Pub Date : 2011-06-20DOI: 10.1109/MED.2011.5983123
H. H. Nejad, D. Sauter, S. Aberkane, C. Aubrun
This paper deals with the problem of fault detection and isolation (FDI) of a networked control system (NCS). In this configuration a linear time invariant(LTI) system communicates with controller/FDI over a shared medium. The medium supports a limited number of simultaneous connections between sensors and FDI system. Furthermore, it is assumed that there is the random and unknown packet dropouts in the controller-to-actuator link. Objective is to find a strategy for residual signals generating which network effects are taken into account. In addition, by means of these residuals fault detection and isolation of system is possible. A set of structured residual based on parity relation approach is proposed. It guarantees robustness to system disturbances and packet dropout while each residual is designed to be sensitive to some sensor faults. The efficiency of the proposed approach will be illustrated with a simulation example.
{"title":"Fault detection and isolation in networked control systems with access constraints and packet dropouts","authors":"H. H. Nejad, D. Sauter, S. Aberkane, C. Aubrun","doi":"10.1109/MED.2011.5983123","DOIUrl":"https://doi.org/10.1109/MED.2011.5983123","url":null,"abstract":"This paper deals with the problem of fault detection and isolation (FDI) of a networked control system (NCS). In this configuration a linear time invariant(LTI) system communicates with controller/FDI over a shared medium. The medium supports a limited number of simultaneous connections between sensors and FDI system. Furthermore, it is assumed that there is the random and unknown packet dropouts in the controller-to-actuator link. Objective is to find a strategy for residual signals generating which network effects are taken into account. In addition, by means of these residuals fault detection and isolation of system is possible. A set of structured residual based on parity relation approach is proposed. It guarantees robustness to system disturbances and packet dropout while each residual is designed to be sensitive to some sensor faults. The efficiency of the proposed approach will be illustrated with a simulation example.","PeriodicalId":146203,"journal":{"name":"2011 19th Mediterranean Conference on Control & Automation (MED)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124371313","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 : 2011-06-20DOI: 10.1109/MED.2011.5983045
V. Bobál, P. Chalupa, M. Kubalcik, P. Dostál
The contribution is focused on a design of a control algorithm for a nonlinear servo system with disturbance rejection using adaptive control strategy. It is obvious that for a rejection of the measurable disturbance is a suitable control strategy based on polynomial approach. The regression (output error) models are used in the identification part, the parameter estimates of the process and disturbance models were computed using the least squares method extended by a directional (adaptive) forgetting. The controller synthesis is based on polynomial theory - pole assignment method. The designed controller was applied to a laboratory servo system Amira DR300 in real-time conditions.
{"title":"Adaptive control of nonlinear servo system with disturbance rejection","authors":"V. Bobál, P. Chalupa, M. Kubalcik, P. Dostál","doi":"10.1109/MED.2011.5983045","DOIUrl":"https://doi.org/10.1109/MED.2011.5983045","url":null,"abstract":"The contribution is focused on a design of a control algorithm for a nonlinear servo system with disturbance rejection using adaptive control strategy. It is obvious that for a rejection of the measurable disturbance is a suitable control strategy based on polynomial approach. The regression (output error) models are used in the identification part, the parameter estimates of the process and disturbance models were computed using the least squares method extended by a directional (adaptive) forgetting. The controller synthesis is based on polynomial theory - pole assignment method. The designed controller was applied to a laboratory servo system Amira DR300 in real-time conditions.","PeriodicalId":146203,"journal":{"name":"2011 19th Mediterranean Conference on Control & Automation (MED)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132118773","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 : 2011-06-20DOI: 10.1109/MED.2011.5983003
Márcio F. Braga, J. B. Machado, R.J.G.B. Campello, W. do Amaral
An improved approach to determine exact search directions for the optimization of Volterra models based on Generalized Orthonormal Bases of Functions (GOBF) is proposed. The proposed approach extends the work in [7], where a novel, exact technique for optimizing the GOBF parameters (poles) for Volterra models of any order was presented. The proposed extensions take place in two different ways: (i) the formulation here is derived in such a way that each multidimensional kernel of the model is decomposed into a set of independent orthonormal bases (rather than a single, common basis), each of which is parameterized by an individual set of poles intended for representing the dominant dynamic of the kernel along a particular dimension; and (ii) a novel, more computationally efficient method to analytically and recursively calculate the search directions (gradients) for the bases poles is derived. A simulated example is presented to illustrate the performance of the proposed approach. A comparison between the proposed method, which uses asymmetric kernels with multiple orthonormal bases, and the original method, which uses symmetric kernels with a single basis, is presented.
