Pub Date : 2013-10-01DOI: 10.1109/ICOSC.2013.6750928
Markus Guldenschuh
The Filtered-x-Least-Mean-Square (FxLMS) is an efficient algorithm for active-noise-control-headphones. It relies on a correct model Ŝ of the secondary-path S which, in the case of headphones, is above all determined by the acoustic path from the loudspeaker to the error-microphone. If the headphones are abruptly lifted or put on, the phase of S changes more than 90° and the formerly correct model Ŝ will suddenly be wrong and the FxLMS might diverge. This paper presents three methods how the divergence of the FxLMS can be avoided. All three methods rely on laboratory measurements under different conditions from tight headphones to completely lifted headphones. First, it is shown how a stable secondary-path model can be derived from the phase information of the measurements. For the second and third method, two secondary-path models are implemented. One for the tight use case and one for the lifted headphones. The current state of the secondary-path is then detected either via an online noise-cancelling-analysis or via an infrasonic test-signal. Comparison with existing approaches shows the robust stability and efficiency of the proposed methods.
{"title":"Secondary-path models in adaptive-noise-control headphones","authors":"Markus Guldenschuh","doi":"10.1109/ICOSC.2013.6750928","DOIUrl":"https://doi.org/10.1109/ICOSC.2013.6750928","url":null,"abstract":"The Filtered-x-Least-Mean-Square (FxLMS) is an efficient algorithm for active-noise-control-headphones. It relies on a correct model Ŝ of the secondary-path S which, in the case of headphones, is above all determined by the acoustic path from the loudspeaker to the error-microphone. If the headphones are abruptly lifted or put on, the phase of S changes more than 90° and the formerly correct model Ŝ will suddenly be wrong and the FxLMS might diverge. This paper presents three methods how the divergence of the FxLMS can be avoided. All three methods rely on laboratory measurements under different conditions from tight headphones to completely lifted headphones. First, it is shown how a stable secondary-path model can be derived from the phase information of the measurements. For the second and third method, two secondary-path models are implemented. One for the tight use case and one for the lifted headphones. The current state of the secondary-path is then detected either via an online noise-cancelling-analysis or via an infrasonic test-signal. Comparison with existing approaches shows the robust stability and efficiency of the proposed methods.","PeriodicalId":199135,"journal":{"name":"3rd International Conference on Systems and Control","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128864761","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 : 2013-10-01DOI: 10.1109/ICOSC.2013.6750908
H. Boubertakh, S. Bencharef, S. Labiod
In this paper, we propose a Particle Swarm Optimization (PSO) method to design decentralized PID controllers. The proposed method is used for the stabilization of a quadrotor. That is, without loss of generality, four decentralized PD controllers are used in order to stabilize the quadrotor angles and height. A PSO algorithm is used to tune simultaneously the parameters of the four controllers against a square error (SE) cost function which quantifies the whole system performance compared to its desired behavior. Some simulation results are presented to show the efficiency of the method.
{"title":"PSO-based PID control design for the stabilization of a quadrotor","authors":"H. Boubertakh, S. Bencharef, S. Labiod","doi":"10.1109/ICOSC.2013.6750908","DOIUrl":"https://doi.org/10.1109/ICOSC.2013.6750908","url":null,"abstract":"In this paper, we propose a Particle Swarm Optimization (PSO) method to design decentralized PID controllers. The proposed method is used for the stabilization of a quadrotor. That is, without loss of generality, four decentralized PD controllers are used in order to stabilize the quadrotor angles and height. A PSO algorithm is used to tune simultaneously the parameters of the four controllers against a square error (SE) cost function which quantifies the whole system performance compared to its desired behavior. Some simulation results are presented to show the efficiency of the method.","PeriodicalId":199135,"journal":{"name":"3rd International Conference on Systems and Control","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125184753","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 : 2013-10-01DOI: 10.1109/ICOSC.2013.6750851
Mourad Loucif, A. Boumédiène, A. Mechernene
This paper presents the nonlinear control strategy for high performance doubly fed induction generator driven by wind turbine. In the DFIG topology the stator is connected direct to the grid while the rotor is connected to a back-to-back converter. A simple and general space vector PWM algorithm is proposed. First, we propose a modeling of wind turbine and DFIG in the dq reference frame. Next, a field oriented control for controlling independently the active and reactive power is implemented. This control strategy is developed and tested by synthesizing two types of controllers: a classic controller Proportional and Integral (PI) and a non linear type controller backstepping. Their performances are evaluated and compared in terms of power set point tracking, sensitivity to disturbance, robustness with respect to sudden changes in speed and robustness with respect to parameters variation.
