List of publications

Books

  1. R.-E. Precup, R.-C. Roman, E.-L. Hedrea, A.-I. Szedlak-Stinean, and I.-A. Zamfirache, "Classical and Modern Optimization Techniques Applied to Control and Modeling," 1st edition, CRC Press, Boca Raton, FL, USA, Dec. 2025, Taylor & Francis
  2. R.-E. Precup, R.-C. Roman and A. Safaei, "Data-Driven Model-Free Controllers," 1st edition, CRC Press, Boca Raton, FL, USA, Dec. 2021. Taylor & Francis

Book chapters

  1. R.-C. Roman, E.-L. Hedrea, R.-E. Precup, C.-A. Bojan-Dragos, and A.-I. Szedlak-Stinean, "Iterative Feedback Tuning Algorithms for Two Rotor Aerodynamic Systems," Decision Making and Decision Support in the Information Era, 2024, pp. 337-363. Springer
  2. R.-E. Precup, E.-I. Voisan, R.-C. David, E.-L. Hedrea, E. M. Petriu, R.-C. Roman, and A.-I. Szedlak-Stinean, "Nature-Inspired Optimization Algorithms for Path Planning and Fuzzy Tracking Control of Mobile Robots," Applied Optimization and Swarm Intelligence, 2021, pp. 129-148. Springer

Papers in Clarivate Analytics Web of Science Journals

  1. R.-E. Precup, A.-I. Goanta, R.-C. Roman, and E.-L. Hedrea, "Data-driven iterative learning control of anti-windup proportional-integral fuzzy controllers for tower crane systems," Facta Universitatis, Series: Mechanical Engineering, vol. 24, no. 1, pp. 21-36, 2026. https://casopisi.junis.ni.ac.rs
  2. B. Yao, Z. Qi, Z. Liu, M. Zhu, S. Cui, R.-E. Precup, and R.-C. Roman, "Evaluating the Sustainability of Electric Buses During Operation via Field Data," Journal of Intelligent and Connected Vehicles, vol. 8, no. 3, pp. 9210061-1-9210061-17, 2025. https://ieeexplore.ieee.org
  3. R.-E. Precup, R.-C. Roman, and E. M. Petriu, "Active Disturbance Rejection Control and Model-Free Control Tuned via Fictitious Reference Iterative Tuning," Facta Universitatis, Series: Mechanical Engineering, vol. 23, no. 2, pp. 183-196, 2025. https://casopisi.junis.ni.ac.rs
  4. R.-C. Roman, R.-E. Precup, E. M. Petriu, and A.-I. Borlea, "Higher-Order Model-Free Control Tuned by Fictitious Reference Iterative Tuning for 3D Cranes," Romanian Journal of Information Science and Technology, vol. 28, no. 1, 2025. https://www.romjist.ro/contents-97.html
  5. A. Najafi, K. Gao, O. Parishwad, M. Pourakbari-Kasmaei, R.-E. Precup, and R.-C. Roman, "Integrated planning, operation and optimization of coupled transportation and energy systems," Multimodal Transportation, vol. 4, no. 2, 2025. https://www.sciencedirect.com
  6. R.-E. Precup, R.-C. Roman, E.-L. Hedrea, E. M. Petriu, C.-A. Bojan-Dragos, and A.-I. Szedlak-Stinean, "Metaheuristic-Based Tuning of Proportional-Derivative Learning Rules for Proportional-Integral Fuzzy Controllers in Tower Crane System Payload Position Control," Facta Universitatis, Series: Mechanical Engineering, vol. 22, no. 4, pp. 576-582, 2024. https://casopisi.junis.ni.ac.rs
  7. R.-C. Roman, R.-E. Precup, E. M. Petriu, and A.-I. Borlea, "Hybrid Data-Driven Active Disturbance Rejection Sliding Mode Control with Tower Crane Systems Validation," Romanian Journal of Information Science and Technology, vol. 27, no. 1, 2024. https://www.romjist.ro
  8. I. A. Zamfirache, R.-E. Precup, R.-C. Roman, and E. M. Petriu, "Neural Network-based Control Using Actor-Critic Reinforcement Learning and Grey Wolf Optimizer with Experimental Servo System Validation," Expert Systems with Applications, vol. 225, paper 120112, 2023, https://www.sciencedirect.com, (Highly Cited Papers according to Clarivate Analytics Web of Science in January/February 2026),
  9. A.-I. Borlea, R.-E. Precup, and R.-C. Roman, "Discrete-Time Model-Based Sliding Mode Controllers for Tower Crane Systems," Facta Universitatis, Series: Mechanical Engineering, vol. 21, no. 1, pp. 1-20, 2023, http://casopisi.junis.ni.ac.rs,
