Pub Date : 2013-10-17DOI: 10.1109/IcConSCS.2013.6632039
E. Kamal, A. Aitouche, M. Bayart
A new Fuzzy Fault Tolerant Control (FFTC) algorithm is proposed for nonlinear Takagi-Sugeno (TS) systems with parameter uncertainties. The modifications made in this approach enable robust handling of multiple simultaneous sensor failures. The control law aims to compensate for sensor faults and allows the system states to track a reference corresponding to a fault free situation. The proposed FFTC strategy is based on the fault estimate and the error between the faulty system state and a reference system state. A Fuzzy Proportional Integral Observer (FPIO) design is proposed to estimate the state and sensor faults. Sufficient conditions are derived for robust stabilization in the sense of Lyapunov asymptotic stability and are formulated in the format of Linear Matrix Inequalities (LMIs). The gains of the FFTC and FPIO are obtained by solving these LMIs. Simulation results for a Wind-Diesel-Storage-Hybrid System (WDSHS) are presented to illustrate the effectiveness of the proposed method.
{"title":"Fault tolerant control of WES parametric uncertainties","authors":"E. Kamal, A. Aitouche, M. Bayart","doi":"10.1109/IcConSCS.2013.6632039","DOIUrl":"https://doi.org/10.1109/IcConSCS.2013.6632039","url":null,"abstract":"A new Fuzzy Fault Tolerant Control (FFTC) algorithm is proposed for nonlinear Takagi-Sugeno (TS) systems with parameter uncertainties. The modifications made in this approach enable robust handling of multiple simultaneous sensor failures. The control law aims to compensate for sensor faults and allows the system states to track a reference corresponding to a fault free situation. The proposed FFTC strategy is based on the fault estimate and the error between the faulty system state and a reference system state. A Fuzzy Proportional Integral Observer (FPIO) design is proposed to estimate the state and sensor faults. Sufficient conditions are derived for robust stabilization in the sense of Lyapunov asymptotic stability and are formulated in the format of Linear Matrix Inequalities (LMIs). The gains of the FFTC and FPIO are obtained by solving these LMIs. Simulation results for a Wind-Diesel-Storage-Hybrid System (WDSHS) are presented to illustrate the effectiveness of the proposed method.","PeriodicalId":265358,"journal":{"name":"2nd International Conference on Systems and Computer Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126441893","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 : 2013-10-17DOI: 10.1109/IcConSCS.2013.6632027
G. Burlacu, L. Cojocaru, C. Danila, Dan Popescu, A. Stanescu
The concept of Digital Business Ecosystem becomes an important aspect of everyday economy and technologies in this area are becoming a reality considering that results from European Join Collaborative Research Projects (FP6 - FP7) are been integrated within Digital Business Ecosystem. In this context, a Farm Management Information System, designed as a part of this Digital Business Ecosystem, could be the key to solving many current problems and should be designed to sustain agricultural Digital Business Ecosystem development.
{"title":"A digital business ecosystem integrated approach for farm management information system","authors":"G. Burlacu, L. Cojocaru, C. Danila, Dan Popescu, A. Stanescu","doi":"10.1109/IcConSCS.2013.6632027","DOIUrl":"https://doi.org/10.1109/IcConSCS.2013.6632027","url":null,"abstract":"The concept of Digital Business Ecosystem becomes an important aspect of everyday economy and technologies in this area are becoming a reality considering that results from European Join Collaborative Research Projects (FP6 - FP7) are been integrated within Digital Business Ecosystem. In this context, a Farm Management Information System, designed as a part of this Digital Business Ecosystem, could be the key to solving many current problems and should be designed to sustain agricultural Digital Business Ecosystem development.","PeriodicalId":265358,"journal":{"name":"2nd International Conference on Systems and Computer Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116775450","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 : 2013-10-17DOI: 10.1109/IcConSCS.2013.6632045
E. Petre, D. Selișteanu, D. Popescu
This paper presents the design and analysis of adaptive and robust-adaptive control strategies for a nonlinear propagation bioprocesses carried out inside a fixed bed reactor. The design schemes are developed under the realistic assumption that both bacterial growth rates and influent flow rates are time-varying and uncertain, but some lower and upper bounds of these uncertainties are known. The proposed control structures are achieved by combining a linearizing control law with an appropriately state asymptotic observer or an interval observer and with a parameter estimator used for on-line estimation of unknown kinetics. The effectiveness of the proposed algorithms is validated by numerical simulations applied in the case of a prototype fixed bed bioprocess.
