Pub Date : 2017-11-16DOI: 10.1109/ICSTCC.2017.8107118
O. Bagdasar, A. Birlutiu, Minsi Chen, I. Popa
This paper is focused on two major problems within the ceramics industry. The reproduction of a desired color from pigments (which is time-intensive), and the correction of colors on the production line (which is costly) are processes which still rely heavily on numerous experiments carried out by human operators. This study presents the key aspects of these two processes and suggests some mathematical and computer sciences tools, aimed at automatizing the current procedures. Data was provided by an industrial partner, where the proposed models and solutions will be tested and validated. 2010 Mathematics Subject Classification: Primary 05A16, Secondary 05A15,05A18,11B75.
{"title":"Qualitative case study methodology: Automatic design and correction of ceramic colors","authors":"O. Bagdasar, A. Birlutiu, Minsi Chen, I. Popa","doi":"10.1109/ICSTCC.2017.8107118","DOIUrl":"https://doi.org/10.1109/ICSTCC.2017.8107118","url":null,"abstract":"This paper is focused on two major problems within the ceramics industry. The reproduction of a desired color from pigments (which is time-intensive), and the correction of colors on the production line (which is costly) are processes which still rely heavily on numerous experiments carried out by human operators. This study presents the key aspects of these two processes and suggests some mathematical and computer sciences tools, aimed at automatizing the current procedures. Data was provided by an industrial partner, where the proposed models and solutions will be tested and validated. 2010 Mathematics Subject Classification: Primary 05A16, Secondary 05A15,05A18,11B75.","PeriodicalId":374572,"journal":{"name":"2017 21st International Conference on System Theory, Control and Computing (ICSTCC)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115360886","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 : 2017-10-19DOI: 10.1109/ICSTCC.2017.8107004
L. Nguyen, Minh-Duc Hua, Guillaume Allibert, T. Hamel
An inertial-aided visual servo control approach for fully-actuated Autonomous Underwater Vehicles (AUVs) without relying on linear velocity measurements is proposed. The homography obtained from corresponding images of a locally planar scene is directly exploited as feedback information. A cascade inner-outer loop control architecture is adopted that facilitates both control implementation and gain tuning procedures. Control robustness with respect to model uncertainties and external disturbances is reinforced using both high gain estimation and integrator techniques. Rigourous stability analysis and insightful discussions are provided throughout the paper. Finally, robustness and efficiency of the proposed approach are illustrated by simulation on a realistic AUV model.
{"title":"Inertial-aided homography-based visual servo control of autonomous underwater vehicles without linear velocity measurements","authors":"L. Nguyen, Minh-Duc Hua, Guillaume Allibert, T. Hamel","doi":"10.1109/ICSTCC.2017.8107004","DOIUrl":"https://doi.org/10.1109/ICSTCC.2017.8107004","url":null,"abstract":"An inertial-aided visual servo control approach for fully-actuated Autonomous Underwater Vehicles (AUVs) without relying on linear velocity measurements is proposed. The homography obtained from corresponding images of a locally planar scene is directly exploited as feedback information. A cascade inner-outer loop control architecture is adopted that facilitates both control implementation and gain tuning procedures. Control robustness with respect to model uncertainties and external disturbances is reinforced using both high gain estimation and integrator techniques. Rigourous stability analysis and insightful discussions are provided throughout the paper. Finally, robustness and efficiency of the proposed approach are illustrated by simulation on a realistic AUV model.","PeriodicalId":374572,"journal":{"name":"2017 21st International Conference on System Theory, Control and Computing (ICSTCC)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132546214","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 : 2017-10-19DOI: 10.1109/ICSTCC.2017.8107072
C. Jin, I. Boussaada, S. Niculescu, K. Gu
This paper overviews the literature pertaining to the stability analysis of systems with delay-dependent coefficients, which can arise from various scientific and engineering applications. Research on Stability analysis for systems with a single delay is first reviewed, followed by a discussion of some techniques also applicable to the multiple-delay case. We attempt to provide the main ideas of various stability analysis methods, the insight gained from them as well as their specific advantages and limitations. Potential directions for future research are suggested.
