Pub Date : 2014-12-01DOI: 10.1109/STA.2014.7086671
T. Bentrcia, F. Djeffal, D. Arar, M. Meguellati
The use of lower band gap materials such as SiGe for the DG MOSFET channel is of paramount importance given their compatibility with the process developed for pure Silicon devices. Furthermore, the increased electrons mobility in SiGe material has a positive effect on both drain current and transconductance. However, band gap narrowing due to Ge mole fraction increasing channel is a crucial obstacle that leads to electrical performance degradation. Thus, we present in this paper a novel graded doping channel-based approach to enhance the device reliability. Based on Atlas 2-D simulation of the nanoscale SiGe Double Gate MOSFET including the interface defects near the drain side, we develop numerical models to explain the impact of several doping profile on the immunity performance of the nanoscale transistor against the interface traps density. In this context, subthreshold characteristics of the proposed design (threshold voltage, swing factor and gate current) are investigated and evaluated with respect to the conventional uniform doping profile DG MOSFET characteristics.
{"title":"Numerical investigation of nanoscale SiGe DG MOSFET with graded doping channel for improving reliability behavior","authors":"T. Bentrcia, F. Djeffal, D. Arar, M. Meguellati","doi":"10.1109/STA.2014.7086671","DOIUrl":"https://doi.org/10.1109/STA.2014.7086671","url":null,"abstract":"The use of lower band gap materials such as SiGe for the DG MOSFET channel is of paramount importance given their compatibility with the process developed for pure Silicon devices. Furthermore, the increased electrons mobility in SiGe material has a positive effect on both drain current and transconductance. However, band gap narrowing due to Ge mole fraction increasing channel is a crucial obstacle that leads to electrical performance degradation. Thus, we present in this paper a novel graded doping channel-based approach to enhance the device reliability. Based on Atlas 2-D simulation of the nanoscale SiGe Double Gate MOSFET including the interface defects near the drain side, we develop numerical models to explain the impact of several doping profile on the immunity performance of the nanoscale transistor against the interface traps density. In this context, subthreshold characteristics of the proposed design (threshold voltage, swing factor and gate current) are investigated and evaluated with respect to the conventional uniform doping profile DG MOSFET characteristics.","PeriodicalId":125957,"journal":{"name":"2014 15th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"53 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":"134562508","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.2014.7086665
A. Rebai, Kamel GUESMI, D. Gozim, B. Hemici
This paper deals with the identification of the hysteresis property existing in piezoelectric actuators (PEA). In this paper, a fractional order model is used with the Recursive Least Squares (RLS) algorithm extended to fractional order models. The proposed approach is validated through numerical simulations and a comparison study is carried out to evaluate its performances.
{"title":"Identification of the PEA hysteresis property using a fractional order model","authors":"A. Rebai, Kamel GUESMI, D. Gozim, B. Hemici","doi":"10.1109/STA.2014.7086665","DOIUrl":"https://doi.org/10.1109/STA.2014.7086665","url":null,"abstract":"This paper deals with the identification of the hysteresis property existing in piezoelectric actuators (PEA). In this paper, a fractional order model is used with the Recursive Least Squares (RLS) algorithm extended to fractional order models. The proposed approach is validated through numerical simulations and a comparison study is carried out to evaluate its performances.","PeriodicalId":125957,"journal":{"name":"2014 15th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"36 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":"123816128","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.2014.7086749
A. Bachtarzi, B. Boutamina, K. Belarbi
This paper describe a multivariable control of a boiler by sliding mode control. The manipulated variables are the input feed water, the fuel and the steam flow while the controlled variables are the water level, the pressure inside the drum and the output power. The results of simulation show that the controller gives good performance.
{"title":"Design of a sliding mode control on a complex system","authors":"A. Bachtarzi, B. Boutamina, K. Belarbi","doi":"10.1109/STA.2014.7086749","DOIUrl":"https://doi.org/10.1109/STA.2014.7086749","url":null,"abstract":"This paper describe a multivariable control of a boiler by sliding mode control. The manipulated variables are the input feed water, the fuel and the steam flow while the controlled variables are the water level, the pressure inside the drum and the output power. The results of simulation show that the controller gives good performance.","PeriodicalId":125957,"journal":{"name":"2014 15th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"12 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":"127715362","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.2014.7086764
Asma Atitallah, S. Bedoui, K. Abderrahim
An identification method is described for Wiener time delay systems. It consists in identifying in two-stage the parameters and the time delay: the estimation of the parameters is solved by applying a gradient algorithm and the time delay is identified by using a Variable Regression Estimation technique. Simulation results are presented to illustrate the performance of the proposed method.