{"title":"Adaptive control technique for a propagation bioprocess carried out inside a fixed bed reactor","authors":"E. Petre, D. Selișteanu, D. Popescu","doi":"10.1109/IcConSCS.2013.6632045","DOIUrl":"https://doi.org/10.1109/IcConSCS.2013.6632045","url":null,"abstract":"This paper presents the design and analysis of adaptive and robust-adaptive control strategies for a nonlinear propagation bioprocesses carried out inside a fixed bed reactor. The design schemes are developed under the realistic assumption that both bacterial growth rates and influent flow rates are time-varying and uncertain, but some lower and upper bounds of these uncertainties are known. The proposed control structures are achieved by combining a linearizing control law with an appropriately state asymptotic observer or an interval observer and with a parameter estimator used for on-line estimation of unknown kinetics. The effectiveness of the proposed algorithms is validated by numerical simulations applied in the case of a prototype fixed bed bioprocess.","PeriodicalId":265358,"journal":{"name":"2nd International Conference on Systems and Computer Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124534850","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 : 2013-10-17DOI: 10.1109/IcConSCS.2013.6632030
Alexandru Gherghina, A. Olteanu, N. Tapus
Mobile devices are becoming more and more popular and at the same time more powerful and power-hungry. Therefore, they represent the best example of systems that would benefit from lowering processing expectations by the use of offloading, because of the continuous lowering battery life and increasing Internet speed. This paper aims to help in discovering the best method of moving an algorithm, or a part of an application, to a more capable system. We will go through finding the performance metrics that describe an application, methods of measuring and the possible ways of using them.
{"title":"Measuring performance and energy consumption when offloading from mobile devices","authors":"Alexandru Gherghina, A. Olteanu, N. Tapus","doi":"10.1109/IcConSCS.2013.6632030","DOIUrl":"https://doi.org/10.1109/IcConSCS.2013.6632030","url":null,"abstract":"Mobile devices are becoming more and more popular and at the same time more powerful and power-hungry. Therefore, they represent the best example of systems that would benefit from lowering processing expectations by the use of offloading, because of the continuous lowering battery life and increasing Internet speed. This paper aims to help in discovering the best method of moving an algorithm, or a part of an application, to a more capable system. We will go through finding the performance metrics that describe an application, methods of measuring and the possible ways of using them.","PeriodicalId":265358,"journal":{"name":"2nd International Conference on Systems and Computer Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131550508","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 : 2013-10-17DOI: 10.1109/IcConSCS.2013.6632025
M. Makkar, J. Dieulot
This paper proposes a chemical Port-Hamiltonian formulation of a well-mixed CSTR model considering that the chemical reaction is taking place at constant pressure and temperature. More focus is put on chemical reaction network theory and its inclusion in the formulation to achieve synchronization between concentration space and reaction space. It is made clear that Gibbs free energy is an apt Hamiltonian function for such cases. The same concept is applied on a basic enzyme reaction. The Bond Graph models related to Hamiltonian formulation for both types of reactions are given in order to show its ability of pictorial representation and intuitive solution.
