Pub Date : 2015-05-27DOI: 10.1109/CARPATHIANCC.2015.7145037
Peter Balko, D. Rosinová
In this paper, we focus on robust decentralized controller design for Benchmark PID problem: nonlinear drum boiler, presented recently by Morilla [4]. For the control systems, used in practice, the most accurate mathematical model is needed, which includes the important features of the real system, and yet make it as simple as possible. When designing robust controllers, it is necessary to identify the system in several working points and determine the system model including uncertainties. In this paper we also deal with the identification of nonlinear model of the boiler, which has 3 inputs and 3 outputs. In our case, we chose one of the inputs as a constant with two variable values for working points, so we have our model reduced to 2×2. For identification we used three operating points, which we have chosen from the linear part from input output characteristics. After obtaining the transfer functions and respective uncertain model, various robust decentralized controller design methods are compared. The obtained results are verified on nonlinear model (based on real data).
{"title":"Robust control of drum boiler","authors":"Peter Balko, D. Rosinová","doi":"10.1109/CARPATHIANCC.2015.7145037","DOIUrl":"https://doi.org/10.1109/CARPATHIANCC.2015.7145037","url":null,"abstract":"In this paper, we focus on robust decentralized controller design for Benchmark PID problem: nonlinear drum boiler, presented recently by Morilla [4]. For the control systems, used in practice, the most accurate mathematical model is needed, which includes the important features of the real system, and yet make it as simple as possible. When designing robust controllers, it is necessary to identify the system in several working points and determine the system model including uncertainties. In this paper we also deal with the identification of nonlinear model of the boiler, which has 3 inputs and 3 outputs. In our case, we chose one of the inputs as a constant with two variable values for working points, so we have our model reduced to 2×2. For identification we used three operating points, which we have chosen from the linear part from input output characteristics. After obtaining the transfer functions and respective uncertain model, various robust decentralized controller design methods are compared. The obtained results are verified on nonlinear model (based on real data).","PeriodicalId":187762,"journal":{"name":"Proceedings of the 2015 16th International Carpathian Control Conference (ICCC)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128236049","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 : 2015-05-27DOI: 10.1109/CARPATHIANCC.2015.7145075
O. Kodym, V. Kebo, P. Staša, F. Beneš, J. Švub
The Web works as a network infrastructure connecting information sources and places for presenting this information. Internet of Things is next step of evolution of interconnection of intelligent information nodes/objects. Extrapolation of these techniques to the field of process control brings Internet of Processes to live. In this case artificial intelligence and SW agents in holonic systems are integrated as well. All stored and processed information can be presented as virtual (or augmented) reality world to the user. Virtual reality uses purpose-built artificial world, holonic systems can use different kind of virtual worlds - Holonic Manufacturing/Logistic System (HMS/HLS). Virtual world acts here as a model or matrix the holons use for control of their activities.
{"title":"Virtual reality in control","authors":"O. Kodym, V. Kebo, P. Staša, F. Beneš, J. Švub","doi":"10.1109/CARPATHIANCC.2015.7145075","DOIUrl":"https://doi.org/10.1109/CARPATHIANCC.2015.7145075","url":null,"abstract":"The Web works as a network infrastructure connecting information sources and places for presenting this information. Internet of Things is next step of evolution of interconnection of intelligent information nodes/objects. Extrapolation of these techniques to the field of process control brings Internet of Processes to live. In this case artificial intelligence and SW agents in holonic systems are integrated as well. All stored and processed information can be presented as virtual (or augmented) reality world to the user. Virtual reality uses purpose-built artificial world, holonic systems can use different kind of virtual worlds - Holonic Manufacturing/Logistic System (HMS/HLS). Virtual world acts here as a model or matrix the holons use for control of their activities.","PeriodicalId":187762,"journal":{"name":"Proceedings of the 2015 16th International Carpathian Control Conference (ICCC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114214175","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 : 2015-05-27DOI: 10.1109/CARPATHIANCC.2015.7145094
C. Marin, D. Selișteanu
The paper presents an original method for Finite Time Response (FTR) control of the affine systems. The FTR property is specific to linear systems only, known in the literature as dead-beat algorithms. In this work, it is developed as a new procedure for the affine systems FTR synthesis, called the Equivalent Input Method (EIM). For this purpose it calculates an equivalent input which will determine, according to a quadratic criterion, the best approximation of the affine component. This way the system is approximated by an affine system with an input variable equal to the sum of the original input and the equivalent input, but having only a residual affine component. This residual affine component has a smaller norm than the initial affine component. Considering zero the residual affine component, a FTR linear system synthesis procedure is applied. In the real system, controlled by a FTR control law, the residual affine component creates at each step a disturbance that FTR algorithm seeks to cancel. This approach is justified by the fact that the disturbance residual affine component is much smaller in norm than the original affine component. Under certain circumstances, this residual affine component can be zero. The controllability and algorithm convergence is analyzed. The proposed EIM method can be applied also for nonlinear systems approximated by Piecewise Affine Subsystems (PWAS). An experimental platform has been designed in Matlab environment allowing implementation of various affine systems and their control algorithms. Simulation results are included to support the method presented in the paper.
