Pub Date : 2014-12-01DOI: 10.1109/STA.2014.7086741
M. Jouini, S. Dhahri, N. Amara, A. Sellami
This paper deals with the problem of Sliding Mode Control (SMC) design for a class of non linear system. Two different control designs are developed for a dynamic system Maxpid. The first type is the define of traditional Sliding Mode (SM) control. The second is the Higher Order Sliding Mode (HOSM) control. These two kinds have the same properties of robustness and precision. Note that the implementation drawback of the first type has a chattering phenomenon. The HOSM control is proposed to reduce the phenomenon. The simulation results obtained from the two types are finally compared in terms of good performances.
{"title":"Second order and classical sliding mode control of a MAXPID system: A comparison performance","authors":"M. Jouini, S. Dhahri, N. Amara, A. Sellami","doi":"10.1109/STA.2014.7086741","DOIUrl":"https://doi.org/10.1109/STA.2014.7086741","url":null,"abstract":"This paper deals with the problem of Sliding Mode Control (SMC) design for a class of non linear system. Two different control designs are developed for a dynamic system Maxpid. The first type is the define of traditional Sliding Mode (SM) control. The second is the Higher Order Sliding Mode (HOSM) control. These two kinds have the same properties of robustness and precision. Note that the implementation drawback of the first type has a chattering phenomenon. The HOSM control is proposed to reduce the phenomenon. The simulation results obtained from the two types are finally compared in terms of good performances.","PeriodicalId":125957,"journal":{"name":"2014 15th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"6 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127014482","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}
Pub Date : 2014-12-01DOI: 10.1109/STA.2014.7086810
S. Saadaoui, A. Torchani, T. Azizi, R. Gharbi
This work presents a study of the effect of developed hybrid halogen LED solar simulator. The developed system present a affordable solution for research lab's to analyze the solar cells efficiency. Two different light sources were studied and a combination solution was described. The developed system was tested with two different generation of solar cell. Current- Voltage (I-V) solar cell characterization was extracted and compared with different light sources. Incident monochromatic photon to electron conversion efficiency (IPCE) characteristics was determined in order to display the efficiency of the developed solar simulator. The developed system has noticeable improvement in both solar cells types, compared to the use of halogen lamp only.
{"title":"Hybrid halogen-LED sources as an affordable solar simulator to evaluate Dye Sensitized Solar Cells","authors":"S. Saadaoui, A. Torchani, T. Azizi, R. Gharbi","doi":"10.1109/STA.2014.7086810","DOIUrl":"https://doi.org/10.1109/STA.2014.7086810","url":null,"abstract":"This work presents a study of the effect of developed hybrid halogen LED solar simulator. The developed system present a affordable solution for research lab's to analyze the solar cells efficiency. Two different light sources were studied and a combination solution was described. The developed system was tested with two different generation of solar cell. Current- Voltage (I-V) solar cell characterization was extracted and compared with different light sources. Incident monochromatic photon to electron conversion efficiency (IPCE) characteristics was determined in order to display the efficiency of the developed solar simulator. The developed system has noticeable improvement in both solar cells types, compared to the use of halogen lamp only.","PeriodicalId":125957,"journal":{"name":"2014 15th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130601056","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}
Pub Date : 2014-12-01DOI: 10.1109/STA.2014.7086697
A. Medoued, A. Lebaroud, A. Belmeguenai, O. Boudebbouz, D. Sayad
The faults monitoring of the asynchronous machine using the stator current is of great interest, since this latter is an accessible and a measurable quantity. The spectral analysis of the stator current makes it possible to highlight the characteristic frequencies of the faults but in a broad frequency band depend on half of the sampling rate, which makes the online monitoring of the faults very difficult. In order to facilitate the exploitation of the relevant frequencies of the broken bar fault, we propose the extraction of the frequency components using the instantaneous frequency method. The theoretical bases of this method are presented and the results are validated on a testing bench comprising an asynchronous machine of 5.5 kw.
{"title":"Monitoring of the asynchronous machine faults using the signal approach","authors":"A. Medoued, A. Lebaroud, A. Belmeguenai, O. Boudebbouz, D. Sayad","doi":"10.1109/STA.2014.7086697","DOIUrl":"https://doi.org/10.1109/STA.2014.7086697","url":null,"abstract":"The faults monitoring of the asynchronous machine using the stator current is of great interest, since this latter is an accessible and a measurable quantity. The spectral analysis of the stator current makes it possible to highlight the characteristic frequencies of the faults but in a broad frequency band depend on half of the sampling rate, which makes the online monitoring of the faults very difficult. In order to facilitate the exploitation of the relevant frequencies of the broken bar fault, we propose the extraction of the frequency components using the instantaneous frequency method. The theoretical bases of this method are presented and the results are validated on a testing bench comprising an asynchronous machine of 5.5 kw.","PeriodicalId":125957,"journal":{"name":"2014 15th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131393562","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}
Pub Date : 2014-12-01DOI: 10.1109/STA.2014.7086708
A. Zahaf, B. Boutamina, S. Bououden, S. Filali
In this work, a model based T-S fuzzy predictive control LMI optimization is introduced. The aim of discrete T-S fuzzy predictive controller is to drive the state of the system to the original state where a stabilizing controller is ensured. The stability of the controlled systems is studied using non quadratic case of the Lyapunov function and adopting of Non-PDC controller. The stability is guaranteed based on the conditions expressed of terms of LMIs. The optimal solution has been obtained at each sampling time. The results are shows the effectiveness of this strategy.