{"title":"Time delay estimation for a class of block-oriented nonlinear models","authors":"Asma Atitallah, S. Bedoui, K. Abderrahim","doi":"10.1109/STA.2014.7086764","DOIUrl":"https://doi.org/10.1109/STA.2014.7086764","url":null,"abstract":"An identification method is described for Wiener time delay systems. It consists in identifying in two-stage the parameters and the time delay: the estimation of the parameters is solved by applying a gradient algorithm and the time delay is identified by using a Variable Regression Estimation technique. Simulation results are presented to illustrate the performance of the proposed method.","PeriodicalId":125957,"journal":{"name":"2014 15th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"29 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":"127739412","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.2014.7086743
A. Maddi, A. Guessoum, D. Berkani
In this paper, an approach to design a nonlinear Proportional-Integral-Derivative (PID) controller based on hyper-stability criteria is proposed. This approach improved the performances of conventional linear fixed-gain PID controller considerably, by incorporating a nonlinear gain in cascade with a conventional PID control structure. The controller parameters are designed under assumptions of a sector bounded nonlinear gain, to a proper choice that satisfies the inequality of Popov. Specifically, a control law is constructed by cascading an exponential base B function with a linear fixed-gain PID controller. This can be achieved by the proposed particular nonlinear gain k(e) as the hyperbolic cosine function obtained by a simple combination of particular solutions. Therefore, it's important to note that the method can guarantee an asymptotically stable error for a bounded non-linear gain. Finally, a numerical example is presented to show the applicability and performances of the proposed approach.
{"title":"Design of nonlinear PID controllers based on hyper-stability criteria","authors":"A. Maddi, A. Guessoum, D. Berkani","doi":"10.1109/STA.2014.7086743","DOIUrl":"https://doi.org/10.1109/STA.2014.7086743","url":null,"abstract":"In this paper, an approach to design a nonlinear Proportional-Integral-Derivative (PID) controller based on hyper-stability criteria is proposed. This approach improved the performances of conventional linear fixed-gain PID controller considerably, by incorporating a nonlinear gain in cascade with a conventional PID control structure. The controller parameters are designed under assumptions of a sector bounded nonlinear gain, to a proper choice that satisfies the inequality of Popov. Specifically, a control law is constructed by cascading an exponential base B function with a linear fixed-gain PID controller. This can be achieved by the proposed particular nonlinear gain k(e) as the hyperbolic cosine function obtained by a simple combination of particular solutions. Therefore, it's important to note that the method can guarantee an asymptotically stable error for a bounded non-linear gain. Finally, a numerical example is presented to show the applicability and performances of the proposed approach.","PeriodicalId":125957,"journal":{"name":"2014 15th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"49 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":"128057660","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.2014.7086762
M. Walid, Najar Slaheddine, Aoun Mohamed, Bouabdallah Lamjed
In the recent years, the control of Unmanned Aerial Vehicles (UAV) has become one of the most interesting field of research, especially for Vertical Take-Off and Landing vehicles (VTOL), due to the needs to such system, the simplicity of their construction and due to the important technological advances in control boards, sensors, communication tools, energy storage. In this paper, a mathematical model has been developed with Lagrange formalism and a control approach based on Proportional Derivative PD controller has been built and provided with numerical simulation in MATLAB/Simulink.
{"title":"Modeling and control of a quadrotor UAV","authors":"M. Walid, Najar Slaheddine, Aoun Mohamed, Bouabdallah Lamjed","doi":"10.1109/STA.2014.7086762","DOIUrl":"https://doi.org/10.1109/STA.2014.7086762","url":null,"abstract":"In the recent years, the control of Unmanned Aerial Vehicles (UAV) has become one of the most interesting field of research, especially for Vertical Take-Off and Landing vehicles (VTOL), due to the needs to such system, the simplicity of their construction and due to the important technological advances in control boards, sensors, communication tools, energy storage. In this paper, a mathematical model has been developed with Lagrange formalism and a control approach based on Proportional Derivative PD controller has been built and provided with numerical simulation in MATLAB/Simulink.","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":"130494275","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.2014.7086783
Mouhib Allaoui, Anis Messaoud, R. Ben Abdennour
This paper deals with the design of robust non-stationary sinusoidal unknown inputmultiobserver for discrete-time nonlinear systems described by decoupled state multimodel. The particularity of this work resides in the fact that it provides a simultaneous state and non-stationary sinusoidal unknown inputs estimations. A new robust strategy allowing the minimization of the non-stationary sinusoidal unknown inputs and disturbances impact on the state estimation error will be developed.