{"title":"Optimization of Volterra models with asymmetrical kernels based on generalized orthonormal functions","authors":"Márcio F. Braga, J. B. Machado, R.J.G.B. Campello, W. do Amaral","doi":"10.1109/MED.2011.5983003","DOIUrl":"https://doi.org/10.1109/MED.2011.5983003","url":null,"abstract":"An improved approach to determine exact search directions for the optimization of Volterra models based on Generalized Orthonormal Bases of Functions (GOBF) is proposed. The proposed approach extends the work in [7], where a novel, exact technique for optimizing the GOBF parameters (poles) for Volterra models of any order was presented. The proposed extensions take place in two different ways: (i) the formulation here is derived in such a way that each multidimensional kernel of the model is decomposed into a set of independent orthonormal bases (rather than a single, common basis), each of which is parameterized by an individual set of poles intended for representing the dominant dynamic of the kernel along a particular dimension; and (ii) a novel, more computationally efficient method to analytically and recursively calculate the search directions (gradients) for the bases poles is derived. A simulated example is presented to illustrate the performance of the proposed approach. A comparison between the proposed method, which uses asymmetric kernels with multiple orthonormal bases, and the original method, which uses symmetric kernels with a single basis, is presented.","PeriodicalId":146203,"journal":{"name":"2011 19th Mediterranean Conference on Control & Automation (MED)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132114555","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 : 2011-06-20DOI: 10.1109/MED.2011.5983132
Y. Stergiopoulos, A. Tzes
The article examines the distributed optimization problem in mobile heterogeneous sensor networks. Most coordination algorithms are designed based on geometric characteristics of the corresponding Voronoi cells of the nodes. However, these works consider networks where the sensing patterns of the nodes are identical. This article considers coordination of heterogeneous networks, where the sensing radii of the nodes differ, while the proposed deployment algorithm for area-coverage optimization is based on a modified Voronoi-like space partitioning scheme. The proposed control scheme is developed in a distributed manner, while the advantages of the proposed technique are validated via simulation studies.
{"title":"Coverage-oriented coordination of mobile heterogeneous networks","authors":"Y. Stergiopoulos, A. Tzes","doi":"10.1109/MED.2011.5983132","DOIUrl":"https://doi.org/10.1109/MED.2011.5983132","url":null,"abstract":"The article examines the distributed optimization problem in mobile heterogeneous sensor networks. Most coordination algorithms are designed based on geometric characteristics of the corresponding Voronoi cells of the nodes. However, these works consider networks where the sensing patterns of the nodes are identical. This article considers coordination of heterogeneous networks, where the sensing radii of the nodes differ, while the proposed deployment algorithm for area-coverage optimization is based on a modified Voronoi-like space partitioning scheme. The proposed control scheme is developed in a distributed manner, while the advantages of the proposed technique are validated via simulation studies.","PeriodicalId":146203,"journal":{"name":"2011 19th Mediterranean Conference on Control & Automation (MED)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133563187","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 : 2011-06-20DOI: 10.1109/MED.2011.5983001
G. Fusco, M. Russo
This paper presents the design of two decentralized state-feedback controllers to ensure system stability and voltage regulation in multimachine power systems. The power system is decomposed in n subsystems each of them contains a generation node. Two state-space models for each subsystem are proposed both presenting parameter uncertainties while the couplings between the others generators through the transmission lines are modeled as time functions. The controllers are sequentially designed and counteract the effects of model input disturbances. The proposed design is simple to apply and does not require to solve difficult equations. Numerical results obtained on 2 machines power system test show the performance exhibit by the designed controllers in presence of severe contingencies.