  10. R.-C. Roman, R.-E. Precup, E. M. Petriu, and M. Muntyan, "Fictitious Reference Iterative Tuning of Discrete-Time Model-Free Control for Tower Crane Systems," Studies in Informatics and Control, vol. 32, no. 1, pp. 5-14, 2023, https://sic.ici.ro,
  11. A.-I. Szedlak-Stinean, R.-E. Precup, E. M. Petriu, R.-C. Roman, E.-L. Hedrea, and C.-A. Bojan-Dragos, "Extended Kalman filter and Takagi-Sugeno fuzzy observer for a strip winding system," Expert Systems with Applications, vol. 208, paper 118215, pp. 1-15, 2022, https://www.sciencedirect.com,
  12. R.-E. Precup, S. Preitl, C.-A. Bojan-Dragos, E.-L. Hedrea, R.-C. Roman and E. M. Petriu, "A Low-Cost Approach to Data-Driven Fuzzy Control of Servo Systems," Facta Universitatis, Series: Mechanical Engineering, vol. 20, no. 1, pp. 021-036, 2022, http://casopisi.junis.ni.ac.rs,
  13. R.-E. Precup, R.-C. Roman, E.-L. Hedrea, C.-A. Bojan-Dragos, M.-M. Damian and M.-L. Nedelcea, "Performance Improvement of Low-Cost Iterative Learning-Based Fuzzy Control Systems for Tower Crane Systems," International Journal of Computers Communications & Control, vol. 17, no. 1, pp. 1-18, 2022, http://univagora.ro ,
  14. I. A. Zamfirache, R.-E. Precup, R.-C. Roman and E. M. Petriu, "Reinforcement Learning-based control using Q-learning and gravitational search algorithm with experimental validation on a nonlinear servo system," Information Sciences, vol. 583, pp. 99-120, 2022, https://www.sciencedirect.com, (Highly Cited Papers according to Clarivate Analytics Web of Science in March/April 2025),
  15. I. A. Zamfirache, R.-E. Precup, R.-C. Roman and E. M. Petriu, "Policy Iteration Reinforcement Learning-based control using a Grey Wolf Optimizer algorithm," Information Sciences, vol. 585, pp. 162-175, 2022, https://www.sciencedirect.com, (Highly Cited Papers according to Clarivate Analytics Web of Science in November/December 2025),
  16. R.-E. Precup, C.-A. Bojan-Dragos, E.-L. Hedrea, R.-C. Roman and E. M. Petriu, "Evolving Fuzzy Models of Shape Memory Alloy Wire Actuators," Romanian Journal of Information Science and Technology, vol. 24, no. 4, pp. 353-365, 2021, https://www.romjist.ro/ ,
  17. R.-E. Precup, R.-C. David, R.-C. Roman, A.-I. Szedlak-Stinean and E. M. Petriu, "Optimal tuning of interval type-2 fuzzy controllers for nonlinear servo systems using Slime Mould Algorithm," International Journal of Systems Science, vol. 54, no. 15, pp. 2941-2956, 2021, https://www.tandfonline.com,
  18. E.-L. Hedrea, R.-E. Precup, R.-C. Roman and E. M. Petriu, "Tensor product‐based model transformation approach to tower crane systems modeling," Asian Journal of Control, vol. 23, no. 3, pp. 1313-1323, 2021, https://onlinelibrary.wiley.com,
  19. R.-E. Precup, R.-C. David, R.-C. Roman, E. M. Petriu and A.-I. Szedlak-Stinean, "Slime Mould Algorithm-Based Tuning of Cost-Effective Fuzzy Controllers for Servo Systems," International Journal of Computational Intelligence Systems, vol. 14, no. 1, pp. 1042-1052, 2021, https://www.atlantis-press.com,
  20. R.-C. Roman, R.-E. Precup and E. M. Petriu, "Hybrid Data-Driven Fuzzy Active Disturbance Rejection Control for Tower Crane Systems," European Journal of Control, vol. 58, pp. 373-387, 2021, https://www.sciencedirect.com, (Highly Cited Papers according to Clarivate Analytics Web of Science in March/April 2021, Highly Cited Papers according to Clarivate Analytics Web of Science in July/August 2021, Highly Cited Papers according to Clarivate Analytics Web of Science in September/October 2021, Highly Cited Papers according to Clarivate Analytics Web of Science in November/December 2021, Highly Cited Papers according to Clarivate Analytics Web of Science in January/February 2022, Hot Papers according to Clarivate Analytics Web of Science in September/October 2021),
