stabilizing a set of plants is obtained in terms of Linear Matrix Inequalities or Quadratic Matrix Inequalities. It is shown that these considered problems are solvable if a corresponding linear matrix inequality (s) are solvable. Furthermore, we derive a sufficient condition for the QMI problem to be solvable.","PeriodicalId":432382,"journal":{"name":"2010 7th International Multi- Conference on Systems, Signals and Devices","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121954157","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":"Classification of induction machine faults","authors":"T. Boukra, A. Lebaroud","doi":"10.1109/SSD.2010.5585571","DOIUrl":"https://doi.org/10.1109/SSD.2010.5585571","url":null,"abstract":"This paper presents the theoretical foundation of a method for classifying current waveform events that are related to a variety of induction machine faults. The method is composed of three sequential processes: feature extraction, feature selection and classification. The proposed feature extraction tool, time-frequency ambiguity plane with kernel techniques, is new to the fault diagnosis field. The essence of the feature extraction is to project a faulty machine signal onto a low dimension time-frequency representation (TFR), which is deliberately designed for maximizing the separability between classes. A distinct TFR is designed for each class. The feature selection seeks for the optimal number of features taking correlation into account. The classifier uses a quadratic discriminant function and mahalanobis distance as distance measure. The flexibility of this method allows an accurate classification independent from the level of load. This method is validated on a 5.5-kW induction motor test bench.","PeriodicalId":432382,"journal":{"name":"2010 7th International Multi- Conference on Systems, Signals and Devices","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128148291","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":"Hardware implementation of pulse mode RBFNN based edge detection system on virtex V platform","authors":"Amir Gargouri, M. Krid, D. Sellami Masmoudi","doi":"10.1109/SSD.2010.5585520","DOIUrl":"https://doi.org/10.1109/SSD.2010.5585520","url":null,"abstract":"In this paper, we have proposed a new architecture of RBFNN. Neural network efficiency in embedded systems offers the possibility of reconfiguration and the genericity of the solution. Indeed, the same integrated system can approximate any input-output function thanks to the parameters update on the chip. RBF neural networks constitute a subset of the neuronal networks, which has a great potential in reducing the size of the network. Pulse mode neural networks reduce significantly hardware resources by replacing the conventional huge multiplier by a simple frequency multiplier. As application, we approximate with the proposed RBF network, a Canny operator based edge detection, which is an important step in image processing. Acceptable edge detection approximation was done, with a mean generalization error of (4,604 %) on the Wang image database. Moreover, a design synthesis on FPGA virtex V platform was done, the results of implementation lead to an operating frequency of 445,295 MHz, which offers real time application performances.","PeriodicalId":432382,"journal":{"name":"2010 7th International Multi- Conference on Systems, Signals and Devices","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126523147","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}
Labid Ghodhbani, Bechir Rebhi, F. Kourda, M. Elleuch, Mabrouka Abidi
{"title":"Comparison among electronic start up methods for induction motors","authors":"Labid Ghodhbani, Bechir Rebhi, F. Kourda, M. Elleuch, Mabrouka Abidi","doi":"10.1109/SSD.2010.5585566","DOIUrl":"https://doi.org/10.1109/SSD.2010.5585566","url":null,"abstract":"This paper presents a useful comparison of performances during the start up of the induction machine by means of electronics starters. To feed the induction machine, two chosen circuits configurations utilize back-to-back connected series thyristor and 3-phase inverter. Some control strategies such as discrete frequency control, soft starter and field oriented control have been proposed to reduce current and improve torque. Simulation results, obtained from 4kw induction machine with these electronic methods, show an improvement of the performances in the starting period by reducing the current and increasing the torque first by using 3-phase inverter then by discrete frequency control (DFC) and finally with soft starter.","PeriodicalId":432382,"journal":{"name":"2010 7th International Multi- Conference on Systems, Signals and Devices","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125482633","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}
Alia A. Eletri, Esmail. S. EB.Salem, A. Zerek, Said A. Elgandus
{"title":"Effect of coefficient Quantization on the frequency response of an iir digital filter by using software","authors":"Alia A. Eletri, Esmail. S. EB.Salem, A. Zerek, Said A. Elgandus","doi":"10.1109/SSD.2010.5585581","DOIUrl":"https://doi.org/10.1109/SSD.2010.5585581","url":null,"abstract":"In the realization of IIR filters in hardware or in software on general purpose computer, the accuracy with which filter, coefficients can be specified is limited by the word length of the computer or the length of the register provided to store the coefficients. In this paper, we discussed the effects of Finite word length on the performance of digital filters and how minimizing these effects. IIR filter can be realized in a direct form, a cascade form and in a parallel form. To minimize the effect of coefficient quantization, a higher-order transfer function should never be realized as a single direct form structure, but realized as a cascade or parallel of second-order and first-order sections. Using MATLAB package software programs are developed for Analysis of coefficient Quantization effects in IIR digital filter and good results are obtained.","PeriodicalId":432382,"journal":{"name":"2010 7th International Multi- Conference on Systems, Signals and Devices","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127732510","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}