{"title":"New approach of model based T-S fuzzy predictive control using LMI approach","authors":"A. Zahaf, B. Boutamina, S. Bououden, S. Filali","doi":"10.1109/STA.2014.7086708","DOIUrl":"https://doi.org/10.1109/STA.2014.7086708","url":null,"abstract":"In this work, a model based T-S fuzzy predictive control LMI optimization is introduced. The aim of discrete T-S fuzzy predictive controller is to drive the state of the system to the original state where a stabilizing controller is ensured. The stability of the controlled systems is studied using non quadratic case of the Lyapunov function and adopting of Non-PDC controller. The stability is guaranteed based on the conditions expressed of terms of LMIs. The optimal solution has been obtained at each sampling time. The results are shows the effectiveness of this strategy.","PeriodicalId":125957,"journal":{"name":"2014 15th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"253 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131936354","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}
Pub Date : 2014-12-01DOI: 10.1109/STA.2014.7086742
K. Belarbi, H. Boumaza, B. Boutamina
In this work, we introduce an approach to nonlinear model predictive based on the so-called state dependent Riccati equation, SDRE. In this approach, the model is first cast in a form similar to the linear state space representation. Then the algebraic Riccati equation is constructed based on a similarity with the linear quadratic regulator to obtain stable NMPC. The method requires the solution of the Riccati equation at each sampling period. Simulation results are quite encourageing.
{"title":"Nonlinear model predictive control based on state dependent Riccati equation","authors":"K. Belarbi, H. Boumaza, B. Boutamina","doi":"10.1109/STA.2014.7086742","DOIUrl":"https://doi.org/10.1109/STA.2014.7086742","url":null,"abstract":"In this work, we introduce an approach to nonlinear model predictive based on the so-called state dependent Riccati equation, SDRE. In this approach, the model is first cast in a form similar to the linear state space representation. Then the algebraic Riccati equation is constructed based on a similarity with the linear quadratic regulator to obtain stable NMPC. The method requires the solution of the Riccati equation at each sampling period. Simulation results are quite encourageing.","PeriodicalId":125957,"journal":{"name":"2014 15th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124136088","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}
Pub Date : 2014-12-01DOI: 10.1109/STA.2014.7086789
R. Herzi, H. Zairi, A. Gharsallah
In this paper an array based on an Antipodal Vivaldi Antenna (AVA) is presented. Two different types of arrays have been studied in order to obtain a small configuration with reduced mutual coupling. The first is 1×8 elements in the H-plane and the second is 8×1 elements with planar configuration. The antenna arrays are optimized to have a compact and small size, improved gain and reduced mutual coupling.
{"title":"Antipodal Vivaldi antenna array with reduced mutual coupling for UWB radar applications","authors":"R. Herzi, H. Zairi, A. Gharsallah","doi":"10.1109/STA.2014.7086789","DOIUrl":"https://doi.org/10.1109/STA.2014.7086789","url":null,"abstract":"In this paper an array based on an Antipodal Vivaldi Antenna (AVA) is presented. Two different types of arrays have been studied in order to obtain a small configuration with reduced mutual coupling. The first is 1×8 elements in the H-plane and the second is 8×1 elements with planar configuration. The antenna arrays are optimized to have a compact and small size, improved gain and reduced mutual coupling.","PeriodicalId":125957,"journal":{"name":"2014 15th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121392644","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}
Pub Date : 2014-12-01DOI: 10.1109/STA.2014.7086775
A. Hmamed, S. Kririm, F. Tadeo
The design of H∞ controllers for 2D discrete singular systems is studied here for Roesser models. More precisely, the problem addressed is the design of state feedback controllers that guarantee the acceptability, internal stability and causality of the closed-loop system, with a prescribed H∞ performance level. By using an adapted version of the bounded real lemma, a new linear matrix inequality condition is obtained for the existence of a desired H∞ controller. An illustrative example is presented to show the applicability of the proposed method.
