New performance improvement techniques of control systems using experiment-based tuning, 339907 EUR, national exploratory research grant (PCE), financed by the Executive Agency for Higher Education, Research, Development and Innovation Funding - UEFISCDI), 2011-2016, project code: PN-II-ID-PCE-2011-3-0109

The team:

• Prof. Dr.-Ing. Radu-Emil Precup - director, principal investigator.
• Prof. Dr.-Ing. Stefan Preitl - senior staff member.
• Assoc. Prof. Dr.-Ing. Florin Drăgan - senior staff member.
• Lect. Dr.-Ing. Daniel Iercan - post doc.
• Lect. Dr.-Ing. Mircea-Bogdan Rădac - post doc.
• Lect. Dr.-Ing. Claudia-Adina Bojan-Dragoş - post doc.
• Assist. Lect. Dr.-Ing. Alexandra-Iulia Szedlak-Stînean - post doc (former Ph.D. student, Dr.-Ing. starting with February 2014).
• M.Sc. Dipl.-Ing. Lucian-Ovidiu Fedorovici - Ph.D. student.

Abstract:

• The experiment-based tuning to improve the performance of control systems (CSs) belongs to the data-based control (DbC) framework, where few information on the process is used to meet the CS design specifications. DbC techniques usually work offline after collecting batches of data from the open/closed-loop CS. Principal Investigator (PI)'s team will develop new DbC tuning techniques for certain CS structures. Their necessity and advantages over other tuning techniques are: no need for process identification, low cost design and implementation, convenient use of elaborated data processing techniques. Our techniques will be tested in process control in mechatronics applications (servo systems, actuators, 3D crane systems, etc.). The critical analysis of the CS performance and implementation costs of our techniques will be conducted by comparisons with other techniques to prove the improvement and to outline the attractiveness of our techniques to many other areas as well. This proposal is backed up by the results of PI's team in control structures and algorithms (including optimal and fuzzy ones) published in high impact leading journal papers (Automatica, IEEE Trans. Ind. Electron., Inf. Sci., Eng. Appl. Artif. Intell., etc.). This grant aims the funding of the research co-operation of PI's team reflected by five bilateral projects (2003-2010) and by more than 30 joint publications with teams from Canada, France, Germany, Hungary, Slovenia, The Netherlands and UK.

Objective:

• The general objective of the project concerns the generation of new data-based control (DbC) techniques focused on the CS performance improvement and dedicated to several CS and controller structures using the information from the real-time experiments conducted with the control systems (CSs). The achievement of this objective requires the achievement of the following particular objectives (1., 2., 3., 4., 5. and 6.) during the three years of the project:
• 1. The analysis, development and implementation of new improved Iterative Feedback Tuning (IFT) techniques.
• 2. The analysis, development and implementation of new hybrid DbC tuning techniques.
• 3. The development and implementation of low cost CSs with improved performance by the combination of DbC techniques with several CS and controller structures.
• 4. The exploitation and dissemination of results.
• 5. The management of activities.
• 6. The infrastructure development in accordance with the granted funds.

Estimated results:

• The publication of papers in high impact leading journals: minimum 15 papers, with cumulated impact factor according to Journal Citation Reports higher than 20, and cumulated relative influence score higher than 10.
• The participation and presentation of papers at leading international academic conferences: minimum 5 papers indexed in Thomson Reuters Web of Science (formerly ISI Web of Knowledge or ISI Proceedings) and minimum 10 papers indexed in international databases.

Research reports:

• Research report for 2011-2016 (in Romanian).
• Research report for 2015 (in Romanian).
• Research report for 2014 (in Romanian).
• Presentation of the results obtained in this project in the framework of the public presentation meeting, Bucharest, June 18, 2014 (in Romanian).
• Research report for 2011-2013 (in Romanian).
• Research report for 2012 (in Romanian).
• Research report for 2011 (in Romanian).

Overall results (2011-2016):

Results in 2016:

• 4 papers published in Thomson Reuters Web of Science (formerly ISI Web of Knowledge) journals with impact factors, cumulated impact factor according to 2015 Journal Citation Reports (JCR) released by Thomson Reuters in 2016 = 6.546, cumulated relative influence score = 4.890, 3 papers published in conference proceedings indexed in Thomson Reuters Web of Science (formerly ISI Web of Knowledge or ISI Proceedings), 4 papers published in conference proceedings indexed in international databases (IEEE Xplore, INSPEC, Scopus, DBLP), 2 book chapters published in Springer-Verlag volumes.