{"title":"Finite time response control of affine systems","authors":"C. Marin, D. Selișteanu","doi":"10.1109/CARPATHIANCC.2015.7145094","DOIUrl":"https://doi.org/10.1109/CARPATHIANCC.2015.7145094","url":null,"abstract":"The paper presents an original method for Finite Time Response (FTR) control of the affine systems. The FTR property is specific to linear systems only, known in the literature as dead-beat algorithms. In this work, it is developed as a new procedure for the affine systems FTR synthesis, called the Equivalent Input Method (EIM). For this purpose it calculates an equivalent input which will determine, according to a quadratic criterion, the best approximation of the affine component. This way the system is approximated by an affine system with an input variable equal to the sum of the original input and the equivalent input, but having only a residual affine component. This residual affine component has a smaller norm than the initial affine component. Considering zero the residual affine component, a FTR linear system synthesis procedure is applied. In the real system, controlled by a FTR control law, the residual affine component creates at each step a disturbance that FTR algorithm seeks to cancel. This approach is justified by the fact that the disturbance residual affine component is much smaller in norm than the original affine component. Under certain circumstances, this residual affine component can be zero. The controllability and algorithm convergence is analyzed. The proposed EIM method can be applied also for nonlinear systems approximated by Piecewise Affine Subsystems (PWAS). An experimental platform has been designed in Matlab environment allowing implementation of various affine systems and their control algorithms. Simulation results are included to support the method presented in the paper.","PeriodicalId":187762,"journal":{"name":"Proceedings of the 2015 16th International Carpathian Control Conference (ICCC)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125611943","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 : 2015-05-27DOI: 10.1109/CARPATHIANCC.2015.7145115
D. Purcaru, I. Purcaru, D. Popescu
Some electronic modules perform the monitoring and recording of electrical events in power plants. Such equipment is based on signals provided by transducers that measure the process parameters. For example, PC-08/104 Process Control is an equipment which performs monitoring and recording of specific parameters when transient electrical events occur, for the post-failure analysis and diagnosis. This programmable digital equipment is versatile and can be connected to an IBM compatible PC or process server. The results obtained in hydropower plants in Romania - where PC-08/104 equipment runs for more years - confirm its utility and robustness. The paper is focused on the results obtained in monitoring and recording more specific parameters of transient electrical events using PC-08/104 digital equipment in several hydropower plants. The analyzed results are based on the processing of analog and digital signal samples acquired at successive moments. Eight analog inputs and sixteen digital inputs are acquired. The analog inputs are the voltages of phases R, S and T, currents of phases R, S and T, homopolar voltage and the homopolar current. The main specific parameters to be monitored are the root mean square value and phase shift of each analog input, status of each digital input or logical functions associated, active and reactive powers, monitored electrical line impedances. The waveforms of all analog input signals, the status of each digital input signal and the phase diagram of the currents and voltages for the R, S, T phases are also displayed.
