M. F. Santos, D. C. Silva, M. F. Silva, V. Vidal, L. Honório, V. M. L. Lopes, L. A. Z. Silva, H. B. Rezende, J. M. S. Ribeiro, A. Cerqueira, A. Pancoti, B. A. Regina
{"title":"Project and Design of Multi-Rate Loop Controllers for Fixed-Wings Aircrafts","authors":"M. F. Santos, D. C. Silva, M. F. Silva, V. Vidal, L. Honório, V. M. L. Lopes, L. A. Z. Silva, H. B. Rezende, J. M. S. Ribeiro, A. Cerqueira, A. Pancoti, B. A. Regina","doi":"10.1109/ICSTCC.2018.8540755","DOIUrl":"https://doi.org/10.1109/ICSTCC.2018.8540755","url":null,"abstract":"This work aims to show kinematics and dynamics modelling of a fixed-wing UAV type, as well as Proportional and Proportional, Integral and Derivative controllers for multirate cascade control loop, one internal for angular attitude and another external for the inertial position. The control loops are designed for roll, pitch, yaw, altitude and linear velocity in forwarding and backward aircraft nose direction. These dynamics are controlled by the integration of loops in different levels using the Successive Loop Closure technique. The results were satisfactory, considering that the simulation tests took into account the parameters of an already developed aircraft.","PeriodicalId":308427,"journal":{"name":"2018 22nd International Conference on System Theory, Control and Computing (ICSTCC)","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129188063","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}
Benedikt Haus, Jan Hendrik Rähl, Paolo Mercorelli, H. Aschemann
{"title":"Model Predictive Control for Switching Gain Adaptation in a Sliding Mode Controller of a DC Drive with Nonlinear Friction","authors":"Benedikt Haus, Jan Hendrik Rähl, Paolo Mercorelli, H. Aschemann","doi":"10.1109/ICSTCC.2018.8540681","DOIUrl":"https://doi.org/10.1109/ICSTCC.2018.8540681","url":null,"abstract":"This paper presents an optimal, robust, adaptive tuning strategy based on a linear model predictive control (LMPC) scheme for the switching gain of a sliding mode control (SMC). The LMPC employs a moving horizon, where the dynamics of the sliding-mode-controlled system is addressed. The control design is presented exemplary for a DC drive which is subject to both nonlinear friction as well as model uncertainty. The overall control has a cascade structure. In the inner control loop for the currents, a flatness-based control is used. The outer control loop involves an integral sliding mode control of the angular velocity that is combined with a LMPC that adapts the switching height of the discontinuous control action.","PeriodicalId":308427,"journal":{"name":"2018 22nd International Conference on System Theory, Control and Computing (ICSTCC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129630493","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}
{"title":"Gain scheduling controller design for wind systems using a data driven algorithm","authors":"A. Burlibaşa, M. Barbu, E. Ceanga","doi":"10.1109/ICSTCC.2018.8540774","DOIUrl":"https://doi.org/10.1109/ICSTCC.2018.8540774","url":null,"abstract":"The paper presents a data-based synthesis method for power control algorithm of a wind turbine in full-load operating region, within a general strategy of gain scheduling type. The proposed method is based on the existence of several efficient solutions for the generation of a detailed mathematical model for a high-power wind system that by its simulation in different operating regimes can provide the necessary data obtained for the design procedure. The synthesis of the control algorithm is based on the construction of a dynamic compensator which can quickly provide the parameters of a PI control law for the rotational speed loop. In the paper the effects of the drive train torsional vibrations in the controller synthesis are analyzed by numerical simulation. Some results obtained with the gain-scheduling control approach are also presented.","PeriodicalId":308427,"journal":{"name":"2018 22nd International Conference on System Theory, Control and Computing (ICSTCC)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129675608","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}
{"title":"Nonlinear battery modeling using continuous-time system identification methods and non-uniformly sampled data","authors":"Markus Kneissl, C. Hametner, Markus Dohr","doi":"10.1109/ICSTCC.2018.8540775","DOIUrl":"https://doi.org/10.1109/ICSTCC.2018.8540775","url":null,"abstract":"A battery model identification approach, based on non-uniformly sampled data, aiming to reflect the nonlinear dynamic behavior of a lithium-ion cell is presented in this work. To accurately predict the voltage response, the underlying model should reproduce the fast and slow dynamics of the battery cell. Therefore direct identification from non-uniformly sampled measurement data based on continuous-time model identification is applied. To take into account the nonlinear behavior of the battery, local linear model partitioning for the state of charge is performed. The resulting dynamic battery model is able to accurately predict the system response. With a parameter conversion to physically interpretable parameters, based on an equivalent circuit model, the parameter variance among similar cells and the temperature dependency of the model identification are investigated as well as the parameter characteristics over time. All results are based on non-uniformly sampled input output measurement data of three identical lithium-ion power cells.","PeriodicalId":308427,"journal":{"name":"2018 22nd International Conference on System Theory, Control and Computing (ICSTCC)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131020470","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}
{"title":"Discrete time reaching law based sliding mode control: a survey","authors":"P. Leśniewski","doi":"10.1109/ICSTCC.2018.8540782","DOIUrl":"https://doi.org/10.1109/ICSTCC.2018.8540782","url":null,"abstract":"The reaching law approach comprises of first specifying the required evolution of the sliding variable. Then, a sliding mode controller that enforces this evolution is designed. The main advantage of this method with respect to “classical” sliding mode control is better control of the plant dynamics and state constraints during the reaching phase. In this paper, a review of a number of new works on reaching laws for discrete time systems is presented. The differences and similarities between them are discussed.","PeriodicalId":308427,"journal":{"name":"2018 22nd International Conference on System Theory, Control and Computing (ICSTCC)","volume":"104 2 Pt 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131029318","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}