{"title":"An overview of stability analysis of systems with delay dependent coefficients","authors":"C. Jin, I. Boussaada, S. Niculescu, K. Gu","doi":"10.1109/ICSTCC.2017.8107072","DOIUrl":"https://doi.org/10.1109/ICSTCC.2017.8107072","url":null,"abstract":"This paper overviews the literature pertaining to the stability analysis of systems with delay-dependent coefficients, which can arise from various scientific and engineering applications. Research on Stability analysis for systems with a single delay is first reviewed, followed by a discussion of some techniques also applicable to the multiple-delay case. We attempt to provide the main ideas of various stability analysis methods, the insight gained from them as well as their specific advantages and limitations. Potential directions for future research are suggested.","PeriodicalId":374572,"journal":{"name":"2017 21st International Conference on System Theory, Control and Computing (ICSTCC)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115339895","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 : 2017-10-19DOI: 10.1109/ICSTCC.2017.8107073
I. Boussaada, Sami Tliba, S. Niculescu
In this work, we address the problem of reducing the vibrations in the case of a thin flexible beam, with an Euler-Bernoulli configuration thanks to a new type of feedback controller based on a delayed proportional action. The flexible structure is equipped with two piezoelectric patches: one of them works as a sensor and the other as an actuator. Each one of them is bonded on one side of the beam and both are collocated. The model of this system is obtained from a finite element analysis, leading to a linear state space model. The purpose of this work is to investigate the properties of the proposed output feedback controller in terms of vibration damping and of robustness. This controller is based on a rightmost-characteristic root assignment approach. Simulation results show the effectiveness of this method of controller design.
{"title":"A delayed feedback controller for active vibration control: A rightmost-characteristic root assignment based approach","authors":"I. Boussaada, Sami Tliba, S. Niculescu","doi":"10.1109/ICSTCC.2017.8107073","DOIUrl":"https://doi.org/10.1109/ICSTCC.2017.8107073","url":null,"abstract":"In this work, we address the problem of reducing the vibrations in the case of a thin flexible beam, with an Euler-Bernoulli configuration thanks to a new type of feedback controller based on a delayed proportional action. The flexible structure is equipped with two piezoelectric patches: one of them works as a sensor and the other as an actuator. Each one of them is bonded on one side of the beam and both are collocated. The model of this system is obtained from a finite element analysis, leading to a linear state space model. The purpose of this work is to investigate the properties of the proposed output feedback controller in terms of vibration damping and of robustness. This controller is based on a rightmost-characteristic root assignment approach. Simulation results show the effectiveness of this method of controller design.","PeriodicalId":374572,"journal":{"name":"2017 21st International Conference on System Theory, Control and Computing (ICSTCC)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126006564","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 : 2017-10-01DOI: 10.1109/ICSTCC.2017.8107058
Ion Ghita, P. Kvieska, D. Beauvois, E. Godoy
For complying with power distributor regulation, the electric car chargers have to address the line current harmonic mitigation problem. The conventional solution is a proportional integral controller on the rectified current with a feed-forward anticipation action on the input network current. In this work we take advantage of a harmonic description of the electric car charger in order to propose a non-linear output feedback control based on sliding mode approach and Kalman filtering. The performance of the proposed control strategy is demonstrated via simulations realised in Matlab SimPowerSystems.
{"title":"Output feedback non-linear harmonic control of an industrial electric vehicle battery charger","authors":"Ion Ghita, P. Kvieska, D. Beauvois, E. Godoy","doi":"10.1109/ICSTCC.2017.8107058","DOIUrl":"https://doi.org/10.1109/ICSTCC.2017.8107058","url":null,"abstract":"For complying with power distributor regulation, the electric car chargers have to address the line current harmonic mitigation problem. The conventional solution is a proportional integral controller on the rectified current with a feed-forward anticipation action on the input network current. In this work we take advantage of a harmonic description of the electric car charger in order to propose a non-linear output feedback control based on sliding mode approach and Kalman filtering. The performance of the proposed control strategy is demonstrated via simulations realised in Matlab SimPowerSystems.","PeriodicalId":374572,"journal":{"name":"2017 21st International Conference on System Theory, Control and Computing (ICSTCC)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121796229","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 : 2017-10-01DOI: 10.1109/ICSTCC.2017.8107075
A. Sumalan, D. Popescu, L. Ichim
This paper presents a method to detect small flooded areas from images which contain also vegetation zones. So, two classes are considered: flood class and vegetation. For the learning phase a supervised technique based on small patches is used. Based on efficiency analysis, the Histograms of Oriented Gradients on H colour channel and mean intensity on gray level are selected as discriminated features. The classification/ segmentation phase considers two separate classifiers: one for flood class and another for vegetation class. Because there are mixed patches (with water and also vegetation) a new class (common parts) is created as logical OR between the binary decisions of the classifiers. For each test image, the percentage of flooded, vegetation or common parts is calculated.