{"title":"A straightforward design of decentralized controllers for multimachine power systems","authors":"G. Fusco, M. Russo","doi":"10.1109/MED.2011.5983001","DOIUrl":"https://doi.org/10.1109/MED.2011.5983001","url":null,"abstract":"This paper presents the design of two decentralized state-feedback controllers to ensure system stability and voltage regulation in multimachine power systems. The power system is decomposed in n subsystems each of them contains a generation node. Two state-space models for each subsystem are proposed both presenting parameter uncertainties while the couplings between the others generators through the transmission lines are modeled as time functions. The controllers are sequentially designed and counteract the effects of model input disturbances. The proposed design is simple to apply and does not require to solve difficult equations. Numerical results obtained on 2 machines power system test show the performance exhibit by the designed controllers in presence of severe contingencies.","PeriodicalId":146203,"journal":{"name":"2011 19th Mediterranean Conference on Control & Automation (MED)","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117268102","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 : 2011-06-20DOI: 10.1109/MED.2011.5983219
T. Giotis, H. E. Psillakis, Agapi Panagiotidou, Nikolina Chatzidamianou, M. Christodoulou
In this paper a RISE (Robust Integral of the Sign Error) observer approach is used for estimating the concentrations of the proteins that participate in the reactions of a biological system. The system under study is the Epidermal Growth Factor Receptor (EGFR) Signaling Pathway. The EGFR family is directly related with diseases such as multiple sclerosis or Alzheimer and its members are important in basic research and drug development. The RISE observer provides estimates that rapidly converge asymptotically to the system's states and their derivatives. Simulation studies verify the effectiveness of the proposed approach.
本文采用符号误差鲁棒积分(Robust Integral of the Sign Error)观测器方法来估计参与生物系统反应的蛋白质的浓度。所研究的系统是表皮生长因子受体(EGFR)信号通路。EGFR家族与多发性硬化症或阿尔茨海默症等疾病直接相关，其成员在基础研究和药物开发中很重要。RISE观测器提供了快速渐近收敛到系统状态及其导数的估计。仿真研究验证了该方法的有效性。
{"title":"EGFR Signaling Pathway estimation using a RISE-based asymptotic observer","authors":"T. Giotis, H. E. Psillakis, Agapi Panagiotidou, Nikolina Chatzidamianou, M. Christodoulou","doi":"10.1109/MED.2011.5983219","DOIUrl":"https://doi.org/10.1109/MED.2011.5983219","url":null,"abstract":"In this paper a RISE (Robust Integral of the Sign Error) observer approach is used for estimating the concentrations of the proteins that participate in the reactions of a biological system. The system under study is the Epidermal Growth Factor Receptor (EGFR) Signaling Pathway. The EGFR family is directly related with diseases such as multiple sclerosis or Alzheimer and its members are important in basic research and drug development. The RISE observer provides estimates that rapidly converge asymptotically to the system's states and their derivatives. Simulation studies verify the effectiveness of the proposed approach.","PeriodicalId":146203,"journal":{"name":"2011 19th Mediterranean Conference on Control & Automation (MED)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121368767","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 : 2011-06-20DOI: 10.1109/MED.2011.5983043
J. Ghommam, Yassine Bouterra, F. Mnif, G. Poisson
This paper considers the cooperative control problem of networked class of underactuated systems. We propose a new set up for synchronization of this type of systems based on the use of passivity as a design tool to solve the problem in hand. First the underactuated system is transformed to a class of nonlinear system with chain structure using a suitable non-linear static feedback. The cooperative control is designed using a combination of the standard backstepping procedure and the passivity theory by which a synchronizing outputs are constructed recursively then shared within the group. The proposed design technique is based on strongly connected digraph communication structures. Numerical simulations are carried out to illustrate the effectiveness of the proposed approach.
{"title":"Distributed backstepping control for synchronization of networked class of underactuated systems: A passivity approach","authors":"J. Ghommam, Yassine Bouterra, F. Mnif, G. Poisson","doi":"10.1109/MED.2011.5983043","DOIUrl":"https://doi.org/10.1109/MED.2011.5983043","url":null,"abstract":"This paper considers the cooperative control problem of networked class of underactuated systems. We propose a new set up for synchronization of this type of systems based on the use of passivity as a design tool to solve the problem in hand. First the underactuated system is transformed to a class of nonlinear system with chain structure using a suitable non-linear static feedback. The cooperative control is designed using a combination of the standard backstepping procedure and the passivity theory by which a synchronizing outputs are constructed recursively then shared within the group. The proposed design technique is based on strongly connected digraph communication structures. Numerical simulations are carried out to illustrate the effectiveness of the proposed approach.","PeriodicalId":146203,"journal":{"name":"2011 19th Mediterranean Conference on Control & Automation (MED)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124451084","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 : 2011-06-20DOI: 10.1109/MED.2011.5983154
Gianni Cario, A. Casavola, G. Franzé, Marco Lupia
This paper discusses an algorithm for driver drowsiness detection based on the theory of hybrid observers. A hybrid observer is designed on the basis of a driver's model whose parameters change according to the assumed drowsiness levels which are identified on-line from measurements of relevant vehicle signals. Simulations have been undertaken with Carsim to verify the capability of the proposed methodology to correctly identify on-line the current driver's drowsiness level.