{"title":"Results obtained in monitoring transient electrical events from hydropower plants","authors":"D. Purcaru, I. Purcaru, D. Popescu","doi":"10.1109/CARPATHIANCC.2015.7145115","DOIUrl":"https://doi.org/10.1109/CARPATHIANCC.2015.7145115","url":null,"abstract":"Some electronic modules perform the monitoring and recording of electrical events in power plants. Such equipment is based on signals provided by transducers that measure the process parameters. For example, PC-08/104 Process Control is an equipment which performs monitoring and recording of specific parameters when transient electrical events occur, for the post-failure analysis and diagnosis. This programmable digital equipment is versatile and can be connected to an IBM compatible PC or process server. The results obtained in hydropower plants in Romania - where PC-08/104 equipment runs for more years - confirm its utility and robustness. The paper is focused on the results obtained in monitoring and recording more specific parameters of transient electrical events using PC-08/104 digital equipment in several hydropower plants. The analyzed results are based on the processing of analog and digital signal samples acquired at successive moments. Eight analog inputs and sixteen digital inputs are acquired. The analog inputs are the voltages of phases R, S and T, currents of phases R, S and T, homopolar voltage and the homopolar current. The main specific parameters to be monitored are the root mean square value and phase shift of each analog input, status of each digital input or logical functions associated, active and reactive powers, monitored electrical line impedances. The waveforms of all analog input signals, the status of each digital input signal and the phase diagram of the currents and voltages for the R, S, T phases are also displayed.","PeriodicalId":187762,"journal":{"name":"Proceedings of the 2015 16th International Carpathian Control Conference (ICCC)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129234089","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 : 2015-05-27DOI: 10.1109/CARPATHIANCC.2015.7145066
C. Hajiyev, Demet Cilden, Y. Somov
This paper describes the development of a gyroless attitude determination system that can rely on magnetometer and sun sensor measurements and achieve good accuracy. Vectors coming from the selected sensor data and developed models can be placed in Wahba's problem. The system uses Singular Value Decomposition (SVD) method to minimize the Wahba's loss function and determine the attitude of the satellite. In order to obtain the attitude of the satellite with desired accuracy an extended Kalman filter (EKF) for satellite's angular motion parameter estimation is designed. The EKF uses this attitude information as the measurements for providing more accurate attitude estimates even when the satellite is in eclipse. The “attitude angle error covariance matrix” calculated for the estimations of the SVD method are regarded as the measurement noise covariance for the EKF. The SVD and EKF algorithms are combined to estimate the attitude angles and angular velocities, respectively. The algorithm can be used for low-cost small satellites where using high power consuming, expensive, and fragile gyroscopes for determining spacecraft attitude are not reasonable.
{"title":"Gyroless attitude and rate estimation of small satellites using singular value decomposition and extended Kalman filter","authors":"C. Hajiyev, Demet Cilden, Y. Somov","doi":"10.1109/CARPATHIANCC.2015.7145066","DOIUrl":"https://doi.org/10.1109/CARPATHIANCC.2015.7145066","url":null,"abstract":"This paper describes the development of a gyroless attitude determination system that can rely on magnetometer and sun sensor measurements and achieve good accuracy. Vectors coming from the selected sensor data and developed models can be placed in Wahba's problem. The system uses Singular Value Decomposition (SVD) method to minimize the Wahba's loss function and determine the attitude of the satellite. In order to obtain the attitude of the satellite with desired accuracy an extended Kalman filter (EKF) for satellite's angular motion parameter estimation is designed. The EKF uses this attitude information as the measurements for providing more accurate attitude estimates even when the satellite is in eclipse. The “attitude angle error covariance matrix” calculated for the estimations of the SVD method are regarded as the measurement noise covariance for the EKF. The SVD and EKF algorithms are combined to estimate the attitude angles and angular velocities, respectively. The algorithm can be used for low-cost small satellites where using high power consuming, expensive, and fragile gyroscopes for determining spacecraft attitude are not reasonable.","PeriodicalId":187762,"journal":{"name":"Proceedings of the 2015 16th International Carpathian Control Conference (ICCC)","volume":"138 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123230641","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 : 2015-05-27DOI: 10.1109/CARPATHIANCC.2015.7145053
S. Dadvandipour, N. Dizaji, S. Entezar
This paper aims at using imperialist competitive algorithm based fuzzy logic (FICA), to control an automatic voltage regulator (AVR) in order to increase the stability and obtain more controllability of the system. For the stabilization of the automatic voltage regulator a proportional-integral-derivative controller (PID) was used. We applied the FICA, which is the combination of the imperialist competitive algorithm (ICA) and fuzzy logic to determine the optimal coefficients of the proportional-integral-derivative controller (PID). The new algorithm solves the main problems of the imperialist competitive algorithm (ICA), which are entrapped in local optimum points and low-speed convergence. This way, the control of the effective parameters of the (ICA) likes as the assimilation coefficient and the cost of colonies is performed with high accuracy and speed. We will show that the results obtained with the proposed intelligent algorithm (FICA), have higher convergence rate and more accuracy in comparison with the other algorithms.