{"title":"Flooded and vegetation areas detection from UAV images using multiple descriptors","authors":"A. Sumalan, D. Popescu, L. Ichim","doi":"10.1109/ICSTCC.2017.8107075","DOIUrl":"https://doi.org/10.1109/ICSTCC.2017.8107075","url":null,"abstract":"This paper presents a method to detect small flooded areas from images which contain also vegetation zones. So, two classes are considered: flood class and vegetation. For the learning phase a supervised technique based on small patches is used. Based on efficiency analysis, the Histograms of Oriented Gradients on H colour channel and mean intensity on gray level are selected as discriminated features. The classification/ segmentation phase considers two separate classifiers: one for flood class and another for vegetation class. Because there are mixed patches (with water and also vegetation) a new class (common parts) is created as logical OR between the binary decisions of the classifiers. For each test image, the percentage of flooded, vegetation or common parts is calculated.","PeriodicalId":374572,"journal":{"name":"2017 21st International Conference on System Theory, Control and Computing (ICSTCC)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124799237","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 : 2017-10-01DOI: 10.1109/ICSTCC.2017.8107062
P. Latosiński, A. Bartoszewicz, P. Leśniewski
Reaching law approach is a straightforward method of ensuring the desired dynamic response of a variable structure system. In our paper, this method is used to design a new non-switching type discrete time sliding mode control strategy. The strategy is shown to ensure a finite time reaching phase, stability of the sliding motion and bounded convergence rate of the sliding variable to the vicinity of the switching plane. The strategy is then applied to a class of systems representing supply chains with commodity loss during transport. It is demonstrated that for such plants, the proposed strategy ensures full satisfaction of the unpredictable demand while adhering to necessary state and input constraints.
{"title":"A new reaching law based DSMC for inventory management systems","authors":"P. Latosiński, A. Bartoszewicz, P. Leśniewski","doi":"10.1109/ICSTCC.2017.8107062","DOIUrl":"https://doi.org/10.1109/ICSTCC.2017.8107062","url":null,"abstract":"Reaching law approach is a straightforward method of ensuring the desired dynamic response of a variable structure system. In our paper, this method is used to design a new non-switching type discrete time sliding mode control strategy. The strategy is shown to ensure a finite time reaching phase, stability of the sliding motion and bounded convergence rate of the sliding variable to the vicinity of the switching plane. The strategy is then applied to a class of systems representing supply chains with commodity loss during transport. It is demonstrated that for such plants, the proposed strategy ensures full satisfaction of the unpredictable demand while adhering to necessary state and input constraints.","PeriodicalId":374572,"journal":{"name":"2017 21st International Conference on System Theory, Control and Computing (ICSTCC)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128444930","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 : 2017-10-01DOI: 10.1109/ICSTCC.2017.8107137
Cornel Bumb, M. Radac, R. Precup, Raul-Cristian Roman
We propose herein a data-driven dead-zone (DZ) compensation strategy using a model-free Virtual Reference Feedback Tuning (VRFT) approach. The VRFT tuning scheme is accommodated for two controller structures: the first one which explicitly includes a model of the DZ inverse to be identified and the second one which uses a Neural Network (NN) to model the controller to be identified. The main question to be answered here is whether if the inclusion of an explicit model of a static nonlinearity (DZ in this case) can be avoided while preserving the control system performance. Thorough investigation case studies are carried out both in simulation and experiment on a laboratory 3D-crane system as a typical servo system control application.