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• M.-B. Rădac and R.-E. Precup (corresponding author), Three-level hierarchical model-free learning approach to trajectory tracking control, Engineering Applications of Artificial Intelligence (Elsevier Science), vol. 55, pp. 103-118, 2016, impact factor (IF) = 2.368, IF according to 2015 Journal Citation Reports (JCR) released by Thomson Reuters in 2016 = 2.368, relative influence score = 2.116 (www.sciencedirect.com).
• R.-C. Roman, M.-B. Rădac and R.-E. Precup (corresponding author), Multi-input-multi-output system experimental validation of model-free control and virtual reference feedback tuning techniques, IET Control Theory & Applications, vol. 10, no. 12, pp. 1395-1403, 2016, impact factor (IF) = 1.957, IF according to 2015 Journal Citation Reports (JCR) released by Thomson Reuters in 2016 = 1.957, relative influence score = 1.856 (digital-library.theiet.org).
• M.-B. Rădac and R.-E. Precup (corresponding author), Model-free constrained data-driven iterative reference input tuning algorithm with experimental validation, International Journal of General Systems (Taylor & Francis), vol. 45, no. 4, pp. 455-476, 2016, impact factor (IF) = 1.677, IF according to 2015 Journal Citation Reports (JCR) released by Thomson Reuters in 2016 = 1.677, relative influence score = 0.605 (www.tandfonline.com).
• R.-C. Roman, M.-B. Rădac, R.-E. Precup and E. M. Petriu, Data-driven Model-Free Adaptive Control Tuned by Virtual Reference Feedback Tuning, Acta Polytechnica Hungarica, vol. 13, no. 1, pp. 83-96, 2016, impact factor (IF) = 0.544, IF according to 2015 Journal Citation Reports (JCR) released by Thomson Reuters in 2016 = 0.544, relative influence score = 0.313 (www.uni-obuda.hu/journal/).
• R.-E. Precup, R.-C. David, E. M. Petriu, A.-I. Szedlak-Stînean and C.-A. Bojan-Dragoş, Grey Wolf Optimizer-Based Approach to the Tuning of PI-Fuzzy Controllers with a Reduced Process Parametric Sensitivity, Proceedings of 4^th IFAC International Conference on Intelligent Control and Automation Sciences ICONS 2016, Reims, France, 2016, IFAC-PapersOnLine, vol. 48, no. 5, pp. 55-60, 2016, indexed in Thomson Reuters Web of Science (www.sciencedirect.com).
• M.-B. Rădac, R.-E. Precup and R.-C. Roman, Data-Driven Virtual Reference Feedback Tuning and Reinforcement Q-learning for Model-Free Position Control of an Aerodynamic System, Proceedings of 24^th Mediterranean Conference on Control and Automation MED'2016, Athens, Greece, pp. 1126-1132, 2016, indexed in Scopus, IEEE Xplore, INSPEC (ieeexplore.ieee.org).
• R.-E. Precup, T.-A. Teban, T. E. Alves de Oliveira and E. M. Petriu, Evolving Fuzzy Models for Myoelectric-based Control of a Prosthetic Hand, Proceedings of 2016 IEEE International Conference on Fuzzy Systems FUZZ-IEEE 2016, Vancouver, Canada, pp. 72-77, 2016, indexed in IEEE Xplore, INSPEC (ieeexplore.ieee.org).
• T.-A. Teban, R.-E. Precup, E.-I. Voişan, T. E. Alves de Oliveira and E. M. Petriu, Recurrent Dynamic Neural Network Model for Myoelectric-based Control of a Prosthetic Hand, Proceedings of 10^th Annual IEEE International Systems Conference SysCon 2016, Orlando, FL, USA, pp. 1-6, 2016, indexed in IEEE Xplore, INSPEC, Scopus (ieeexplore.ieee.org).
• C.-A. Bojan-Dragoş, R.-E. Precup, S. Preitl, A.-I. Szedlak-Stînean and E. M. Petriu, Particle Swarm Optimization of Fuzzy Models for Electromagnetic Actuated Clutch Systems, Proceedings of 18^th Mediterranean Electromechanical Conference MELECON 2016, Limassol, Cyprus, pp. 1-6, 2016, indexed in IEEE Xplore, INSPEC, Scopus (ieeexplore.ieee.org).
• R.-E. Precup, R.-C. David, E. M. Petriu, M.-B. Rădac and E.-I. Voişan, Experiment-Based Comparison of Nature-Inspired Algorithms for Optimal Tuning of PI-Fuzzy Controlled Nonlinear DC Servo Systems, Proceedings of 2016 International Symposium on Power Electronics, Electrical Drives, Automation and Motion SPEEDAM 2016, Capri, Italy, pp. 1261-1266, 2016, indexed in Thomson Reuters Web of Science (ieeexplore.ieee.org).
• E.-L. Hedrea, M.-B. Rădac and R.-E. Precup, Virtual Reference Feedback Tuning for Position Control of a Twin Rotor Aerodynamic System, Proceedings of 11^th IEEE International Symposium on Applied Computational Intelligence and Informatics SACI 2016, Timisoara, Romania, pp. 57-62, 2016, indexed in Thomson Reuters Web of Science (ieeexplore.ieee.org).
• R.-C. Roman, M.-B. Rădac, R.-E. Precup and E. M. Petriu, Virtual Reference Feedback Tuning of MIMO Data-Driven Model-Free Adaptive Control Algorithms, in: Technological Innovation for Cyber-Physical Systems, L. M. Camarinha-Matos, A. J. Falcao, N. Vafaei and S. Najdi, Eds., IFIP Advances in Information and Communication Technology, vol. 470 (Springer International Publishing), pp. 253-260, 2016, indexed in Scopus, DBLP (link.springer.com, link.springer.com).
• R.-E. Precup, E.-I. Voişan, E. M. Petriu, M.-B. Rădac and L.-O. Fedorovici, Gravitational Search Algorithm-Based Evolving Fuzzy Models of a Nonlinear Process, in: Informatics in Control, Automation and Robotics, J. Filipe, K. Madani, O. Gusikhin and J. Sasiadek, Eds., Lecture Notes in Electrical Engineering, vol. 383 (Springer International Publishing), pp. 51-62, 2016, indexed in Scopus (link.springer.com, link.springer.com).

Results in 2015:

• 7 papers published in Thomson Reuters Web of Science (formerly ISI Web of Knowledge) journals with impact factors, cumulated impact factor according to 2015 Journal Citation Reports (JCR) released by Thomson Reuters in 2016 = 12.499, cumulated relative influence score = 9.008, 3 papers published in conference proceedings indexed in Thomson Reuters Web of Science (formerly ISI Web of Knowledge or ISI Proceedings), 1 paper published in conference proceedings indexed in international databases (IEEE Xplore, INSPEC, Scopus, DBLP).

