Pub Date : 2014-12-01DOI: 10.1109/STA.2014.7086688
D. Mzoughi, H. Allagui, A. Mami
This paper presents the development of a cell models for proton exchange membrane (PEM) fuel cell. The models have been implemented in MATLAB/SIMULINK and 20-sim environments. A comparative study was carried out in this manuscript between a Simulink and bond graph model of a 200-W stack (Electrochem Inc.) PEM cell, in order to understand its voltage behavior. After an overview of its operation, this paper proposes a PEM cell model supplied with pure hydrogen and oxygen. This model takes into account physico-chemical, electrochemical and thermal phenomena that can be found in a PEMFC. We propose a static model with dissociated electrodes which involves classical laws to describe the different phenomena in a stack. In essence, this model is directly implanted, firstly, under Matlab-Simulink, secondly under 20-sim software. The implementations are described. The given comparative study between the different modeling approaches is given to show the great advantages of the bond graph approach in the design process of fuel cell systems.
{"title":"A comparative study between a 20-sim and a Simulink single PEM cell model","authors":"D. Mzoughi, H. Allagui, A. Mami","doi":"10.1109/STA.2014.7086688","DOIUrl":"https://doi.org/10.1109/STA.2014.7086688","url":null,"abstract":"This paper presents the development of a cell models for proton exchange membrane (PEM) fuel cell. The models have been implemented in MATLAB/SIMULINK and 20-sim environments. A comparative study was carried out in this manuscript between a Simulink and bond graph model of a 200-W stack (Electrochem Inc.) PEM cell, in order to understand its voltage behavior. After an overview of its operation, this paper proposes a PEM cell model supplied with pure hydrogen and oxygen. This model takes into account physico-chemical, electrochemical and thermal phenomena that can be found in a PEMFC. We propose a static model with dissociated electrodes which involves classical laws to describe the different phenomena in a stack. In essence, this model is directly implanted, firstly, under Matlab-Simulink, secondly under 20-sim software. The implementations are described. The given comparative study between the different modeling approaches is given to show the great advantages of the bond graph approach in the design process of fuel cell systems.","PeriodicalId":125957,"journal":{"name":"2014 15th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"35 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":"114186874","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.2014.7086747
Lilia Zouari, Hafedh Abid, M. Abid
Flexible joint manipulators are widely used in industries. The harmonic drive is often token as rigid component in the mechanical arm control. Nevertheless, several studies have shown that the joint flexibility characteristic in manipulator seriously reduces the performance of whole system especially when including actuator dynamic. This paper proposes a back-stepping method to control flexible joint manipulator including the dynamic of actuator to obtain the desired trajectory with minimum vibration. The controller is achieved by the analysis of Lyapunov stability to guarantee the stability of the system. Backstepping controller has been treated for position control and an hysteresis controller has been developed for current control. Simulation results through simulink environment are necessary to show the effectiveness of the adopted controllers.
{"title":"Flexible joint manipulator based on backstepping controller","authors":"Lilia Zouari, Hafedh Abid, M. Abid","doi":"10.1109/STA.2014.7086747","DOIUrl":"https://doi.org/10.1109/STA.2014.7086747","url":null,"abstract":"Flexible joint manipulators are widely used in industries. The harmonic drive is often token as rigid component in the mechanical arm control. Nevertheless, several studies have shown that the joint flexibility characteristic in manipulator seriously reduces the performance of whole system especially when including actuator dynamic. This paper proposes a back-stepping method to control flexible joint manipulator including the dynamic of actuator to obtain the desired trajectory with minimum vibration. The controller is achieved by the analysis of Lyapunov stability to guarantee the stability of the system. Backstepping controller has been treated for position control and an hysteresis controller has been developed for current control. Simulation results through simulink environment are necessary to show the effectiveness of the adopted controllers.","PeriodicalId":125957,"journal":{"name":"2014 15th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"3 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":"126484133","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.2014.7086763
Abdelhamid Bounemeur, M. Chemachema, N. Essounbouli
This paper deals with indirect adaptive control using fuzzy systems for a class of uncertain SISO systems with unknown control gain sign. The uncertain nonlinearities of the systems are captured by fuzzy systems that have been proven to be universal approximators and the Nussbaum -type function is used to deal with the unknown control gain sign. The proposed control scheme completely overcomes the singularity problem that occurs in the indirect adaptive feedback linearizing control. Projection in the estimate parameters is not required and the stability analysis of the closed-loop system is performed using Lyapunov approach. Simulation results are provided to verify the effectiveness of the proposed design.
{"title":"Robust indirect adaptive fuzzy control using Nussbaum gain for a class of SISO nonlinear systems with unknown directions","authors":"Abdelhamid Bounemeur, M. Chemachema, N. Essounbouli","doi":"10.1109/STA.2014.7086763","DOIUrl":"https://doi.org/10.1109/STA.2014.7086763","url":null,"abstract":"This paper deals with indirect adaptive control using fuzzy systems for a class of uncertain SISO systems with unknown control gain sign. The uncertain nonlinearities of the systems are captured by fuzzy systems that have been proven to be universal approximators and the Nussbaum -type function is used to deal with the unknown control gain sign. The proposed control scheme completely overcomes the singularity problem that occurs in the indirect adaptive feedback linearizing control. Projection in the estimate parameters is not required and the stability analysis of the closed-loop system is performed using Lyapunov approach. Simulation results are provided to verify the effectiveness of the proposed design.","PeriodicalId":125957,"journal":{"name":"2014 15th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"48 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":"130165958","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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