  21. R.-E. Precup, R.-C. Roman, E.-L. Hedrea, E. M. Petriu, and C.-A. Bojan-Dragos, "Data-Driven Model-Free Sliding Mode and Fuzzy Control with Experimental Validation," International Journal of Computers Communications & Control, vol. 16, no. 1, pp. 1-18, 2021, http://univagora.ro,
  22. R.-E. Precup, R.-C. Roman, T.-A. Teban, A. Albu, E. M. Petriu and C. Pozna, "Model-Free Control of Finger Dynamics in Prosthetic Hand Myoelectric-Based Control Systems," Studies in Informatics and Control, vol. 29, no. 4, pp. 399-410, 2020, https://sic.ici.ro,
  23. R.-E. Precup, E.-L. Hedrea, R.-C. Roman, E. M. Petriu, A.-I. Szedlak-Stinean and C.-A. Bojan-Dragos, "Experiment-Based Approach to Teach Optimization Techniques," IEEE Transactions on Education, vol. 64, no. 2, pp. 88-94, 2021, https://ieeexplore.ieee.org,
  24. R.-E. Precup, S. Preitl, E. M. Petriu, R.-C. Roman, C.-A. Bojan-Dragos, E.-L. Hedrea and A.-I. Szedlak-Stinean, "A Center Manifold Theory-Based Approach to the Stability Analysis of State Feedback Takagi-Sugeno-Kang Fuzzy Control Systems," Facta Universitatis, Series: Mechanical Engineering, vol. 18, no. 2, pp. 189-204, 2020, http://casopisi.junis.ni.ac.rs,
  25. R.-E. Precup, E.-I. Voisan, E. M. Petriu, M. L. Tomescu, R.-C. David, A.-I. Szedlak-Stinean and R.-C. Roman, "Grey Wolf Optimizer-Based Approaches to Path Planning and Fuzzy Logic-based Tracking Control for Mobile Robots," International Journal of Computers Communications & Control, vol. 15, no. 3, pp. 1-17, 2020, http://www.univagora.ro,
  26. R.-C. Roman, R.-E. Precup, E. M. Petriu and F. Dragan, "Combination of Data-Driven Active Disturbance Rejection and Takagi-Sugeno Fuzzy Control with Experimental Validation on Tower Crane Systems," Energies, vol. 12, no. 8, pp. 1-19, 2019, https://www.mdpi.com,
  27. M.-B. Radac, R.-E. Precup and R.-C. Roman, "Data-driven model reference control of MIMO vertical tank systems with model-free VRFT and Q-learning," ISA Transactions, vol. 73, pp. 227-238, 2018, https://www.sciencedirect.com,
  28. R.-C. Roman, M.-B. Radac, R.-E. Precup and E. M. Petriu, "Virtual reference feedback tuning of model-free control algorithms for servo systems," Machines, vol. 5, no. 4, pp. 1-15, 2017, https://www.mdpi.com,
  29. M.-B. Radac, R.-E. Precup and R.-C. Roman, "Model-Free control performance improvement using virtual reference feedback tuning and reinforcement Q-learning," International Journal of Systems Science, vol. 48, no. 5, pp. 1071-1083, 2017, https://www.tandfonline.com,
  30. R.-E. Precup, M.-B. Radac and R.-C. Roman, "Model-free sliding mode control of nonlinear systems: Algorithms and experiments," Information Sciences, vol. 381, pp. 176-192, 2017, https://www.sciencedirect.com, (Highly Cited Papers according to Clarivate Analytics Web of Science),
  31. R.-E. Precup, S. Preitl, C.-A. Bojan-Dragos, M.-B. Radac, A.-I. Szedlak-Stinean, E.-L. Hedrea and R.-C. Roman, "Automotive applications of evolving Takagi-Sugeno-Kang fuzzy models," Facta Universitatis, Series: Mechanical Engineering, vol. 15, no. 2, pp. 231-244, 2017, http://casopisi.junis.ni.ac.rs,
  32. R.-C. Roman, M.-B. Radac and R.-E. Precup, "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, https://digital-library.theiet.org,
  33. R.-C. Roman, M.-B. Radac, 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, http://uni-obuda.hu,

Journal Papers

  1. R.-E. Precup, S. Preitl, E. M. Petriu, C.-A. Bojan-Dragos, A.-I. Szedlak-Stinean, R.-C. Roman and E.-L. Hedrea, "Model-Based Fuzzy Control Results for Networked Control Systems," Reports in Mechanical Engineering, vol. 1, no. 1, pp. 10-25, 2020, https://www.frontpres.rabek.org,

Published Contributions in Refereed Academic Conferences

  1. R.-C. Roman, R.-E. Precup, and K. Stebel, "Active Disturbance Rejection Control – Sliding Mode Control and Model-Free Control – Sliding Mode Control for Servo Systems," 22nd Polish Control Conference (PCC), Poznań, Poland, pp. 235-246, 2026, https://link.springer.com,