{"title":"Robust design of non-stationary sinusoidal unknown inputs multiobserver based on decoupled state multimodel","authors":"Mouhib Allaoui, Anis Messaoud, R. Ben Abdennour","doi":"10.1109/STA.2014.7086783","DOIUrl":"https://doi.org/10.1109/STA.2014.7086783","url":null,"abstract":"This paper deals with the design of robust non-stationary sinusoidal unknown inputmultiobserver for discrete-time nonlinear systems described by decoupled state multimodel. The particularity of this work resides in the fact that it provides a simultaneous state and non-stationary sinusoidal unknown inputs estimations. A new robust strategy allowing the minimization of the non-stationary sinusoidal unknown inputs and disturbances impact on the state estimation error will be developed.","PeriodicalId":125957,"journal":{"name":"2014 15th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"121 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":"115805421","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.2014.7086806
O. Saadaoui, A. Khlaief, A. Chaari, M. Boussak
This paper proposes a sensorless speed control strategy for a permanent-magnet synchronous motor (PMSM) based on a sliding-mode observer (SMO). In order to apply a sensorless PMSM control which is robust against parameter fluctuations and disturbances, a high-speed SMO is proposed, which estimates the rotor position and the angular velocity. The stability of the proposed SMO was verified using the Lyapunov method to determine the observer gain. At standstill, the type of sliding mode observer is not able to detect the rotor position. For this reason, we use the method of voltage pulses to detect it. The simulation results show the effectiveness of the observer with sliding mode. They are characterized by a very small estimation error for the various rotational speeds (high speed, low speed).
{"title":"A new approach rotor speed estimation for PMSM based on sliding mode observer","authors":"O. Saadaoui, A. Khlaief, A. Chaari, M. Boussak","doi":"10.1109/STA.2014.7086806","DOIUrl":"https://doi.org/10.1109/STA.2014.7086806","url":null,"abstract":"This paper proposes a sensorless speed control strategy for a permanent-magnet synchronous motor (PMSM) based on a sliding-mode observer (SMO). In order to apply a sensorless PMSM control which is robust against parameter fluctuations and disturbances, a high-speed SMO is proposed, which estimates the rotor position and the angular velocity. The stability of the proposed SMO was verified using the Lyapunov method to determine the observer gain. At standstill, the type of sliding mode observer is not able to detect the rotor position. For this reason, we use the method of voltage pulses to detect it. The simulation results show the effectiveness of the observer with sliding mode. They are characterized by a very small estimation error for the various rotational speeds (high speed, low speed).","PeriodicalId":125957,"journal":{"name":"2014 15th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"26 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":"130882121","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.2014.7086663
S. Bououden, O. Hazil, S. Filali, M. Chadli
In this paper we develop a model predictive control (MPC) approach for regulating DC-DC Boost converters. The proposed control strategy is implemented and tested using two models: an averaged non-linear model for control purposes and a switched Buck-Boost circuit model as the controlled plant. The main objective of the paper is to design a Fuzzy Predictive Control to achieve desired voltage output without increasing complexity of the hybrid model of DC-DC converter in various conditions. The proposed algorithm of fuzzy model predictive controller is done by simulation using MATLAB. Comparative analysis and results of FMPC and MPC control is observed.
{"title":"Modelling and model predictive control of a DC-DC Boost converter","authors":"S. Bououden, O. Hazil, S. Filali, M. Chadli","doi":"10.1109/STA.2014.7086663","DOIUrl":"https://doi.org/10.1109/STA.2014.7086663","url":null,"abstract":"In this paper we develop a model predictive control (MPC) approach for regulating DC-DC Boost converters. The proposed control strategy is implemented and tested using two models: an averaged non-linear model for control purposes and a switched Buck-Boost circuit model as the controlled plant. The main objective of the paper is to design a Fuzzy Predictive Control to achieve desired voltage output without increasing complexity of the hybrid model of DC-DC converter in various conditions. The proposed algorithm of fuzzy model predictive controller is done by simulation using MATLAB. Comparative analysis and results of FMPC and MPC control is observed.","PeriodicalId":125957,"journal":{"name":"2014 15th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"18 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":"116865268","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.2014.7086694
Anis Ladgham, A. Sakly, A. Mtibaa
This paper presents a novel optimal algorithm for MRI brain tumor recognition. To do this, we use the newly developed meta-heuristic MSFLA (Modified Shuffled Frog Leaping Algorithm). Otherwise, a suitable choice of the fitness function ensures faster time of research with greater chance of convergence to the optimal value. The calculation of the used fitness function is linked to the image. The image must be scanned to calculate this function. For this, this function assists to quickly discover the adequate area modeling the tumor. Computer simulation results illustrate the effectiveness of the developed algorithm.
{"title":"MRI brain tumor recognition using Modified Shuffled Frog Leaping Algorithm","authors":"Anis Ladgham, A. Sakly, A. Mtibaa","doi":"10.1109/STA.2014.7086694","DOIUrl":"https://doi.org/10.1109/STA.2014.7086694","url":null,"abstract":"This paper presents a novel optimal algorithm for MRI brain tumor recognition. To do this, we use the newly developed meta-heuristic MSFLA (Modified Shuffled Frog Leaping Algorithm). Otherwise, a suitable choice of the fitness function ensures faster time of research with greater chance of convergence to the optimal value. The calculation of the used fitness function is linked to the image. The image must be scanned to calculate this function. For this, this function assists to quickly discover the adequate area modeling the tumor. Computer simulation results illustrate the effectiveness of the developed algorithm.","PeriodicalId":125957,"journal":{"name":"2014 15th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"66 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":"121631643","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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