{"title":"Data-driven nonlinear VRFT for dead-zone compensation in servo systems control","authors":"Cornel Bumb, M. Radac, R. Precup, Raul-Cristian Roman","doi":"10.1109/ICSTCC.2017.8107137","DOIUrl":"https://doi.org/10.1109/ICSTCC.2017.8107137","url":null,"abstract":"We propose herein a data-driven dead-zone (DZ) compensation strategy using a model-free Virtual Reference Feedback Tuning (VRFT) approach. The VRFT tuning scheme is accommodated for two controller structures: the first one which explicitly includes a model of the DZ inverse to be identified and the second one which uses a Neural Network (NN) to model the controller to be identified. The main question to be answered here is whether if the inclusion of an explicit model of a static nonlinearity (DZ in this case) can be avoided while preserving the control system performance. Thorough investigation case studies are carried out both in simulation and experiment on a laboratory 3D-crane system as a typical servo system control application.","PeriodicalId":374572,"journal":{"name":"2017 21st International Conference on System Theory, Control and Computing (ICSTCC)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129222983","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 : 2017-10-01DOI: 10.1109/ICSTCC.2017.8107059
F. C. Ferreira, M. F. Santos, R. Z. Nogueira, A. F. Santos Neto
Automation systems, as well as process control, has played a key role in the industry nowadays. For good system performance, it is necessary that mathematical model is closest to the real model, which is detailed in this work. The objective of this study is to present a modeling (considering the viscous friction), stability analysis and simple PID controller tuning using as an example, an arm with one Degree Of Freedom (DOF), actuated by a brushless motor. Taking this into account, this work can be useful in robotics area as a first class experimental case. The measurement will be performed by gyroscope and accelerometer sensors built for Arduino. The control will be based on space states modeling and stability analysis made from the portrait phase, considering the system nonlinearities. Finally, the controller implementation results are presented using the physical system.
{"title":"Modeling and control of one DOF arm controlled by brushless motor: A first class experimental case","authors":"F. C. Ferreira, M. F. Santos, R. Z. Nogueira, A. F. Santos Neto","doi":"10.1109/ICSTCC.2017.8107059","DOIUrl":"https://doi.org/10.1109/ICSTCC.2017.8107059","url":null,"abstract":"Automation systems, as well as process control, has played a key role in the industry nowadays. For good system performance, it is necessary that mathematical model is closest to the real model, which is detailed in this work. The objective of this study is to present a modeling (considering the viscous friction), stability analysis and simple PID controller tuning using as an example, an arm with one Degree Of Freedom (DOF), actuated by a brushless motor. Taking this into account, this work can be useful in robotics area as a first class experimental case. The measurement will be performed by gyroscope and accelerometer sensors built for Arduino. The control will be based on space states modeling and stability analysis made from the portrait phase, considering the system nonlinearities. Finally, the controller implementation results are presented using the physical system.","PeriodicalId":374572,"journal":{"name":"2017 21st International Conference on System Theory, Control and Computing (ICSTCC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123653778","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 : 2017-10-01DOI: 10.1109/ICSTCC.2017.8107139
Ł. Sajewski
State space model of descriptor continuous-time linear system with different fractional orders is addressed. Necessary and sufficient conditions for positivity of the descriptor continuous-time linear system with different fractional orders are formulated. Decentralized controller for stabilization of the class of positive descriptor fractional systems is given. Method for finding gain matrix of the controller is presented and illustrated by a numerical example.
{"title":"Stabilization of positive descriptor fractional continuous-time linear system with two different fractional orders by decentralized controller","authors":"Ł. Sajewski","doi":"10.1109/ICSTCC.2017.8107139","DOIUrl":"https://doi.org/10.1109/ICSTCC.2017.8107139","url":null,"abstract":"State space model of descriptor continuous-time linear system with different fractional orders is addressed. Necessary and sufficient conditions for positivity of the descriptor continuous-time linear system with different fractional orders are formulated. Decentralized controller for stabilization of the class of positive descriptor fractional systems is given. Method for finding gain matrix of the controller is presented and illustrated by a numerical example.","PeriodicalId":374572,"journal":{"name":"2017 21st International Conference on System Theory, Control and Computing (ICSTCC)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125599202","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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