  2. K. Stebel, R.-C. Roman, R.-E. Precup, S. Brzeziński, and P. Nowak, "Active Disturbance Rejection Control for a Class of Linear Systems with Differential Inputs," 22nd Polish Control Conference (PCC), Poznań, Poland, pp. 247-258, 2026, https://link.springer.com,
  3. R.-E. Precup, R.-C. Diaconu, R.-C. Roman, and E.-L. Hedrea, "Direct Iterative Feedback Tuning of Anti-Windup Fuzzy Control of Small Rescue Mobile Robot," 2026 18th International Conference on Electronics, Computers and Artificial Intelligence (ECAI), Bucharest, Romania, pp. 1-6, 2026, https://ieeexplore.ieee.org,
  4. R.-E. Precup, C.-L. Nitulescu, R.-C. Roman, and E.-L. Hedrea, "Iterative Feedback Tuning of Anti-Windup PI Fuzzy Control of Small Autonomous Electric Car," 2026 18th International Conference on Electronics, Computers and Artificial Intelligence (ECAI), Bucharest, Romania, pp. 1-6, 2026, https://ieeexplore.ieee.org,
  5. R.-C. Roman, R.-E. Precup, E. M. Petriu, and A.-M. Chiru, "Fictitious Reference Iterative Tuning of Active Disturbance Rejection Control Combined with Fuzzy Logic for Crane Systems," 2025 29th International Conference on System Theory, Control and Computing (ICSTCC), Cluj-Napoca, Romania, pp. 427-433, 2025, https://ieeexplore.ieee.org,
  6. F. Butaru, S. Musuroi, M. Svoboda, R.-C. Roman, C. Sorandaru, and A. D. Martin, "Analytic Review of V/f Strategy-Based Control Methods for PMSM and Their Applications," 2025 23rd International Symposium on Power Electronics (Ee), Novi Sad, Serbia, pp. 1-6, 2025, https://ieeexplore.ieee.org,
  7. R.-E. Precup, R.-C. Roman, E.-L. Hedrea, and M.-L. Nedelcea, "Direct Iterative Feedback Tuning of Anti-Windup Fuzzy Controllers for Payload Position Control of Tower Crane Systems," 7th IFAC Conference on Intelligent Control and Automation Sciences ICONS 2025, Padova, Italy, pp. 317-322, 2025, https://www.sciencedirect.com,
  8. R.-C. Roman, R.-E. Precup, E.-L. Hedrea, and E. M. Petriu, "Model-Free Adaptive Control for Three-Dimensional Crane Systems," 2nd IFAC Workshop on Control of Complex Systems COSY 2025, vol. 59, no. 11, Gif-sur-Yvette, France, pp. 150-155, 2025, https://www.sciencedirect.com,
  9. R.-C. Roman, R.-E. Precup, K. Stebel, and R. Madonski, "Active disturbance rejection control tuned by fictitious reference iterative tuning for tower crane systems," 2025 European Control Conference (ECC), Thessaloniki, Greece, pp. 1735-1742, 2025, https://ieeexplore.ieee.org,
  10. R.-E. Precup, C. Pozna, R.-C. Roman, and M.-M. Damian, "Iterative Feedback Tuning of Anti-Windup PI Fuzzy Control of Tower Crane System Payload Position," 2025 IEEE International Conference on Fuzzy Systems (FUZZ-IEEE), Reims, France, pp. 1-8, 2025, https://ieeexplore.ieee.org,
  11. D.-O., Negirla, R.-E. Precup, R.-C. Roman, and P.-O. Negirla, "Thermal Image Calibration Method for Temperature Measurement Using Sensor Fusion," 2025 IEEE 19th International Symposium on Applied Computational Intelligence and Informatics (SACI), Timisoara, Romania, pp. 000131-000138, 2025, https://ieeexplore.ieee.org,
  12. R.-C. Roman, R.-E. Precup, and E. M. Petriu, "Active Disturbance Rejection Control for 3D Crane Systems," Procedia Computer Science, vol. 242, Bucharest, Romania, pp. 976-983, 2024, https://www.sciencedirect.com,
  13. E.-L. Hedrea, R.-E. Precup, R.-C. Roman, and I.-C. Hedrea, "Tensor Product-based and State Feedback Control Solutions for Cart Position Control of Pendulum-Cart Systems," 2023 27th International Conference on System Theory, Control and Computing (ICSTCC), Timisoara, Romania, pp. 12-17, 2023, https://ieeexplore.ieee.org,
  14. A.-I. Borlea, R.-E. Precup, and R.-C. Roman, "Two Discrete-Time Data-Driven Sliding Mode Controllers for Tower Crane Systems," 2023 27th International Conference on System Theory, Control and Computing (ICSTCC), Timisoara, Romania, pp. 239-244, 2023, https://ieeexplore.ieee.org,