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• M.-B. Rădac, R.-E. Precup (corresponding author) and E. M. Petriu, Model-Free Primitive-Based Iterative Learning Control Approach to Trajectory Tracking of MIMO Systems With Experimental Validation, IEEE Transactions on Neural Networks and Learning Systems, vol. 26, no. 11, pp. 2925-2938, 2015, impact factor (IF) = 4.854, IF according to 2015 Journal Citation Reports (JCR) released by Thomson Reuters in 2016 = 4.854, relative influence score = 4.119 (ieeexplore.ieee.org).
• R.-E. Precup and M. L. Tomescu, Stable fuzzy logic control of a general class of chaotic systems, Neural Computing and Applications (Springer-Verlag), vol. 26, no. 3, pp. 541-550, 2015, impact factor (IF) = 1.492, IF according to 2015 Journal Citation Reports (JCR) released by Thomson Reuters in 2016 = 1.492, relative influence score = 0.649 (link.springer.com).
• M.-B. Rădac and R.-E. Precup (corresponding author), Data-based two-degree-of-freedom iterative control approach to constrained non-linear systems, IET Control Theory & Applications, vol. 9, no. 7, pp. 1000-1010, 2015, impact factor (IF) = 1.957, IF according to 2015 Journal Citation Reports (JCR) released by Thomson Reuters in 2016 = 1.957, relative influence score = 1.856 (digital-library.theiet.org).
• Cl. Pozna, R.-E. Precup (corresponding author) and P. Földesi, A novel pose estimation algorithm for robotic navigation, Robotics and Autonomous Systems (Elsevier Science), vol. 63, pp. 10-21, 2015, impact factor (IF) = 1.618, IF according to 2015 Journal Citation Reports (JCR) released by Thomson Reuters in 2016 = 1.618, relative influence score = 1.319 (www.sciencedirect.com).
• R.-E. Precup, E. M. Petriu, M.-B. Rădac, St. Preitl, L.-O. Fedorovici and C.-A. Dragoş, Cascade control system-based cost effective combination of tensor product model transformation and fuzzy control, Asian Journal of Control (John Wiley and Sons), vol. 17, no. 2, pp. 381-391, 2015, impact factor (IF) = 1.407, IF according to 2015 Journal Citation Reports (JCR) released by Thomson Reuters in 2016 = 1.407, relative influence score = 0.465 (onlinelibrary.wiley.com).
• R.-E. Precup, M. L. Tomescu and E. M. Petriu, A Unified Anti-Windup Technique for Fuzzy and Sliding Mode Controllers, International Journal of Computers, Communications & Control (Agora University Editing House - CCC Publications), vol. 10, no. 6, pp. 843-855, 2015, impact factor (IF) = 0.627, IF according to 2015 Journal Citation Reports (JCR) released by Thomson Reuters in 2016 = 0.627, relative influence score = 0.287 (univagora.ro/jour/).
• M.-B. Rădac, R.-E. Precup and E. M. Petriu, Constrained Data-Driven Model-Free ILC-based Reference Input Tuning Algorithm, Acta Polytechnica Hungarica, vol. 12, no. 1, pp. 137-160, 2015, impact factor (IF) = 0.544, IF according to 2015 Journal Citation Reports (JCR) released by Thomson Reuters in 2016 = 0.544, relative influence score = 0.313 (www.uni-obuda.hu/journal/).
• R.-C. Roman, M.-B. Rădac, R.-E. Precup and E. M. Petriu, Data-Driven Optimal Model-Free Control of Twin Rotor Aerodynamic Systems, Proceedings of 2015 IEEE International Conference on Industrial Technology ICIT 2015, Seville, Spain, pp. 161-166, 2015, indexed in Thomson Reuters Web of Science (ieeexplore.ieee.org).
• M.-B. Rădac, R.-E. Precup and E. M. Petriu, Optimal Motion Prediction Using a Primitive-based Model-Free Iterative Control Approach for Crane Systems, Proceedings of 2015 IEEE International Conference on Industrial Technology ICIT 2015, Seville, Spain, pp. 366-372, 2015, indexed in Thomson Reuters Web of Science (ieeexplore.ieee.org).
• R.-E. Precup, A.-D. Balint, M.-B. Rădac and E. M. Petriu, Backtracking Search Optimization Algorithm-based approach to PID controller tuning for torque motor systems, Proceedings of 2015 9^th Annual IEEE International Systems Conference SysCon 2015, Vancouver, BC, Canada, pp. 127-132, 2015, indexed in Thomson Reuters Web of Science (ieeexplore.ieee.org).
• R.-E. Precup, E.-I. Voişan, E. M. Petriu, M.-B. Rădac and L.-O. Fedorovici, Implementation of Evolving Fuzzy Models of a Nonlinear Process, Proceedings of 12^th International Conference on Informatics in Control, Automation and Robotics ICINCO 2015, Colmar, Alsace, France, vol. 1, pp. 5-14, 2015, indexed in IEEE Xplore, INSPEC, Scopus, DBLP (www.scitepress.org).

Results in 2014:

• 7 papers published in Thomson Reuters Web of Science (formerly ISI Web of Knowledge) journals with impact factors, cumulated impact factor according to 2015 Journal Citation Reports (JCR) released by Thomson Reuters in 2016 = 17.374, cumulated relative influence score = 11.350, 8 papers in conference proceedings and book chapters indexed in Thomson Reuters Web of Science (formerly ISI Web of Knowledge or ISI Proceedings), 1 paper published in conference proceedings indexed in international databases (IEEE Xplore, INSPEC, Scopus), 1 book chapter published in Springer-Verlag volume, 1 doctoral thesis that includes results obtained in the framework of this project, defended by one of the members of the team in 2014.