{"title":"H∞ control of 2D discrete singular systems","authors":"A. Hmamed, S. Kririm, F. Tadeo","doi":"10.1109/STA.2014.7086775","DOIUrl":"https://doi.org/10.1109/STA.2014.7086775","url":null,"abstract":"The design of H∞ controllers for 2D discrete singular systems is studied here for Roesser models. More precisely, the problem addressed is the design of state feedback controllers that guarantee the acceptability, internal stability and causality of the closed-loop system, with a prescribed H∞ performance level. By using an adapted version of the bounded real lemma, a new linear matrix inequality condition is obtained for the existence of a desired H∞ controller. An illustrative example is presented to show the applicability of the proposed method.","PeriodicalId":125957,"journal":{"name":"2014 15th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129165310","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}
Pub Date : 2014-12-01DOI: 10.1109/STA.2014.7086700
Rihab Gam, A. Sakly
Suitable stabilization conditions obtained for continuous chaotic systems are generalized, in this paper, to discrete-time chaotic systems. The proposed approach, leading to these conditions for complete synchronization is based on the use of state feedback and aggregation techniques for stability studies associated with the arrow form matrix for system description. The results are successfully applied for two identical Hénon maps with different orders.
{"title":"Chaos synchronization of discrete-time identical Hénon systems with different orders based on vector norms approach","authors":"Rihab Gam, A. Sakly","doi":"10.1109/STA.2014.7086700","DOIUrl":"https://doi.org/10.1109/STA.2014.7086700","url":null,"abstract":"Suitable stabilization conditions obtained for continuous chaotic systems are generalized, in this paper, to discrete-time chaotic systems. The proposed approach, leading to these conditions for complete synchronization is based on the use of state feedback and aggregation techniques for stability studies associated with the arrow form matrix for system description. The results are successfully applied for two identical Hénon maps with different orders.","PeriodicalId":125957,"journal":{"name":"2014 15th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116906718","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}
Pub Date : 2014-12-01DOI: 10.1109/STA.2014.7086732
Amira Abdelkader, Moez Boussada, A. S. Nouri, H. Hammouri, K. Fiaty
In this paper, a nonlinear high gain observer is developed to reconstruct the full state of an olive oil waste esterification process. This operation is taking place in a semi-continuous stirred tank reactor. The plant model, as most of the chemical processes, presents a high level of non linearities and interconnections between states. Most of the works developed around such model are based on a canonical form of the model or in single input single output structure. We show, in this work, that it is possible to synthesis a high gain based full observer for a multi input multi output system and to ensure good applicability of a such observer. The results are validated on real measurements of the plant. The second part is devoted to performances' comparison between our observer and the well used observer for such nonlinear systems, the Extended Kalman Filter. The comparison shows that the high gain observer presents better results in precision and application limitations.
{"title":"A nonlinear high gain observer for an olive oil waste esterification in a continuous stirred tank reactor","authors":"Amira Abdelkader, Moez Boussada, A. S. Nouri, H. Hammouri, K. Fiaty","doi":"10.1109/STA.2014.7086732","DOIUrl":"https://doi.org/10.1109/STA.2014.7086732","url":null,"abstract":"In this paper, a nonlinear high gain observer is developed to reconstruct the full state of an olive oil waste esterification process. This operation is taking place in a semi-continuous stirred tank reactor. The plant model, as most of the chemical processes, presents a high level of non linearities and interconnections between states. Most of the works developed around such model are based on a canonical form of the model or in single input single output structure. We show, in this work, that it is possible to synthesis a high gain based full observer for a multi input multi output system and to ensure good applicability of a such observer. The results are validated on real measurements of the plant. The second part is devoted to performances' comparison between our observer and the well used observer for such nonlinear systems, the Extended Kalman Filter. The comparison shows that the high gain observer presents better results in precision and application limitations.","PeriodicalId":125957,"journal":{"name":"2014 15th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117252647","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}
Pub Date : 2014-12-01DOI: 10.1109/STA.2014.7086748
S. Chaouch, L. Abdou, L. Chrifi Alaoui
This paper deals with non linear backstepping control of induction motor drive without encoder. Non linear backstepping control principle is explained using system equation established in stationary reference frame. This control is based on Lyapunov theory to guarantee the convergence of the speed and flux tracking errors, and is optimized by genetic algorithm. This last model needs to obtain accurate information about the rotor flux and rotor speed, which are estimated by model reference adaptive system (MRAS) technique. The aim advantage of this scheme is that the machine control becomes more stable with an improvement of low speed performances where the torques capabilities are sufficiently developed. The simulation results show the improved drive characteristics and performances.
{"title":"Non linear backstepping control using genetic algorithm of induction motorwithout speed encoder","authors":"S. Chaouch, L. Abdou, L. Chrifi Alaoui","doi":"10.1109/STA.2014.7086748","DOIUrl":"https://doi.org/10.1109/STA.2014.7086748","url":null,"abstract":"This paper deals with non linear backstepping control of induction motor drive without encoder. Non linear backstepping control principle is explained using system equation established in stationary reference frame. This control is based on Lyapunov theory to guarantee the convergence of the speed and flux tracking errors, and is optimized by genetic algorithm. This last model needs to obtain accurate information about the rotor flux and rotor speed, which are estimated by model reference adaptive system (MRAS) technique. The aim advantage of this scheme is that the machine control becomes more stable with an improvement of low speed performances where the torques capabilities are sufficiently developed. The simulation results show the improved drive characteristics and performances.","PeriodicalId":125957,"journal":{"name":"2014 15th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"194 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116301990","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}
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