  15. A.-I. Szedlak-Stinean, R.-E. Precup, R.-C. Roman, E. M. Petriu, and E.-L. Hedrea, "SMA-Based Tuning of PI Controller Using Takagi-Sugeno Fuzzy Observers for an Electromechanical System with Variable Parameters," 2023 9th International Conference on Control, Decision and Information Technologies (CoDIT), Rome, Italy, pp. 1761-1768, 2023, https://ieeexplore.ieee.org,
  16. R.-C. Roman, R.-E. Precup, and E.-L. Hedrea, "Intelligent Proportional Controller Tuned by Virtual Reference Feedback Tuning and Fictitious Reference Iterative Tuning," Procedia Computer Science, vol. 221, Oxford, England, UK, pp. 86-93, 2023, https://www.sciencedirect.com,
  17. R.-C. Roman, R.-E. Precup, E. M. Petriu, M. Muntyan, and E.-L. Hedrea, "Fictitious Reference Iterative Tuning of Intelligent Proportional-Integral Controllers for Tower Crane Systems," 2023 31st Mediterranean Conference on Control and Automation (MED), Limassol, Cyprus, pp. 740-746, 2023, https://ieeexplore.ieee.org,
  18. A.-I. Szedlak-Stinean, R.-E. Precup, R.-C. Roman, and E. M. Petriu, "Discrete-time Observers for a Mechatronics System with PID Controllers Tuned Using SMA," 2023 IEEE 32nd International Symposium on Industrial Electronics (ISIE), Helsinki, Finland, pp. 1-8, 2023, https://ieeexplore.ieee.org,
  19. C.-A. Bojan-Dragos, R.-E. Precup, R.-C. Roman, E. M. Petriu, and M. Muntyan, "PI and Super Twisting Sliding Mode with Smith Predictor Control Structures for SMA Actuators," 2023 IEEE 32nd International Symposium on Industrial Electronics (ISIE), Helsinki, Finland, pp. 1-7, 2023, https://ieeexplore.ieee.org,
  20. C.-A. Bojan-Dragos, R.-E. Precup, A.-I. Szedlak-Stinean, R.-C. Roman, E.-L. Hedrea, and E. M. Petriu, "Sliding Mode and Super-Twisting Sliding Mode Control Structures for SMA Actuators," 2023 European Control Conference (ECC), Bucharest, Romania, pp. 1-6, 2023, https://ieeexplore.ieee.org,
  21. R.-E. Precup, R.-C. Roman, E.-L. Hedrea, E. M. Petriu, C.-A. Bojan-Dragos, and A.-I. Szedlak-Stinean, "Slime Mold Algorithm-Based Performance Improvement of PD-Type Indirect Iterative Learning Fuzzy Control of Tower Crane Systems," 2023 57th Annual Conference on Information Sciences and Systems (CISS), Baltimore, MD, USA, pp. 1-6, 2023, https://ieeexplore.ieee.org,
  22. A.-I. Szedlak-Stinean, R.-E. Precup, R.-C. Roman, E. M. Petriu, C.-A. Bojan-Dragos, and E.-L. Hedrea, "Discrete-time Linear and Nonlinear Observers for an Electromechanical Plant with State Feedback Control," 2022 IEEE Symposium Series on Computational Intelligence (SSCI), Singapore, Singapore, pp. 700-707, 2022, https://ieeexplore.ieee.org,
  23. C.-B. Gale-Cazan, C.-A. Bojan-Dragos, R.-E. Precup, R.-C. Roman, E. M. Petriu, and A.-I. Szedlak Stinean, "GWO-based Modeling of an Unstable Transport System," Procedia Computer Science, vol. 214, Beijing, China, pp. 195-202, 2022, https://www.sciencedirect.com,
  24. R.-C. Roman, R.-E. Precup, S. Preitl, A.-I. Szedlak Stinean, C.-A. Bojan-Dragos, E.-L. Hedrea, and E. M. Petriu, "PI Controller Tuning via Data-Driven Algorithms for Shape Memory Alloy Systems," 1st IFAC Workshop on Control of Complex Systems, COSY 2022, vol. 55, no. 40, Bologna, Italy, pp. 181-186, 2022, https://www.sciencedirect.com,
  25. E.-L. Hedrea, R.-E. Precup, R.-C. Roman, C.-A. Bojan-Dragos, A.-I. Szedlak Stinean, and C. Hedrea, "Tensor Product-based and State Feedback Structures for Level Control of Vertical Three Tank Systems," 2022 26th International Conference on System Theory, Control and Computing (ICSTCC), Sinaia, Romania, pp. 195-200, 2022, https://ieeexplore.ieee.org,
  26. R.-E. Precup, E.-L. Hedrea, R.-C. Roman, E. M. Petriu, C.-A. Bojan-Dragos, A.-I. Szedlak Stinean, and C. Hedrea, "Evolving Fuzzy and Tensor Product-based Models for Tower Crane Systems," 48th Annual Conference of the Industrial Electronics Society, Brussels, Belgium, pp. 1-6, 2022, https://ieeexplore.ieee.org,