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• M.-B. Rădac, R.-E. Precup (corresponding author), E. M. Petriu and St. Preitl, Iterative Data-Driven Tuning of Controllers for Nonlinear Systems with Constraints, IEEE Transactions on Industrial Electronics, vol. 61, no. 11, pp. 6360-6368, 2014, impact factor (IF) = 6.498, IF according to 2015 Journal Citation Reports (JCR) released by Thomson Reuters in 2016 = 6.383, relative influence score = 4.518 (ieeexplore.ieee.org).
• R.-E. Precup, R.-C. David, E. M. Petriu, M.-B. Rădac and St. Preitl, Adaptive GSA-Based Optimal Tuning of PI Controlled Servo Systems With Reduced Process Parametric Sensitivity, Robust Stability and Controller Robustness, IEEE Transactions on Cybernetics, vol. 44, no. 11, pp. 1997-2009, 2014, impact factor (IF) = 3.469, IF according to 2015 Journal Citation Reports (JCR) released by Thomson Reuters in 2016 = 4.943, relative influence score = 3.472 (ieeexplore.ieee.org).
• R.-E. Precup, R.-C. David, E. M. Petriu, St. Preitl and M.-B. Rădac, Novel Adaptive Charged System Search Algorithm for Optimal Tuning of Fuzzy Controllers, Expert Systems with Applications (Elsevier Science), vol. 41, no. 4, part 1, pp. 1168-1175, 2014, impact factor (IF) = 2.240, IF according to 2015 Journal Citation Reports (JCR) released by Thomson Reuters in 2016 = 2.981, relative influence score = 1.696 (www.sciencedirect.com).
• R.-E. Precup, M.-L. Tomescu and C.-A. Dragoş, Stabilization of Rössler chaotic dynamical system using fuzzy logic control algorithm, International Journal of General Systems (Taylor & Francis), vol. 43, no. 5, pp. 413-433, 2014, impact factor (IF) = 1.637, IF according to 2015 Journal Citation Reports (JCR) released by Thomson Reuters in 2016 = 1.677, relative influence score = 0.605 (www.tandfonline.com).
• Cl. Pozna and R.-E. Precup, Applications of Signatures to Expert Systems Modelling, Acta Polytechnica Hungarica (Óbuda University), vol. 11, no. 2, pp. 21-39, 2014, impact factor (IF) = 0.649, IF according to 2015 Journal Citation Reports (JCR) released by Thomson Reuters in 2016 = 0.544, relative influence score = 0.313 (www.uni-obuda.hu/journal/).
• R. S. Fantana, N. Minculete and R.-E. Precup, Extension of Liskov Substitution Principle and Application to Curriculum Management, Acta Polytechnica Hungarica (Óbuda University), vol. 11, no. 7, pp. 25-42, 2014, impact factor (IF) = 0.649, IF according to 2015 Journal Citation Reports (JCR) released by Thomson Reuters in 2016 = 0.544, relative influence score = 0.313 (www.uni-obuda.hu/journal/).
• M.-B. Rădac, R.-E. Precup (corresponding author), E. M. Petriu and St. Preitl, Iterative Data-Driven Controller Tuning with Actuator Constraints and Reduced Sensitivity, Journal of Aerospace Information Systems (The American Institute of Aeronautics and Astronautics), vol. 11, no. 9, pp. 551-564, 2014, impact factor (IF) = 0.213, IF according to 2015 Journal Citation Reports (JCR) released by Thomson Reuters in 2016 = 0.302, relative influence score = 0.433 (arc.aiaa.org, www.mbradac.info).
• R.-E. Precup, M.-B. Rădac, C.-A. Dragoş, St. Preitl and E. M. Petriu, Model-Free Tuning Solution for Sliding Mode Control of Servo Systems, Proceedings of 8^th Annual IEEE International Systems Conference SysCon 2014, Ottawa, ON, Canada, pp. 30-35, 2014, indexed in Thomson Reuters Web of Science (ieeexplore.ieee.org).
• R.-C. Roman, M.-B. Rădac and R.-E. Precup, Data-Driven Model-Free Adaptive Control of Twin Rotor Aerodynamic Systems, Proceedings of IEEE 9^th International Symposium on Applied Computational Intelligence and Informatics SACI 2014, Timisoara, Romania, 2014, pp. 25-30, indexed in Thomson Reuters Web of Science (ieeexplore.ieee.org).
• A.-I. Stînean, St. Preitl, R.-E. Precup and M. Crainic, Study on Experimental Plant of Positioning Control Solutions for Processes with Variable Moment of Inertia, Proceedings of IEEE 9^th International Symposium on Applied Computational Intelligence and Informatics SACI 2014, Timisoara, Romania, 2014, pp. 37-42, indexed in Thomson Reuters Web of Science (ieeexplore.ieee.org).
• M.-B. Rădac, R.-E. Precup and E. M. Petriu, Design and Testing of a Constrained Data-Driven Iterative Reference Input Tuning Algorithm, Proceedings of 2014 European Control Conference ECC 2014, Strasbourg, France, pp. 2034-2039, 2014, indexed in Thomson Reuters Web of Science (ieeexplore.ieee.org, controls.papercept.net).
• R.-E. Precup, A.-L. Borza, M.-B. Rădac and E. M. Petriu, Bacterial Foraging Optimization Approach to the Controller Tuning for Automotive Torque Motors, Proceedings of IEEE 23^rd International Symposium on Industrial Electronics ISIE 2014, Istanbul, Turkey, pp. 972-977, 2014, indexed in Thomson Reuters Web of Science (ieeexplore.ieee.org).
• R.-E. Precup, R.-C. David, A.-I. Stînean, M.-B. Rădac and E. M. Petriu, Adaptive Hybrid Particle Swarm Optimization-Gravitational Search Algorithm for Fuzzy Controller Tuning, Proceedings of 2014 IEEE International Symposium on Innovations in Intelligent Systems and Applications INISTA 2014, Alberobello, Italy, pp. 14-20, 2014, indexed in Thomson Reuters Web of Science (ieeexplore.ieee.org).
• M.-B. Rădac, R.-C. Roman, R.-E. Precup and E. M. Petriu, Data-Driven Model-Free Control of Twin Rotor Aerodynamic Systems: Algorithms and Experiments, Proceedings of 2014 IEEE International Symposium on Intelligent Control ISIC 2014 Part of 2014 IEEE Multi-conference on Systems and Control IEEE MSC 2014, Antibes, France, pp. 1889-1894, 2014, indexed in Thomson Reuters Web of Science (ieeexplore.ieee.org).
• R.-E. Precup, A.-L. Borza, M.-B. Rădac and E. M. Petriu, Performance Analysis of Torque Motor Systems with PID Controllers Tuned by Bacterial Foraging Optimization Algorithms, Proceedings of 2014 IEEE International Conference on Computational Intelligence and Virtual Environments for Measurement Systems and Applications CIVEMSA 2014, Ottawa, ON, Canada, pp. 141-146, 2014, indexed in IEEE Xplore, INSPEC (ieeexplore.ieee.org).
• R.-C. David, R.-E. Precup, E. M. Petriu, St. Preitl, M.-B. Rădac and L.-O. Fedorovici, Adaptive Evolutionary Optimization Algorithms for Simple Fuzzy Controller Tuning Dedicated to Servo Systems, in: Fuzzy Modeling and Control: Theory and Applications, F. Matia, G. N. Marichal and E. Jimenez, Eds., Atlantis Computational Intelligence Systems, vol. 9 (Atlantis Press and Springer-Verlag), pp. 159-173, 2014, indexed in Thomson Reuters Web of Science (link.springer.com, link.springer.com).
• St. Preitl, R.-E. Precup, Z. Preitl, A.-I. Stînean, M.-B. Rădac and C.-A. Dragoş, Control Algorithms for Plants Operating Under Variable Conditions, Applications, in: Advances in Soft Computing, Intelligent Robotics and Control, J. Fodor and R. Fuller, Eds., Topics in Intelligent Engineering and Informatics, vol. 8 (Springer-Verlag), pp. 3-39, 2014 (link.springer.com, link.springer.com).
• 1 doctoral thesis that includes results obtained in the framework of this project: Contributions to the development of control solutions dedicated to electrical driving systems with variable parameters and time-variable inputs, defended by Alexandra-Iulia Stînean, Politehnica University of Timisoara, February 2014, supervisor: Prof.Dr.-Ing. Stefan Preitl (Abstract (in Romanian), Committee's report (in Romanian)).