{"title":"Comparison of State Estimators for a Permanent Magnet Synchronous Generator","authors":"L. Gliga, H. Chafouk, D. Popescu, C. Lupu","doi":"10.1109/ICSTCC.2018.8540746","DOIUrl":"https://doi.org/10.1109/ICSTCC.2018.8540746","url":null,"abstract":"A Permanent Magnet Synchronous Generator is chosen as a case study for this comparison. A continous model with a discrete integrator is shown to be the best solution for the discretization of the nonlinear model. Then, the Kalman Filter (KF), the Extended Kalman Filter (EKF) and the Unscented Kalman Filter are compared. The results are presented and it is shown that the EKF is the best suited for this application. Moreover, a discussion regarding the behaviour of the filters follows, where all are shown to act like proportional controllers.","PeriodicalId":308427,"journal":{"name":"2018 22nd International Conference on System Theory, Control and Computing (ICSTCC)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131642999","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}
{"title":"On the Use of Agent-Based Modeling for Smart Farming","authors":"J. Lopez-Jimenez, N. Quijano, A. Wouwer","doi":"10.1109/ICSTCC.2018.8540760","DOIUrl":"https://doi.org/10.1109/ICSTCC.2018.8540760","url":null,"abstract":"In this paper, we investigate the possibility of using Agent-Based Models (ABMs) for describing a crop growing system. Even though ABMs have received increasing attention for modeling ecological systems, their use in modern farming is still limited. To develop such a model, a proper definition of the plants as agents can be provided following a standard protocol named ODD (overview, design concepts, and details). This description allows to define complex interaction between environment (e.g., soil, climatic conditions, and limited resources) and plants, and between plants. To validate this preliminary development, a comparative study is achieved with a classical crop-modeling environment, i.e., AquaCrop, using potato plants as sample crop.","PeriodicalId":308427,"journal":{"name":"2018 22nd International Conference on System Theory, Control and Computing (ICSTCC)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126646983","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}
A. Cristian, Rusu-Both Roxana, Dulf EvaHenrietta, Chira Romeo Ioan
{"title":"Lung Cancer Diagnosis based on Ultrasound image processing","authors":"A. Cristian, Rusu-Both Roxana, Dulf EvaHenrietta, Chira Romeo Ioan","doi":"10.1109/ICSTCC.2018.8540781","DOIUrl":"https://doi.org/10.1109/ICSTCC.2018.8540781","url":null,"abstract":"Cancer represents one of the leading causes of mortality in this century. Patients suffering from lung cancer (LC) have an average of 5 years life expectancy after diagnosis. This is due usually to late detection. The most common methods to detect lung cancer are computed tomography (CT) and magnetic resonance imaging (MRI). These investigations are invasive to the human body and are performed only based on a doctor’s recommendation, which comes usually after patients develop symptoms – hence the late detection of cancer. Nowadays transthoracic ultrasonography (TUS) and US-guided biopsy have gained a larger field in the management of patients with peripheral pulmonary nodules or masses. From the multiple ultrasonography (US) advantages which made it a wellestablished solution in the management of tumoral and nontumoral abdominal pathology, few stand out: it’s non-invasive and has reduced costs. However, until now transthoracic US is underused for lung cancer diagnosis because it can be hard to interpret to determine an accurate diagnosis. In this paper we aim to develop a software application for lung mass classification based on ultrasound image processing. This could be an important step in towards early detection of lung cancer, by introducing the transthoracic ultrasonography in the regular annual check-up, improving the life expectancy of patients or even complete recuperation.","PeriodicalId":308427,"journal":{"name":"2018 22nd International Conference on System Theory, Control and Computing (ICSTCC)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114378187","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}
{"title":"ICSTCC 2018 List Reviewers","authors":"","doi":"10.1109/icstcc.2018.8540700","DOIUrl":"https://doi.org/10.1109/icstcc.2018.8540700","url":null,"abstract":"","PeriodicalId":308427,"journal":{"name":"2018 22nd International Conference on System Theory, Control and Computing (ICSTCC)","volume":"150 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116674672","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}
{"title":"Accuracy Issues in Kalman Filtering State Estimation of Stiff Continuous-Discrete Stochastic Models Arisen in Engineering Research","authors":"G. Kulikov, M. V. Kulikova","doi":"10.1109/ICSTCC.2018.8540695","DOIUrl":"https://doi.org/10.1109/ICSTCC.2018.8540695","url":null,"abstract":"This paper aims at exploring accuracy of Kalman-like filters. Its particular interest lies in estimation of stochastic systems whose drift coefficients expose a stiff behavior. The latter means that the Jacobian of the drift coefficient in such a continuous-discrete system, which is presented by an Itô-type stochastic differential equation (SDE) for modeling the plant’s dynamic behavior and a discrete-time equation for simulating its measurement process, has large eigenvalues at the solution trajectory. Here, we employ the so-called “discrete-discrete” approach, which is grounded in SDE discretization schemes, and compare the outcome accuracy of EKF-, CKF- and UKF-type methods when these are based on the Euler-Maruyama and Itô-Taylor discretizations of the strong convergence orders 0.5 and 1.5 and applied for estimating the Van der Pol oscillator and Oregonator reaction models. We evidence that state estimation errors committed in our stiff stochastic scenarios are sensitive to both the type of Kalman filtering method utilized and the SDE discretization scheme implemented. So these must be chosen carefully in accurate and robust state estimation algorithms intended for treating stiff continuous-discrete stochastic systems.","PeriodicalId":308427,"journal":{"name":"2018 22nd International Conference on System Theory, Control and Computing (ICSTCC)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130133166","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}