  27. R.-C. Roman, R.-E. Precup, S. Preitl, C.-A. Bojan-Dragos, A.-I. Szedlak Stinean, and E.-L. Hedrea, "Data-Driven Control Algorithms for Shape Memory Alloys," 6th IEEE Conference on Control Technology and Applications, Trieste, Italy, pp. 1-7, 2022, https://ieeexplore.ieee.org/,
  28. R.-E. Precup, E.-L. Hedrea, R.-C. Roman, E. M. Petriu, C.-A. Bojan-Dragos, A.-I. Szedlak Stinean, and F.-A. Paulescu, "AVOA-Based Tuning of Low-Cost Fuzzy Controllers for Tower Crane Systems," 2022 IEEE International Conference on Fuzzy Systems (FUZZ-IEEE), Padova, Italy, pp. 1-6, 2022, https://ieeexplore.ieee.org,
  29. R.-E. Precup, E.-L. Hedrea, R.-C. Roman, E. M. Petriu, C.-A. Bojan-Dragos, and A.-I. Szedlak Stinean, "GWO-Based Performance Improvement of PD-Type Iterative Learning Fuzzy Control of Tower Crane Systems," 2022 IEEE International Symposium on Industrial Electronics, Anchorage, AK, USA, pp. 1-6, 2022, https://ieeexplore.ieee.org,
  30. A.-I. Szedlak-Stinean, R.-E. Precup, and R.-C. Roman, "Linear and nonlinear observers developed for direct current electric drive systems," 2022 9th International Conference on Computers Communications and Control, Baile Felix, Romania, pp. 107-119, 2022, https://link.springer.com,
  31. C.-A. Bojan-Dragos, R.-E. Precup, E. M. Petriu, R.-C. Roman, E.-L. Hedrea, and A.-I. Szedlak Stinean, "GWO-Based Optimal Tuning of Controllers for Shape Memory Alloy Wire Actuators," 6th IFAC Conference on Intelligent Control and Automation Sciences, Cluj-Napoca, Romania, pp. 39-44, 2022, https://www.sciencedirect.com,
  32. R.-C. Roman, R.-E. Precup, E.-L. Hedrea, S. Preitl, I. A. Zamfirache, C.-A. Bojan-Dragos, and E. M. Petriu, "Iterative Feedback Tuning Algorithm for Tower Crane Systems," Procedia Computer Science, vol. 199, Chengdu, China, pp. 157-165, 2022, https://www.sciencedirect.com,
  33. E.-L. Hedrea, R.-E. Precup, R.-C. Roman, E. M. Petriu, C.-A. Bojan-Dragos, and C. Hedrea, "Tensor Product-Based Model Transformation Technique Applied to Servo Systems Modeling," 2021 IEEE 30th International Symposium on Industrial Electronics (ISIE), Kyoto, Japan, pp. 1-6, 2021, https://ieeexplore.ieee.org,
  34. C.-A. Bojan-Dragos, R.-E. Precup, S. Preitl, R.-C. Roman, E.-L. Hedrea, and A.-I. Szedlak-Stinean, "GWO-Based Optimal Tuning of Type-1 and Type-2 Fuzzy Controllers for Electromagnetic Actuated Clutch Systems," IFAC-PapersOnLine, Valenciennes, France, vol. 54, no. 4, pp. 189-194, 2021, https://www.sciencedirect.com,
  35. R.-C. Roman, R.-E. Precup, E. M. Petriu, C.-A. Bojan-Dragos, V.-B. Vanya, and M.-D. Rarinca, "Second Order Active Disturbance Rejection Control – Virtual Reference Feedback Tuning for Twin Rotor Aerodynamic Systems," 2020 IEEE International Conference on Systems, Man, and Cybernetics (SMC 2020), Toronto, Canada, pp. 1-6, 2020, https://ieeexplore.ieee.org,
  36. R.-C. Roman, R.-E. Precup, E. M. Petriu, R.-C. David, E.-L. Hedrea, and A.-I. Szedlak-Stinean, "First-Order Active Disturbance Rejection-Virtual Reference Feedback Tuning Control of Tower Crane Systems," 24th International Conference on System Theory, Control and Computing (ICSTCC 2020), Sinaia, Romania, pp. 1-6, 2020, https://ieeexplore.ieee.org,
  37. R.-C. David, R.-E. Precup, S. Preitl, A.-I. Szedlak-Stinean, E. M. Petriu, and R.-C. Roman, "Fuzzy Control Systems with Reduced Parametric Sensitivity Design Based on Hybrid Grey Wolf Optimizer–Particle Swarm Optimization," 24th International Conference on System Theory, Control and Computing (ICSTCC 2020), Sinaia, Romania, pp. 1-6, 2020, https://ieeexplore.ieee.org,