{"title":"A hybrid observer approach for driver drowsiness detection","authors":"Gianni Cario, A. Casavola, G. Franzé, Marco Lupia","doi":"10.1109/MED.2011.5983154","DOIUrl":"https://doi.org/10.1109/MED.2011.5983154","url":null,"abstract":"This paper discusses an algorithm for driver drowsiness detection based on the theory of hybrid observers. A hybrid observer is designed on the basis of a driver's model whose parameters change according to the assumed drowsiness levels which are identified on-line from measurements of relevant vehicle signals. Simulations have been undertaken with Carsim to verify the capability of the proposed methodology to correctly identify on-line the current driver's drowsiness level.","PeriodicalId":146203,"journal":{"name":"2011 19th Mediterranean Conference on Control & Automation (MED)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123266771","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 : 2011-06-20DOI: 10.1109/MED.2011.5982997
R. Herzallah, D. Lowe
Theoretical developments on pinning control of complex dynamical networks have mainly focused on the deterministic versions of the model dynamics. However, the dynamical behavior of most real networks is often affected by stochastic noise components. In this paper the pinning control of a stochastic version of the coupled map lattice network with spatiotemporal characteristics is studied. The control of these complex dynamical networks have functional uncertainty which should be considered when calculating stabilizing control signals. Two feedback control methods are considered: the conventional feedback control and modified stochastic feedback control. It is shown that the typically-used conventional control method suffers from the ignorance of model uncertainty leading to a reduction and potentially a collapse in the control efficiency. Numerical verification of the main result is provided for a chaotic coupled map lattice network.
{"title":"Comparison between conventional and stochastic pinning control","authors":"R. Herzallah, D. Lowe","doi":"10.1109/MED.2011.5982997","DOIUrl":"https://doi.org/10.1109/MED.2011.5982997","url":null,"abstract":"Theoretical developments on pinning control of complex dynamical networks have mainly focused on the deterministic versions of the model dynamics. However, the dynamical behavior of most real networks is often affected by stochastic noise components. In this paper the pinning control of a stochastic version of the coupled map lattice network with spatiotemporal characteristics is studied. The control of these complex dynamical networks have functional uncertainty which should be considered when calculating stabilizing control signals. Two feedback control methods are considered: the conventional feedback control and modified stochastic feedback control. It is shown that the typically-used conventional control method suffers from the ignorance of model uncertainty leading to a reduction and potentially a collapse in the control efficiency. Numerical verification of the main result is provided for a chaotic coupled map lattice network.","PeriodicalId":146203,"journal":{"name":"2011 19th Mediterranean Conference on Control & Automation (MED)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123841373","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 : 2011-06-20DOI: 10.1109/MED.2011.5983157
I. Muntean, M. Stuckert, M. Abrudean
Being one of the most approached subjects in the field of chemical engineering, a lot of numerical modeling methods for the distillation columns were presented in scientific papers. This means that in order to find a model that would suit a specific process requires a considerable amount of time. This paper will present a general first principle model that aims at providing users with a framework that can be easily adapted for any type of distillation process. In order to prove these assumptions an isotopic distillation process for the enrichment of 13C has been selected.
{"title":"A general distillation modeling framework applied to an isotopic distillation column","authors":"I. Muntean, M. Stuckert, M. Abrudean","doi":"10.1109/MED.2011.5983157","DOIUrl":"https://doi.org/10.1109/MED.2011.5983157","url":null,"abstract":"Being one of the most approached subjects in the field of chemical engineering, a lot of numerical modeling methods for the distillation columns were presented in scientific papers. This means that in order to find a model that would suit a specific process requires a considerable amount of time. This paper will present a general first principle model that aims at providing users with a framework that can be easily adapted for any type of distillation process. In order to prove these assumptions an isotopic distillation process for the enrichment of 13C has been selected.","PeriodicalId":146203,"journal":{"name":"2011 19th Mediterranean Conference on Control & Automation (MED)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123789029","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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