Results in 2013:

• 7 papers published in Thomson Reuters Web of Science (formerly ISI Web of Knowledge) journals with impact factors, cumulated impact factor according to 2015 Journal Citation Reports (JCR) released by Thomson Reuters in 2016 = 16.293, cumulated relative influence score = 10.496, 1 paper published in journal indexed in international databases (Zentrallblatt MATH), 9 papers published in conference proceedings indexed in Thomson Reuters Web of Science (formerly ISI Web of Knowledge or ISI Proceedings), 1 paper published in conference proceedings indexed in international databases (IEEE Xplore, INSPEC, Scopus), 2 book chapters published in Springer-Verlag volumes, Certificate of Appreciation for the Best Paper in the Session TT07 1 Control Theory at 39^th Annual Conference of the IEEE Industrial Electronics Society IECON 2013 (Vienna, Austria).

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• R.-E. Precup, M.-B. Rădac, M. L. Tomescu, E. M. Petriu and St. Preitl, Stable and convergent iterative feedback tuning of fuzzy controllers for discrete-time SISO systems, Expert Systems with Applications (Elsevier Science), vol. 40, no. 1, pp. 188-199, 2013, impact factor (IF) = 1.965, IF according to 2015 Journal Citation Reports (JCR) released by Thomson Reuters in 2016 = 2.981, relative influence score = 1.696 (www.sciencedirect.com, dl.acm.org).
• R.-C. David, R.-E. Precup (corresponding author), E. M. Petriu, M.-B. Rădac and St. Preitl, Gravitational Search Algorithm-Based Design of Fuzzy Control Systems with a Reduced Parametric Sensitivity, Information Sciences (Elsevier Science), vol. 247, pp. 154-173, 2013, impact factor (IF) = 3.893, IF according to 2015 Journal Citation Reports (JCR) released by Thomson Reuters in 2016 = 3.364, relative influence score = 2.063 (www.sciencedirect.com).
• M.-B. Rădac, R.-E. Precup (corresponding author), E. M. Petriu, St. Preitl and C.-A. Dragoş, Data-driven reference trajectory tracking algorithm and experimental validation, IEEE Transactions on Industrial Informatics, vol. 9, no. 4, pp. 2327-2336, 2013, impact factor (IF) = 8.785, IF according to 2015 Journal Citation Reports (JCR) released by Thomson Reuters in 2016 = 4.708, relative influence score = 3.857 (ieeexplore.ieee.org).
• R.-E. Precup, R.-C. David, E. M. Petriu, St. Preitl and M.-B. Rădac, Fuzzy logic-based adaptive gravitational search algorithm for optimal tuning of fuzzy controlled servo systems, IET Control Theory & Applications, vol. 7, no. 1, pp. 99-107, 2013, impact factor (IF) = 1.844, IF according to 2015 Journal Citation Reports (JCR) released by Thomson Reuters in 2016 = 1.957, relative influence score = 1.856 (digital-library.theiet.org).
• R.-E. Precup, M. L. Tomescu, St. Preitl, E. M. Petriu, J. Fodor and Cl. Pozna, Stability analysis and design of a class of MIMO fuzzy control systems, Journal of Intelligent & Fuzzy Systems (IOS Press), vol. 25, no. 1, pp. 145-155, 2013, impact factor (IF) = 0.936, IF according to 2015 Journal Citation Reports (JCR) released by Thomson Reuters in 2016 = 1.004, relative influence score = 0.282 (iospress.metapress.com).
• M.-B. Rădac, R.-E. Precup (corresponding author), E. M. Petriu and St. Preitl, Experiment-based Performance Improvement of State Feedback Control Systems for Single Input Processes, Acta Polytechnica Hungarica (Óbuda University), vol. 10, no. 1, pp. 5-24, 2013, impact factor (IF) = 0.471, IF according to 2015 Journal Citation Reports (JCR) released by Thomson Reuters in 2016 = 0.544, relative influence score = 0.313 (uni-obuda.hu/journal/).
• R.-E. Precup, R.-C. David, E. M. Petriu, St. Preitl and M.-B. Rădac, Experiments in fuzzy controller tuning based on an adaptive gravitational search algorithm, Proceedings of the Romanian Academy, Series A: Mathematics, Physics, Technical Sciences, Information Science (Editura Academiei Romane, Bucharest), vol. 14, no. 4, pp. 360-367, 2013, impact factor (IF) = 1.115, IF according to 2015 Journal Citation Reports (JCR) released by Thomson Reuters in 2016 = 1.735, relative influence score = 0.429 (www.academiaromana.ro).
• R.-E. Precup, C.-A. Dragoş, St. Preitl, E. M. Petriu and M.-B. Rădac, A simple fuzzy control design for powertrain systems with three inertias, Memoirs of the Scientific Sections of the Romanian Academy (Editura Academiei Romane, Bucharest), Tome XXXVI, pp. 97-110, 2013, indexed in Zentrallblatt MATH (www.academiaromana-is.ro).
• M.-B. Rădac, R.-E. Precup, E. M. Petriu, St. Preitl and C.-A. Dragoş, Constrained Data-Driven Controller Tuning for Nonlinear Systems (Certificate of Appreciation for the Best Paper in the Session TT07 1 Control Theory), Proceedings of 39^th Annual Conference of the IEEE Industrial Electronics Society IECON 2013, Vienna, Austria, pp. 3402-3407, 2013, indexed in Thomson Reuters Web of Science (ieeexplore.ieee.org).
• A.-I. Stînean, St. Preitl, R.-E. Precup, C.-A. Dragoş, M.-B. Rădac and E. M. Petriu, Modeling and Control of An Electric Drive System with Continuously Variable Reference, Moment of Inertia and Load Disturbance, Proceedings of 9^th Asian Control Conference ASCC 2013, Istanbul, Turkey, paper 585, 6 pp., 2013, indexed in Thomson Reuters Web of Science (ieeexplore.ieee.org).
• M.-B. Rădac, R.-A. Achimescu, R.-E. Precup, St. Preitl, C.-A. Dragoş and A.-I. Stînean, Design and Experiments for Model-Free PI Control of DC Drives, Proceedings of IEEE 8^th International Symposium on Applied Computational Intelligence and Informatics SACI 2013, Timisoara, Romania, pp. 103-108, 2013, indexed in Thomson Reuters Web of Science (ieeexplore.ieee.org).
• A.-I. Stînean, St. Preitl, R.-E. Precup, C.-A. Dragoş, E. M. Petriu and M.-B. Rădac, 2-DOF Control Solutions for an Electric Drive System under Continuously Variable Conditions, Proceedings of IEEE 8^th International Symposium on Applied Computational Intelligence and Informatics SACI 2013, Timisoara, Romania, pp. 115-120, 2013, indexed in Thomson Reuters Web of Science (ieeexplore.ieee.org).
• A.-I. Stînean, St. Preitl, R.-E. Precup, C.-A. Dragoş, M.-B. Rădac and E. M. Petriu, Low-Cost Neuro-Fuzzy Control Solution for Servo Systems with Variable Parameters, Proceedings of 2013 IEEE International Conference on Computational Intelligence and Virtual Environments for Measurement Systems and Applications CIVEMSA 2013, Milano, Italy, pp. 156-161, indexed in Thomson Reuters Web of Science (ieeexplore.ieee.org).
• R.-E. Precup, M.-B. Rădac, E. M. Petriu, C.-A. Dragoş, St. Preitl and A.-I. Stînean, Data-Driven Performance Improvement of Control Systems for Three-Tank Systems, Proceedings of 2013 6^th International Conference on Human System Interactions (HSI 2013), Gdansk, Sopot, Poland, pp. 306-311, 2013, indexed in Thomson Reuters Web of Science (ieeexplore.ieee.org).
• A.-I. Stînean, St. Preitl, R.-E. Precup, C.-A. Dragoş, E. M. Petriu and M.-B. Rădac, Solutions to Avoid the Worst Case Scenario in Driving Systems Working Under Continuously Variable Conditions, Proceedings of IEEE 9^th International Conference on Computational Cybernetics ICCC 2013, Tihany, Hungary, pp. 339-344, 2013, indexed in Thomson Reuters Web of Science (ieeexplore.ieee.org).
• M.-B. Rădac, R.-C. Roman, R.-E. Precup, E. M. Petriu, C.-A. Dragoş and St. Preitl, Data-based Tuning of Linear Controllers for MIMO Twin Rotor Systems, Proceedings of IEEE Region 8 EuroCon 2013 Conference, Zagreb, Croatia, pp. 1915-1920, 2013, indexed in Thomson Reuters Web of Science (ieeexplore.ieee.org).
• A.-I. Stînean, St. Preitl, R.-E. Precup, C.-A. Dragoş, M.-B. Rădac and M. Crainic, Adaptable fuzzy control solutions for driving systems working under continuously variable conditions, Proceedings of 14^th IEEE International Symposium on Computational Intelligence and Informatics CINTI 2013, Budapest, Hungary, pp. 231-237, 2013, indexed in Thomson Reuters Web of Science (ieeexplore.ieee.org).
• A.-I. Stînean, St. Preitl, R.-E. Precup, C.-A. Dragoş, E. M. Petriu and M.-B. Rădac, Choosing a Proper Control Structure for a Mechatronic System with Variable Parameters, Proceedings of 2^nd IFAC Workshop on Convergence of Information Technologies and Control Methods with Power Systems ICPS'13, Cluj-Napoca, Romania, D. Moga and P. Dobra, Eds., pp. 26-31, 2013, indexed in Scopus (www.ifac-papersonline.net).
• A.-I. Stînean, St. Preitl, R.-E. Precup, C.-A. Dragoş and M.-B. Rădac, Classical and Fuzzy Approaches to 2-DOF Control Solutions for BLDC-m Drives, in: Intelligent Systems: Models and Applications, E. Pap, Ed., Topics in Intelligent Engineering and Informatics, vol. 3 (Springer-Verlag), pp. 175-193, 2013 (link.springer.com, link.springer.com).
• R.-E. Precup, F.-C. Enache, M.-B. Rădac, E. M. Petriu, St. Preitl and C.-A. Dragoş, Lead-Lag Controller-Based Iterative Learning Control Algorithms for 3D Crane Systems, in: Aspects of Computational Intelligence: Theory and Applications, L. Madarász and J. Živčák, Eds., Topics in Intelligent Engineering and Informatics, vol. 2 (Springer-Verlag), pp. 25-38, 2013 (link.springer.com, link.springer.com).