{"title":"Backstepping control of double fed induction generator driven by wind turbine","authors":"Mourad Loucif, A. Boumédiène, A. Mechernene","doi":"10.1109/ICOSC.2013.6750851","DOIUrl":"https://doi.org/10.1109/ICOSC.2013.6750851","url":null,"abstract":"This paper presents the nonlinear control strategy for high performance doubly fed induction generator driven by wind turbine. In the DFIG topology the stator is connected direct to the grid while the rotor is connected to a back-to-back converter. A simple and general space vector PWM algorithm is proposed. First, we propose a modeling of wind turbine and DFIG in the dq reference frame. Next, a field oriented control for controlling independently the active and reactive power is implemented. This control strategy is developed and tested by synthesizing two types of controllers: a classic controller Proportional and Integral (PI) and a non linear type controller backstepping. Their performances are evaluated and compared in terms of power set point tracking, sensitivity to disturbance, robustness with respect to sudden changes in speed and robustness with respect to parameters variation.","PeriodicalId":199135,"journal":{"name":"3rd International Conference on Systems and Control","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126114167","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 : 2013-10-01DOI: 10.1109/ICOSC.2013.6750976
M. Dehbi, Z. Ahmed Foitih
In the field of Man-Machine interaction, gestural communication is expected to play a more and more important role due to its direct, natural character and its many potential uses. Our work has been chosen in the same context as robots control through gestural interfaces specifically using hand gesture. This article presents the different steps in the design of such a gestural servoing system, starting with hand gesture recognition through its interpretation in order to manipulate the Mentor robot (virtual and real), in real time. This gesture recognition system encompasses gesture acquisition, segmentation and identification using principal component analysis. Once the gesture has been recognized, it is operated to control the robot using two techniques: articular command and operational command.
{"title":"Designing a gestural interface for Mentor robot control","authors":"M. Dehbi, Z. Ahmed Foitih","doi":"10.1109/ICOSC.2013.6750976","DOIUrl":"https://doi.org/10.1109/ICOSC.2013.6750976","url":null,"abstract":"In the field of Man-Machine interaction, gestural communication is expected to play a more and more important role due to its direct, natural character and its many potential uses. Our work has been chosen in the same context as robots control through gestural interfaces specifically using hand gesture. This article presents the different steps in the design of such a gestural servoing system, starting with hand gesture recognition through its interpretation in order to manipulate the Mentor robot (virtual and real), in real time. This gesture recognition system encompasses gesture acquisition, segmentation and identification using principal component analysis. Once the gesture has been recognized, it is operated to control the robot using two techniques: articular command and operational command.","PeriodicalId":199135,"journal":{"name":"3rd International Conference on Systems and Control","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129454973","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 : 2013-10-01DOI: 10.1109/ICOSC.2013.6750932
M. E. Achhab
Controllability analysis and the determination of the reachable states for a nonlinear model of plug flow non-isothermal reactors with control constraints are investigated. The main results reduce this problem to the determination of the reachable states, by means of admissible controls, for the approximate linear systems. The approach is developed using a state space system framework and is based on the application of a result from coincidence of the topological degree theory. The paper also gives a procedure to generate an admissible control which steers the system to a reachable desired state.