  38. R.-C. David, R.-E. Precup, S. Preitl, A.-I. Szedlak-Stinean, R.-C. Roman, and E. M. Petriu, "Design of Low-Cost Fuzzy Controllers with Reduced Parametric Sensitivity Based on Whale Optimization Algorithm," 2020 IEEE International Conference on Fuzzy Systems (FUZZ-IEEE), Glasgow, Scotland, UK, pp. 1-6, 2020, https://ieeexplore.ieee.org,
  39. R.-C. David, R.-E. Precup, S. Preitl, E. M. Petriu, A.-I. Szedlak-Stinean, and R.-C. Roman, "Whale Optimization Algorithm-Based Tuning of Low-Cost Fuzzy Controllers with Reduced Parametric Sensitivity," 2020 28th Mediterranean Conference on Control and Automation, Saint-Raphaël, France, pp. 440-445, 2020, https://ieeexplore.ieee.org,
  40. I. Panfilii, R.-E. Precup, R.-C. Roman, and E. M. Petriu, "Wilt Dataset-based Comparative Analysis of Three Neural Networks," 12th International Conference on Electronics, Computers and Artificial Intelligence, Bucharest, Romania, pp. 1-6, 2020, https://ieeexplore.ieee.org,
  41. D. Komor, R.-C. Roman, R.-E. Precup, R.-C. David, and I. Panfilii, "Models of Two-Wheeled Mobile Robots with Experimental Validation," 2020 IEEE 14th International Symposium on Applied Computational Intelligence and Informatics, Timisoara, Romania, pp. 000211-000216, 2020, https://ieeexplore.ieee.org,
  42. R.-C. Roman, R.-E. Precup, C.-A. Bojan-Dragos, and A.-I. Szedlak-Stinean, "Combined Model-Free Adaptive Control with Fuzzy Component by Virtual Reference Feedback Tuning for Tower Crane Systems," Procedia Computer Science, vol. 162, Granada, Spain, pp. 267-274, 2019, https://www.sciencedirect.com,
  43. R.-C. Roman, R.-E. Precup, E. M. Petriu, E.-L. Hedrea, C.-A. Bojan-Dragos, and M.-B. Radac, "Model-Free Adaptive Control With Fuzzy Component for Tower Crane Systems," in Proc. 2019 IEEE International Conference on Systems, Man and Cybernetics (SMC), Bari, Italy, pp. 1384-1389, 2019, https://ieeexplore.ieee.org,
  44. E.-L. Hedrea, R.-E. Precup, C.-A. Bojan-Dragos, E. M. Petriu, and R.-C. Roman, "Tensor Product–Based Model Transformation and Sliding Mode Control of Electromagnetic Actuated Clutch System," in Proc. 2019 IEEE International Conference on Systems, Man and Cybernetics (SMC), Bari, Italy, pp. 1402-1407, 2019, https://ieeexplore.ieee.org,
  45. C.-A. Bojan-Dragos, E.-L. Hedrea, R.-E. Precup, A.-I. Szedlak-Stinean, and R.-C. Roman, "MIMO Fuzzy Control Solutions for the Level Control of Vertical Two Tank Systems," in Proc. 16th International Conference on Informatics in Control, Automation and Robotics, Prague, Czech Republic, vol. 1, pp. 810-817, 2019, https://www.semanticscholar.org,
  46. R.-C. Roman, R.-E. Precup, and R.-C. David, "Second order intelligent proportional-integral fuzzy control of twin rotor aerodynamic systems," in Proc. Procedia Computer Science, vol. 139, Omaha, Nebraska, USA, pp. 372-380, 2018, https://www.sciencedirect.com,
  47. E.-L. Hedrea, R.-E. Precup, C.-A. Bojan-Dragos, R.-C. Roman, O. Tanasoiu, and M. Marinescu, "Cascade Control Solutions for Maglev Systems," in Proc. 22nd International Conference on System Theory, Control and Computing, Sinaia, Romania, pp. 20-26, 2018, https://ieeexplore.ieee.org,
  48. R.-C. Roman, M.-B. Radac, C. Tureac, and R.-E. Precup, "Data-Driven Active Disturbance Rejection Control of Pendulum Cart Systems*," in Proc. 2nd IEEE Conference on Control Technology and Applications, Copenhagen, Denmark, pp. 933-938, 2018, https://ieeexplore.ieee.org,
  49. C. Bumb, M.-B. Radac, R.-E. Precup, and R.-C. Roman, "Data-driven nonlinear VRFT for dead-zone compensation in servo systems control," in Proc. 2017 21st International Conference on System Theory, Control and Computing, Sinaia, Romania, pp. 821-826, 2017, https://ieeexplore.ieee.org,
  50. R.-C. Roman, R.-E. Precup, M.-B. Radac, and E. M. Petriu, "Takagi-Sugeno fuzzy controller structures for twin rotor aerodynamic systems," in Proc. 2017 IEEE International Conference on Fuzzy Systems, Naples, Italy, pp. 1-6, 2017, https://ieeexplore.ieee.org,