{"title":"An approach to optimize the proportional-integral-derivative controller system","authors":"S. Dadvandipour, N. Dizaji, S. Entezar","doi":"10.1109/CARPATHIANCC.2015.7145053","DOIUrl":"https://doi.org/10.1109/CARPATHIANCC.2015.7145053","url":null,"abstract":"This paper aims at using imperialist competitive algorithm based fuzzy logic (FICA), to control an automatic voltage regulator (AVR) in order to increase the stability and obtain more controllability of the system. For the stabilization of the automatic voltage regulator a proportional-integral-derivative controller (PID) was used. We applied the FICA, which is the combination of the imperialist competitive algorithm (ICA) and fuzzy logic to determine the optimal coefficients of the proportional-integral-derivative controller (PID). The new algorithm solves the main problems of the imperialist competitive algorithm (ICA), which are entrapped in local optimum points and low-speed convergence. This way, the control of the effective parameters of the (ICA) likes as the assimilation coefficient and the cost of colonies is performed with high accuracy and speed. We will show that the results obtained with the proposed intelligent algorithm (FICA), have higher convergence rate and more accuracy in comparison with the other algorithms.","PeriodicalId":187762,"journal":{"name":"Proceedings of the 2015 16th International Carpathian Control Conference (ICCC)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121845597","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 : 2015-05-27DOI: 10.1109/CARPATHIANCC.2015.7145054
D. Danciu, D. Popescu, E. Bobaşu
The aim of the present paper is to numerically solve a class of systems of conservation laws, modeled by hyperbolic partial differential equations (hPDEs). Our approach considers a novel computational procedure which relies on using the repetitive structure induced by a convergent Method of Lines for assigning a cell-based recurrent neural network to perform the numerics. Emphasizing that the Method of Lines is more a concept than a specific procedure, our approach ensures the convergence of the approximation and preserves the basic properties of the solution of the initial hPDE problem, i.e. existence, uniqueness, data dependence and stability in the sense of Lyapunov. The procedure is applied on a bilinear control system arising from the process of combined heat-electricity generation. Simulation results are provided.
{"title":"Computational issues based on neural networks for a class of systems of conservation laws","authors":"D. Danciu, D. Popescu, E. Bobaşu","doi":"10.1109/CARPATHIANCC.2015.7145054","DOIUrl":"https://doi.org/10.1109/CARPATHIANCC.2015.7145054","url":null,"abstract":"The aim of the present paper is to numerically solve a class of systems of conservation laws, modeled by hyperbolic partial differential equations (hPDEs). Our approach considers a novel computational procedure which relies on using the repetitive structure induced by a convergent Method of Lines for assigning a cell-based recurrent neural network to perform the numerics. Emphasizing that the Method of Lines is more a concept than a specific procedure, our approach ensures the convergence of the approximation and preserves the basic properties of the solution of the initial hPDE problem, i.e. existence, uniqueness, data dependence and stability in the sense of Lyapunov. The procedure is applied on a bilinear control system arising from the process of combined heat-electricity generation. Simulation results are provided.","PeriodicalId":187762,"journal":{"name":"Proceedings of the 2015 16th International Carpathian Control Conference (ICCC)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121037752","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 : 2015-05-27DOI: 10.1109/CARPATHIANCC.2015.7145035
Naser Babaei, M. U. Salamci
A new approach to design Model Reference Adaptive Control (MRAC) for Multi Input Multi Output (MIMO) nonlinear systems is presented. First a nonlinear reference model system is considered whose nonlinear dynamics is controlled by optimal control using Successive Approximation Approach (SAA). In the second step, nonlinear plant dynamics which may have uncertain parameters or unmodeled dynamics is controlled by using MRAC based on recursive approximations of reference model at each iteration. A two-link manipulator model is used to demonstrate the efficiency of the proposed method.