{"title":"Bond graph model and Port-Hamiltonian formulation of an enzymatic reaction in a CSTR","authors":"M. Makkar, J. Dieulot","doi":"10.1109/IcConSCS.2013.6632025","DOIUrl":"https://doi.org/10.1109/IcConSCS.2013.6632025","url":null,"abstract":"This paper proposes a chemical Port-Hamiltonian formulation of a well-mixed CSTR model considering that the chemical reaction is taking place at constant pressure and temperature. More focus is put on chemical reaction network theory and its inclusion in the formulation to achieve synchronization between concentration space and reaction space. It is made clear that Gibbs free energy is an apt Hamiltonian function for such cases. The same concept is applied on a basic enzyme reaction. The Bond Graph models related to Hamiltonian formulation for both types of reactions are given in order to show its ability of pictorial representation and intuitive solution.","PeriodicalId":265358,"journal":{"name":"2nd International Conference on Systems and Computer Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116153397","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 : 2013-10-17DOI: 10.1109/IcConSCS.2013.6632032
A. Voinescu, D. Dragomir, A. Draghici, P. Bara
This paper presents a versatile, multi-role robotic platform optimized for advanced motion in line-following scenarios with application to robotic contests, education and specialized tasks. Generally, academic robotic platforms either provide only basic motion features, or are too specialized. Our platform's goal is to be sufficiently versatile to be adapted easily to any task, but to provide performance in common scenarios. For this aim, our modular system is comprised of a Mecanum-wheel based omnidirectional motion system with a dense array of line sensors. The system comprises other sensors and actuators, which can be replaced or augmented with more specialized sensors and mechanical systems for each application. We demonstrate our platform in a contest scenario.
{"title":"Multi-processor architecture for a versatile autonomous robot","authors":"A. Voinescu, D. Dragomir, A. Draghici, P. Bara","doi":"10.1109/IcConSCS.2013.6632032","DOIUrl":"https://doi.org/10.1109/IcConSCS.2013.6632032","url":null,"abstract":"This paper presents a versatile, multi-role robotic platform optimized for advanced motion in line-following scenarios with application to robotic contests, education and specialized tasks. Generally, academic robotic platforms either provide only basic motion features, or are too specialized. Our platform's goal is to be sufficiently versatile to be adapted easily to any task, but to provide performance in common scenarios. For this aim, our modular system is comprised of a Mecanum-wheel based omnidirectional motion system with a dense array of line sensors. The system comprises other sensors and actuators, which can be replaced or augmented with more specialized sensors and mechanical systems for each application. We demonstrate our platform in a contest scenario.","PeriodicalId":265358,"journal":{"name":"2nd International Conference on Systems and Computer Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121934833","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 : 2013-10-17DOI: 10.1109/IcConSCS.2013.6632041
I. Kacem
In this paper, we consider some practical scheduling problems under unavailability constraints (break-down periods, maintenance durations and/or setup times). Such problems can be met in different industrial environments and be associated to numerous real-life applications. The studied criteria are related to the maximum lateness minimization. The paper is organized in two main parts. The first part focuses on some special cases (makespan minimization when tails are equal and maximum lateness minimization when release dates are equal (see Section 2). The second part is devoted to the maximum lateness minimization (see Section 3). In each part, we present the main contributions and explain their principles (complexity results, heuristic algorithms and their worst-case performance, existing approximation schemes, exact methods, dynamic programming,...), Finally, Section 4 concludes the paper.
{"title":"Effective algorithms for scheduling problems under non-availability constraints (Invited paper)","authors":"I. Kacem","doi":"10.1109/IcConSCS.2013.6632041","DOIUrl":"https://doi.org/10.1109/IcConSCS.2013.6632041","url":null,"abstract":"In this paper, we consider some practical scheduling problems under unavailability constraints (break-down periods, maintenance durations and/or setup times). Such problems can be met in different industrial environments and be associated to numerous real-life applications. The studied criteria are related to the maximum lateness minimization. The paper is organized in two main parts. The first part focuses on some special cases (makespan minimization when tails are equal and maximum lateness minimization when release dates are equal (see Section 2). The second part is devoted to the maximum lateness minimization (see Section 3). In each part, we present the main contributions and explain their principles (complexity results, heuristic algorithms and their worst-case performance, existing approximation schemes, exact methods, dynamic programming,...), Finally, Section 4 concludes the paper.","PeriodicalId":265358,"journal":{"name":"2nd International Conference on Systems and Computer Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130131878","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 : 2013-10-17DOI: 10.1109/IcConSCS.2013.6632024
G. Florea, C. Lupu
This paper presents high automated control solutions implemented on a unique software platform designed for real-time data acquisition, system identification and control. In the same time a comparison study between pole placement method and LQG optimal control for a MIMO industrial process will be presented. A special module for data process, developed for robust Matlab algorithms integration, is included and described on the following chapters.