Results in 2012:

• 8 papers published in Thomson Reuters Web of Science (formerly ISI Web of Knowledge) journals with impact factors, cumulated impact factor according to 2015 Journal Citation Reports (JCR) released by Thomson Reuters in 2016 = 14.801, cumulated relative influence score = 10.782, 6 papers published in conference proceedings indexed in Thomson Reuters Web of Science (formerly ISI Web of Knowledge or ISI Proceedings), 10 papers published in conference proceedings indexed in international databases (IEEE Xplore, INSPEC, DBLP, Scopus), 3 book chapters published in Springer-Verlag volumes.

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• R.-E. Precup, M. L. Tomescu, M.-B. Rădac, E. M. Petriu, St. Preitl and C.-A. Dragoş, Iterative performance improvement of fuzzy control systems for three tank systems, Expert Systems with Applications (Elsevier Science), vol. 39, no. 9, pp. 8288-8299, 2012, impact factor (IF) = 1.854, IF according to 2015 Journal Citation Reports (JCR) released by Thomson Reuters in 2016 = 2.981, relative influence score = 1.696 (www.sciencedirect.com, dl.acm.org).
• Cl. Pozna, N. Minculete, R.-E. Precup (corresponding author), L. T. Kóczy and Á. Ballagi, Signatures: Definitions, operators and applications to fuzzy modeling, Fuzzy Sets and Systems (Elsevier Science), vol. 201, pp. 86-104, 2012, impact factor (IF) = 1.749, IF according to 2015 Journal Citation Reports (JCR) released by Thomson Reuters in 2016 = 2.098, relative influence score = 1.030 (www.sciencedirect.com, dl.acm.org).
• R.-E. Precup, R.-C. David, E. M. Petriu, St. Preitl and M.-B. Rădac, Novel adaptive gravitational search algorithm for fuzzy controlled servo systems, IEEE Transactions on Industrial Informatics, vol. 8, no. 4, pp. 791-800, 2012, impact factor (IF) = 3.381, IF according to 2015 Journal Citation Reports (JCR) released by Thomson Reuters in 2016 = 4.708, relative influence score = 3.857 (ieeexplore.ieee.org).
• R.-E. Precup, C.-A. Dragoş, St. Preitl, M.-B. Rădac and E. M. Petriu, Novel tensor product models for automatic transmission system control, IEEE Systems Journal, vol. 6, no. 3, pp. 488-498, 2012, impact factor (IF) = 1.270, IF according to 2015 Journal Citation Reports (JCR) released by Thomson Reuters in 2016 = 2.114, relative influence score = 2.061 (ieeexplore.ieee.org).
• T. Haidegger, L. Kovács, R.-E. Precup, B. Benyó, Z. Benyó and St. Preitl, Simulation and control for telerobots in space medicine, Acta Astronautica (Elsevier Science), vol. 181, no. 1, pp. 390-402, 2012, impact factor (IF) = 0.701, IF according to 2015 Journal Citation Reports (JCR) released by Thomson Reuters in 2016 = 1.095, relative influence score = 1.231 (www.sciencedirect.com).
• R.-E. Precup, T. Haidegger, St. Preitl, B. Benyó, A. S. Paul and L. Kovács, Fuzzy control solution for telesurgical applications, Applied and Computational Mathematics (Ministry of Communications and Information Technology, Azerbaijan National Academy of Sciences and Institute of Applied Mathematics of Baku State University), vol. 11, no. 3, pp. 378-397, 2012, impact factor (IF) = 0.750, IF according to 2015 Journal Citation Reports (JCR) released by Thomson Reuters in 2016 = 0.717, relative influence score = 0.281 (www.acmij.az).
• Cl. Pozna and R.-E. Precup, Aspects concerning the observation process modelling in the framework of cognition processes, Acta Polytechnica Hungarica (Óbuda University), vol. 9, no. 1, pp. 203-223, 2012, impact factor (IF) = 0.588, IF according to 2015 Journal Citation Reports (JCR) released by Thomson Reuters in 2016 = 0.544, relative influence score = 0.313 (uni-obuda.hu/journal/).
• R.-E. Precup, M. L. Tomescu, E. M. Petriu, St. Preitl and C.-A. Dragoş, Stable design of a class of nonlinear discrete-time MIMO fuzzy control systems, Acta Polytechnica Hungarica (Óbuda University), vol. 9, no. 2, pp. 57-76, 2012, impact factor (IF) = 0.588, IF according to 2015 Journal Citation Reports (JCR) released by Thomson Reuters in 2016 = 0.544, relative influence score = 0.313 (uni-obuda.hu/journal/).
• B.-S. Cerveneak, M.-B. Rădac, R.-E. Precup, A.-I. Stînean, E. M. Petriu, St. Preitl and C.-A. Dragoş, Novel Iterative Formulation of Correlation-Based Tuning, Proceedings of 2012 IEEE International Conference on Industrial Technology ICIT 2012, Athens, Greece, pp. 898-903, 2012, indexed in Thomson Reuters Web of Science (ieeexplore.ieee.org).
• R.-E. Precup, M.-B. Rădac, H.-I. Filip, St. Preitl, C.-A. Dragoş and E. M. Petriu, Signal Processing in Iterative Improvement of Inverted Pendulum Crane Mode Control System Performance, Proceedings of 2012 IEEE International Instrumentation and Measurement Technology Conference I2MTC 2012, Graz, Austria, pp. 812-815, 2012, indexed in Thomson Reuters Web of Science (ieeexplore.ieee.org).
• C.-A. Dragoş, St. Preitl, R.-E. Precup, E. M. Petriu and A.-I. Stînean, Adaptive Control Solutions for the Position Control of Electromagnetic Actuated Clutch Systems, Proceedings of 2012 IEEE Intelligent Vehicles Symposium IEEE IV'12, Alcala de Henares, Spain, pp. 81-86, 2012, indexed in Thomson Reuters Web of Science (ieeexplore.ieee.org).
• St. Preitl, R.-E. Precup, A.-I. Stînean, C.-A. Dragoş and M.-B. Rădac, Control structures for variable inertia output coupled drives, Proceedings of 4^th IEEE International Symposium on Logistics and Industrial Informatics LINDI 2012, Smolenice, Slovakia, pp. 179-184, 2012, indexed in Thomson Reuters Web of Science (ieeexplore.ieee.org).