{"title":"Controllability analysis of plug flow nonisothermal reactors using a nonlinear model","authors":"M. E. Achhab","doi":"10.1109/ICOSC.2013.6750932","DOIUrl":"https://doi.org/10.1109/ICOSC.2013.6750932","url":null,"abstract":"Controllability analysis and the determination of the reachable states for a nonlinear model of plug flow non-isothermal reactors with control constraints are investigated. The main results reduce this problem to the determination of the reachable states, by means of admissible controls, for the approximate linear systems. The approach is developed using a state space system framework and is based on the application of a result from coincidence of the topological degree theory. The paper also gives a procedure to generate an admissible control which steers the system to a reachable desired state.","PeriodicalId":199135,"journal":{"name":"3rd International Conference on Systems and Control","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130097106","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 : 2013-10-01DOI: 10.1109/ICOSC.2013.6750848
Roukia Abidat, S. Rebiai, L. Benterrouche
In this work, a one dimensional model of DBD discharge plasma at atmospheric pressure (APP) with helium working gas is presented. This model solves the continuity equations for charged species and the electron energy balance equation, coupled with Poisson's equation, by the finite element method; using COMSOL Multiphysics software. The simulation is performed with dielectric barrier discharge plasma created using peak-to-peak voltage of 1 kV, a discharge gap of 3 mm and a low frequency of 200 Hz. DBD plasma simulation results are given in terms of temporal variations of plasma electric characteristics such gas voltage, discharge current and charge/voltage Lissajous figure. The discharge behavior is studied as a function of external parameters such as the width of the discharge space and the nature of the dielectric through the value of its dielectric constant.
{"title":"Numerical simulation of atmospheric Dielectric Barrier Discharge in helium gas using COMSOL Multiphysics","authors":"Roukia Abidat, S. Rebiai, L. Benterrouche","doi":"10.1109/ICOSC.2013.6750848","DOIUrl":"https://doi.org/10.1109/ICOSC.2013.6750848","url":null,"abstract":"In this work, a one dimensional model of DBD discharge plasma at atmospheric pressure (APP) with helium working gas is presented. This model solves the continuity equations for charged species and the electron energy balance equation, coupled with Poisson's equation, by the finite element method; using COMSOL Multiphysics software. The simulation is performed with dielectric barrier discharge plasma created using peak-to-peak voltage of 1 kV, a discharge gap of 3 mm and a low frequency of 200 Hz. DBD plasma simulation results are given in terms of temporal variations of plasma electric characteristics such gas voltage, discharge current and charge/voltage Lissajous figure. The discharge behavior is studied as a function of external parameters such as the width of the discharge space and the nature of the dielectric through the value of its dielectric constant.","PeriodicalId":199135,"journal":{"name":"3rd International Conference on Systems and Control","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127595572","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 : 2013-10-01DOI: 10.1109/ICOSC.2013.6750882
M. Zoppi, C. Cervone, Gerardo Tiso, F. Vasca
Dry dual clutches are widely used in conventional and innovative automotive vehicles. The engagement control of dry dual clutches is a not easy task because of the synergic interaction of the two clutches in terms of their corresponding torque transmissibility characteristics. In this scenario the so-called software in the loop approach can represent a foundamental preliminary and driving step for hardware in the loop and on vehicle testing of new engagement strategies. This paper proposes a software in the loop model for dry dual clutch transmission control systems, developed by Fiat for new C635 transmission family and its future evolutions. The vehicle model includes the representation of the shift process for a six-speed dry-type dual clutch transmission. The transmission model is used to design a decoupling engagement controller of the dual clutch.
{"title":"Software in the loop model and decoupling control for dual clutch automotive transmissions","authors":"M. Zoppi, C. Cervone, Gerardo Tiso, F. Vasca","doi":"10.1109/ICOSC.2013.6750882","DOIUrl":"https://doi.org/10.1109/ICOSC.2013.6750882","url":null,"abstract":"Dry dual clutches are widely used in conventional and innovative automotive vehicles. The engagement control of dry dual clutches is a not easy task because of the synergic interaction of the two clutches in terms of their corresponding torque transmissibility characteristics. In this scenario the so-called software in the loop approach can represent a foundamental preliminary and driving step for hardware in the loop and on vehicle testing of new engagement strategies. This paper proposes a software in the loop model for dry dual clutch transmission control systems, developed by Fiat for new C635 transmission family and its future evolutions. The vehicle model includes the representation of the shift process for a six-speed dry-type dual clutch transmission. The transmission model is used to design a decoupling engagement controller of the dual clutch.","PeriodicalId":199135,"journal":{"name":"3rd International Conference on Systems and Control","volume":"195 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131413549","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 : 2013-10-01DOI: 10.1109/ICOSC.2013.6750919
A. Adamou-Mitiche, L. Mitiche, Saliha Younsi
Three recent methods for model reduction of linear discrete systems are presented. They are based on the impulse response gramian which contains information on the input-output behavior of the system. The corresponding low order approximants retain the first r Markov parameters and the first r×r elements of the impulse response gramian of the original system. To see the efficiency of each algorithm, these methods are implemented and several simulations are done. From an illustrative example, we can better appreciate their performances and the closeness of each reduced order model to original system.