{"title":"A software platform for real time data acquisition, system identification and control of a multivariable process","authors":"G. Florea, C. Lupu","doi":"10.1109/IcConSCS.2013.6632024","DOIUrl":"https://doi.org/10.1109/IcConSCS.2013.6632024","url":null,"abstract":"This paper presents high automated control solutions implemented on a unique software platform designed for real-time data acquisition, system identification and control. In the same time a comparison study between pole placement method and LQG optimal control for a MIMO industrial process will be presented. A special module for data process, developed for robust Matlab algorithms integration, is included and described on the following chapters.","PeriodicalId":265358,"journal":{"name":"2nd International Conference on Systems and Computer Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130429196","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 : 2013-10-17DOI: 10.1109/IcConSCS.2013.6632016
D. Popescu, C. Petrescu, C. Dimon, Mihai Boangiu
The main objective of this work is the design and implementation a numerical control solution for the ethylene reactor, the key-installation in the petrochemical industry. We introduce some technological characteristics of this petrochemical process and the main aspects about the control system solution for the process plant. A robust control strategy for numerical control systems are proposed. Finally, we found an optimal operating point, considering that the process has a nonlinear multivariable structure. The results have been implemented on an assembly of pyrolysis reactors on the petrochemical platform from Pitesti, Romania.
{"title":"Control and optimization for a petrochemical reactor","authors":"D. Popescu, C. Petrescu, C. Dimon, Mihai Boangiu","doi":"10.1109/IcConSCS.2013.6632016","DOIUrl":"https://doi.org/10.1109/IcConSCS.2013.6632016","url":null,"abstract":"The main objective of this work is the design and implementation a numerical control solution for the ethylene reactor, the key-installation in the petrochemical industry. We introduce some technological characteristics of this petrochemical process and the main aspects about the control system solution for the process plant. A robust control strategy for numerical control systems are proposed. Finally, we found an optimal operating point, considering that the process has a nonlinear multivariable structure. The results have been implemented on an assembly of pyrolysis reactors on the petrochemical platform from Pitesti, Romania.","PeriodicalId":265358,"journal":{"name":"2nd International Conference on Systems and Computer Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126507777","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 : 2013-10-17DOI: 10.1109/IcConSCS.2013.6632037
Elena M. Cimpoesu, B. Ciubotaru, D. Stefanoiu
This paper focuses on the design of a Fault Isolation procedure suitable for integration within Fault Detection and Diagnosis schemes which are based on parameter estimation techniques. A brief discussion regarding the structure and functionality of model-based technical diagnosis systems is provided within this context, and a summary of previously obtained results in the field of fault detection and fault identification using the Recursive Least Squares method with exponential weighting and constant forgetting factor is presented. A fault localization procedure is proposed based on these results and on the principles of the directional fault isolation approach. Also, an enhancement is made to the classical model-based fault isolation approach, consisting of using history data in order to increase the accuracy of the associated algorithm. An application example from the field of aircraft control is considered in order to illustrate the performances of the proposed method.
{"title":"Directional fault isolation procedure for diagnosis systems based on parameter estimation techniques","authors":"Elena M. Cimpoesu, B. Ciubotaru, D. Stefanoiu","doi":"10.1109/IcConSCS.2013.6632037","DOIUrl":"https://doi.org/10.1109/IcConSCS.2013.6632037","url":null,"abstract":"This paper focuses on the design of a Fault Isolation procedure suitable for integration within Fault Detection and Diagnosis schemes which are based on parameter estimation techniques. A brief discussion regarding the structure and functionality of model-based technical diagnosis systems is provided within this context, and a summary of previously obtained results in the field of fault detection and fault identification using the Recursive Least Squares method with exponential weighting and constant forgetting factor is presented. A fault localization procedure is proposed based on these results and on the principles of the directional fault isolation approach. Also, an enhancement is made to the classical model-based fault isolation approach, consisting of using history data in order to increase the accuracy of the associated algorithm. An application example from the field of aircraft control is considered in order to illustrate the performances of the proposed method.","PeriodicalId":265358,"journal":{"name":"2nd International Conference on Systems and Computer Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130662344","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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