{"title":"Model Reference Adaptive Control for MIMO nonlinear systems by using linear time varying approximation","authors":"Naser Babaei, M. U. Salamci","doi":"10.1109/CARPATHIANCC.2015.7145035","DOIUrl":"https://doi.org/10.1109/CARPATHIANCC.2015.7145035","url":null,"abstract":"A new approach to design Model Reference Adaptive Control (MRAC) for Multi Input Multi Output (MIMO) nonlinear systems is presented. First a nonlinear reference model system is considered whose nonlinear dynamics is controlled by optimal control using Successive Approximation Approach (SAA). In the second step, nonlinear plant dynamics which may have uncertain parameters or unmodeled dynamics is controlled by using MRAC based on recursive approximations of reference model at each iteration. A two-link manipulator model is used to demonstrate the efficiency of the proposed method.","PeriodicalId":187762,"journal":{"name":"Proceedings of the 2015 16th International Carpathian Control Conference (ICCC)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126083190","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 : 2015-05-27DOI: 10.1109/CARPATHIANCC.2015.7145117
P. Rapant, Tomás Inspektor, J. Kolejka, Katenna Batelkova, J. Zapletalová, K. Kirchner, T. Krejčí
Recently running climate changes have resulted in an increased incidence of natural phenomenon that can adversely affect the life of people - so called flash floods. A typical characteristic of these floods is their very rapid onset, relatively short peak and rapid retreat. This short period varies and might range somewhere between few minutes up to one hour. In addition, these flash floods often affect areas without recent precipitations.
{"title":"Early warning of flash floods based on the weather radar","authors":"P. Rapant, Tomás Inspektor, J. Kolejka, Katenna Batelkova, J. Zapletalová, K. Kirchner, T. Krejčí","doi":"10.1109/CARPATHIANCC.2015.7145117","DOIUrl":"https://doi.org/10.1109/CARPATHIANCC.2015.7145117","url":null,"abstract":"Recently running climate changes have resulted in an increased incidence of natural phenomenon that can adversely affect the life of people - so called flash floods. A typical characteristic of these floods is their very rapid onset, relatively short peak and rapid retreat. This short period varies and might range somewhere between few minutes up to one hour. In addition, these flash floods often affect areas without recent precipitations.","PeriodicalId":187762,"journal":{"name":"Proceedings of the 2015 16th International Carpathian Control Conference (ICCC)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115317899","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 : 2015-05-27DOI: 10.1109/CARPATHIANCC.2015.7145045
Ildiko Bolkeny
Gas hydrates can cause serious problems in oil- and gas industry. It can be formed by synergies of gas- and water molecules at low temperature and high pressure. The major objective of this article is to present gas hydrate's formation at laboratory conditions and to examining the curve of hydrate based on the measured values. Furthermore, another main aim of this paper is to compare the results of laboratory to the values measured at gas production wells.
{"title":"Measurement and analysis of hydrate formation","authors":"Ildiko Bolkeny","doi":"10.1109/CARPATHIANCC.2015.7145045","DOIUrl":"https://doi.org/10.1109/CARPATHIANCC.2015.7145045","url":null,"abstract":"Gas hydrates can cause serious problems in oil- and gas industry. It can be formed by synergies of gas- and water molecules at low temperature and high pressure. The major objective of this article is to present gas hydrate's formation at laboratory conditions and to examining the curve of hydrate based on the measured values. Furthermore, another main aim of this paper is to compare the results of laboratory to the values measured at gas production wells.","PeriodicalId":187762,"journal":{"name":"Proceedings of the 2015 16th International Carpathian Control Conference (ICCC)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114610547","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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