{"title":"Markov parameters in the digital systems approximation problem","authors":"A. Adamou-Mitiche, L. Mitiche, Saliha Younsi","doi":"10.1109/ICOSC.2013.6750919","DOIUrl":"https://doi.org/10.1109/ICOSC.2013.6750919","url":null,"abstract":"Three recent methods for model reduction of linear discrete systems are presented. They are based on the impulse response gramian which contains information on the input-output behavior of the system. The corresponding low order approximants retain the first r Markov parameters and the first r×r elements of the impulse response gramian of the original system. To see the efficiency of each algorithm, these methods are implemented and several simulations are done. From an illustrative example, we can better appreciate their performances and the closeness of each reduced order model to original system.","PeriodicalId":199135,"journal":{"name":"3rd International Conference on Systems and Control","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133082568","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 : 2013-10-01DOI: 10.1109/ICOSC.2013.6750991
S. Stojanovic, D. Debeljkovic, T. Nestorović, D. Antić
In this paper, the class of linear discrete-time descriptor systems with time-varying exogenous disturbance are considered. Three sufficient conditions for the finite time boundedness and finite-time stability of linear discrete-time descriptor systems are presented. The stability conditions are reduced to a feasibility problem involving linear matrix inequalities. A numerical example has been provided to show the advantage of derived results.
{"title":"Finite-time boundedness analysis of a class of linear discrete descriptor systems: An LMI approach","authors":"S. Stojanovic, D. Debeljkovic, T. Nestorović, D. Antić","doi":"10.1109/ICOSC.2013.6750991","DOIUrl":"https://doi.org/10.1109/ICOSC.2013.6750991","url":null,"abstract":"In this paper, the class of linear discrete-time descriptor systems with time-varying exogenous disturbance are considered. Three sufficient conditions for the finite time boundedness and finite-time stability of linear discrete-time descriptor systems are presented. The stability conditions are reduced to a feasibility problem involving linear matrix inequalities. A numerical example has been provided to show the advantage of derived results.","PeriodicalId":199135,"journal":{"name":"3rd International Conference on Systems and Control","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129000164","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 : 2013-10-01DOI: 10.1109/ICOSC.2013.6750993
M. Benaouadj, M. Ayad, M. Becherif, A. Aboubou, M. Bahri, O. Akhrif
In this paper, an autonomous Wind/Photovoltaic (PV) hybrid power sources using lead-acid batteries and supercapacitors as storage elements is presented. The lead-acid batteries are used to compensate the power demand which PV and wind generators can't provide. Supercapacitors are employed to relieve the batteries of repeated charging and discharging ensuring longer hybrid source lifetime. The system is designed to supply a residential load. The exchanged power among different components is managed using a nonlinear control based on the flatness concept. Simulation results are presented and discussed for different wind speeds and solar illuminations.
{"title":"Energy flow control of Wind/PV/Batteries/Supercapacitors autonomous hybrid power sources using the flatness concept","authors":"M. Benaouadj, M. Ayad, M. Becherif, A. Aboubou, M. Bahri, O. Akhrif","doi":"10.1109/ICOSC.2013.6750993","DOIUrl":"https://doi.org/10.1109/ICOSC.2013.6750993","url":null,"abstract":"In this paper, an autonomous Wind/Photovoltaic (PV) hybrid power sources using lead-acid batteries and supercapacitors as storage elements is presented. The lead-acid batteries are used to compensate the power demand which PV and wind generators can't provide. Supercapacitors are employed to relieve the batteries of repeated charging and discharging ensuring longer hybrid source lifetime. The system is designed to supply a residential load. The exchanged power among different components is managed using a nonlinear control based on the flatness concept. Simulation results are presented and discussed for different wind speeds and solar illuminations.","PeriodicalId":199135,"journal":{"name":"3rd International Conference on Systems and Control","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128682453","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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