• M.-B. Rădac, R.-E. Precup, E. M. Petriu, B.-S. Cerveneak, C.-A. Dragoş and St. Preitl, Stable Iterative Correlation-Based Tuning Algorithm for Servo Systems, Proceedings of 38^th Annual Conference of the IEEE Industrial Electronics Society IECON 2012, Montreal, QC, Canada, pp. 2500-2505, 2012, indexed in Thomson Reuters Web of Science (ieeexplore.ieee.org).
• M.-B. Rădac, R.-E. Precup, E. M. Petriu, St. Preitl and C.-A. Dragoş, Experiment-Based Approach to Reference Trajectory Tracking, Proceedings of 2012 IEEE International Conference on Control Applications (CCA), Part of 2012 IEEE Multi-Conference on Systems and Control, Dubrovnik, Croatia, pp. 470-475, 2012, indexed in Thomson Reuters Web of Science (ieeexplore.ieee.org).
• A.-I. Stînean, St. Preitl, R.-E. Precup, E. M. Petriu, C.-A. Dragoş and M.-B. Rădac, 2-DOF PI(D) Takagi-Sugeno and Sliding Mode Controllers for BLDC Drives, Proceedings of 15^th International Power Electronics and Motion Control Conference EPE-PEMC 2012 ECCE Europe, Novi Sad, Serbia, pp. DS2a.7-1-DS2a.7-6, 2012, indexed in IEEE Xplore, INSPEC (ieeexplore.ieee.org).
• A.-I. Stînean, St. Preitl, R.-E. Precup, E. M. Petriu, C.-A. Dragoş and M.-B. Rădac, Takagi-Sugeno Fuzzy Control Solutions for BLDC Drives, Proceedings of 2012 International Symposium on Power Electronics, Electrical Drives, Automation and Motion SPEEDAM 2012, Sorrento, Italy, pp. 724-729, 2012, indexed in IEEE Xplore, INSPEC (ieeexplore.ieee.org).
• A.-I. Stînean, St. Preitl, R.-E. Precup, C.-A. Dragoş and M.-B. Rădac, Hybrid Fuzzy Control Solutions for Brushless DC Drives with Variable Moment of Inertia, Proceedings of IEEE 10^th Jubilee International Symposium on Intelligent Systems and Informatics SISY 2012, Subotica, Serbia, pp. 317-322, 2012, indexed in IEEE Xplore, INSPEC (ieeexplore.ieee.org).
• R.-C. David, R.-E. Precup, E. M. Petriu, M.-B. Rădac, C. Purcaru, C.-A. Dragoş and St. Preitl, Adaptive Gravitational Search Algorithm for PI-fuzzy Controller Tuning, Proceedings of 9^th International Conference on Informatics in Control, Automation and Robotics ICINCO 2012, Rome, Italy, vol. 1, pp. 136-141, 2012, indexed in DBLP (www.scitepress.org).
• M.-B. Rădac, B.-A. Bigher, R.-E. Precup, E. M. Petriu, C.-A. Dragoş, St. Preitl and A.-I. Stînean, Data-based Tuning of PI Controllers for Vertical Three-Tank Systems, Proceedings of 9^th International Conference on Informatics in Control, Automation and Robotics ICINCO 2012, Rome, Italy, vol. 1, pp. 31-39, 2012, indexed in DBLP (www.scitepress.org).
• L.-O. Fedorovici, R.-E. Precup, F. Drăgan, R.-C. David and C. Purcaru, Embedding Gravitational Search Algorithms in Convolutional Neural Networks for OCR Applications, Proceedings of IEEE 7^th International Symposium on Applied Computational Intelligence and Informatics SACI 2012, Timisoara, Romania, pp. 125-130, 2012, indexed in IEEE Xplore, INSPEC (ieeexplore.ieee.org).
• R.-E. Precup, St. Preitl, A.-I. Stînean, C.-A. Dragoş and M.-B. Rădac, Hybrid Fuzzy Controllers for Non-Minimum Phase Systems, Proceedings of IEEE 7^th International Symposium on Applied Computational Intelligence and Informatics SACI 2012, Timisoara, Romania, pp. 23-28, 2012, indexed in IEEE Xplore, INSPEC (ieeexplore.ieee.org).
• C. Purcaru, D. Iercan, R.-E. Precup, S. Enache, B. Dohangie and L.-O. Fedorovici, nRobotic Applications to Path Planning for Mobile Robots in Missions, Proceedings of 2012 16^th International Conference on System Theory, Control and Computing ICSTCC 2012, Sinaia, Romania, paper 43, 6 pp., 2012, indexed in IEEE Xplore, INSPEC (ieeexplore.ieee.org).
• St. Preitl, A.-I. Stînean, R.-E. Precup, Zs. Preitl, E. M. Petriu, C.-A. Dragoş and M.-B. Rădac, Controller Design Methods for Driving Systems Based on Extensions of Symmetrical Optimum Method with DC and BLDC Motor Applications, Proceedings of 2^nd IFAC Conference on Advances in PID Control PID'12, Brescia, Italy, Advances in PID Control, vol. 2, R. Vilanova and A. Visioli, Eds., pp. 264-269, 2012, indexed in Scopus (www.ifac-papersonline.net, www.nt.ntnu.no/users/skoge/).
• R.-E. Precup, R.-C. David, E. M. Petriu, St. Preitl and M.-B. Rădac, Charged System Search Algorithms for Optimal Tuning of PI Controllers, Proceedings of 1^st IFAC Conference on Embedded Systems, Computational Intelligence and Telematics in Control CESCIT 2012, Würzburg, Germany, K. Schilling and E. Leutert, Eds., pp. 115-120, 2012, indexed in Scopus (www.ifac-papersonline.net).
• R.-C. David, R.-E. Precup, St. Preitl, J. K. Tar and J. Fodor, Three Evolutionary Optimization Algorithms in PI Controller Tuning, in: Applied Computational Intelligence in Engineering and Information Technology, R.-E. Precup, Sz. Kovács, St. Preitl and E. M. Petriu, Eds., Topics in Intelligent Engineering and Informatics, vol. 1 (Springer-Verlag), pp. 95-106, 2012 (link.springer.com, link.springer.com).
• L.-O. Fedorovici, R.-E. Precup, R.-C. David and F. Drăgan, GSA-Based Training of Convolutional Neural Networks for OCR Applications, in: Computational Intelligence Systems in Industrial Engineering, C. Kahraman, Ed., Atlantis Computational Intelligence Systems, vol. 6 (Atlantis Press and Springer-Verlag), pp. 481-504, 2012 (link.springer.com, link.springer.com).
• St. Preitl, A.-I. Stînean, R.-E. Precup, C.-A. Dragoş and M.-B. Rădac, 2-DOF and Fuzzy Control Extensions of Symmetrical Optimum Design Method: Applications and Perspectives, in: Applied Computational Intelligence in Engineering and Information Technology, R.-E. Precup, Sz. Kovács, St. Preitl and E. M. Petriu, Eds., Topics in Intelligent Engineering and Informatics, vol. 1 (Springer-Verlag), pp. 19-37, 2012 (link.springer.com, link.springer.com).

Results in 2011:

• 1 paper published in a Thomson Reuters Web of Science (formerly ISI Web of Knowledge) journal with impact factor, impact factor according to 2015 Journal Citation Reports (JCR) released by Thomson Reuters in 2016 = 4.854, relative influence score = 4.119, 1 paper published in conference proceedings indexed in international databases (IEEE Xplore, INSPEC), Best Paper Award at 16^th Online World Conference on Soft Computing in Industrial Applications WSC16 (Loughborough University, UK, 2011) (screenshot of the webpage of WSC11).

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• M.-B. Rădac, R.-E. Precup (corresponding author), E. M. Petriu and St. Preitl, Application of IFT and SPSA to servo system control, IEEE Transactions on Neural Networks, vol. 22, no. 12, part 2, pp. 2363-2375, 2011, impact factor (IF) = 2.952, IF according to 2015 Journal Citation Reports (JCR) released by Thomson Reuters in 2016 = 4.854, relative influence score = 4.119 (IEEE Transactions on Neural Networks and Learning Systems starting with 2012) (ieeexplore.ieee.org, dl.acm.org).
• A.-I. Stînean, St. Preitl, R.-E. Precup, C.-A. Dragoş, M.-B. Rădac and E. M. Petriu, State feedback fuzzy control solution for BLDC drives, Proceedings of 12^th IEEE International Symposium on Computational Intelligence and Informatics CINTI 2011, Budapest, Hungary, pp. 85-90, 2011, indexed in IEEE Xplore, INSPEC (ieeexplore.ieee.org).
• R.-E. Precup, R.-C. David, E. M. Petriu and St. Preitl, Optimal fuzzy controllers tuned by charged system search algorithms (Best Paper Award), 2011 Online Conference on Soft Computing in Industrial Applications WSC 16, 10 pp., 2011.