  51. R.-C. Roman, R.-E. Precup, and M.-B. Radac, "Model-free fuzzy control of twin rotor aerodynamic systems," in Proc. 25th Mediterranean Control Conference on Control and Automation, Valletta, Malta, pp. 559-564, 2017, https://ieeexplore.ieee.org,
  52. M.-B. Radac, R.-E. Precup, and R.-C. Roman, "Multi input-multi output tank system data-driven model reference control," in Proc. 13th IEEE International Conference on Control & Automation, Ohrid, Macedonia, pp. 1078-1083, 2017, https://ieeexplore.ieee.org,
  53. M.-B. Radac, R.-E. Precup, and R.-C. Roman, "Anti-lock braking systems data-driven control using Q-learning," in Proc. 26th IEEE International Symposium on Industrial Electronics, Edinburgh, Scotland, United Kingdom, pp. 418-423, 2017, https://ieeexplore.ieee.org,
  54. E.-L. Hedrea, C.-A. Bojan-Dragos, R.-E. Precup, R.-C. Roman, E. M. Petriu, and C. Hedrea, "Tensor product-based model transformation for position control of magnetic levitation systems," in Proc. 26th IEEE International Symposium on Industrial Electronics, Edinburgh, Scotland, United Kingdom, pp. 1141-1146, 2017, https://ieeexplore.ieee.org,
  55. R.-E. Precup, S. Preitl, C.-A. Bojan-Dragos, M.-B. Radac, A.-I. Szedlak-Stinean, E.-L. Hedrea, and R.-C. Roman, "Evolving Takagi-Sugeno fuzzy modeling applications of incremental online identification algorithms," in Proc. XIII International SAUM Conference on Systems, Automatic Control and Measurements, Nis, Serbia, pp. 1-8, 2016, https://scholar.google.com,
  56. R.-C. Roman, M.-B. Radac, and R.-E. Precup, "Mixed MFC-VRFT approach for a multivariable aerodynamic system position control," in Proc. 2016 IEEE International Conference on Systems, Man, and Cybernetics, Budapest, Hungary, pp. 2615-2620, 2016, https://ieeexplore.ieee.org,
  57. R.-E. Precup, M.-B. Radac, E. M. Petriu, R.-C. Roman, T.-A. Teban, and A.-I. Szedlak-Stinean, "Evolving fuzzy models for the position control of twin rotor aerodynamic systems," in Proc. 2016 IEEE 14th International Conference on Industrial Informatics, Poitiers, France, pp. 237-242, 2016, https://ieeexplore.ieee.org,
  58. M.-B. Radac, 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," in Proc. 2016 24th Mediterranean Conference on Control and Automation (MED), Athens, Greece, pp. 1126-1132, 2016, https://ieeexplore.ieee.org,
  59. R.-C. Roman, M.-B. Radac, R.-E. Precup, and E. M. Petriu, "Virtual reference feedback tuning of MIMO data-driven model-free adaptive control algorithms," in Proc. 7th Advanced Doctoral Conference on Computing, Electrical and Industrial Systems, Caparica (Lisbon), Portugal, pp. 253-260, 2016, https://link.springer.com,
  60. R.-C. Roman, M.-B. Radac, R.-E. Precup, and A.-I. Szedlak, "Two data-driven control algorithms for a MIMO aerodynamic system with experimental validation," in Proc. 2015 19th International Conference on System Theory, Control and Computing, Cheile Gradistei, Romania, pp. 736-741, 2015, https://ieeexplore.ieee.org,
  61. R.-C. Roman, M.-B. Radac, R.-E. Precup, and E. M. Petriu, "Data-driven optimal model-free control of twin rotor aerodynamic systems," in Proc. 2015 IEEE International Conference on Industrial Technology, Seville, Spain, pp. 161-166, 2015, https://ieeexplore.ieee.org,
  62. M.-B. Radac, R.-C. Roman, R.-E. Precup, and E. M. Petriu, "Data-driven model-free control of twin rotor aerodynamic systems: algorithms and experiments," in Proc. 2014 IEEE International Symposium on Intelligent Control, Antibes, France, pp. 1889-1894, 2014, https://ieeexplore.ieee.org,
  63. R.-C. Roman, M.-B. Radac, and R.-E. Precup, "Data-driven model-free adaptive control of twin rotor aerodynamic systems," in Proc. IEEE 9th International Symposium on Applied Computational Intelligence and Informatics, Timisoara, Romania, pp. 25-30, 2014, https://ieeexplore.ieee.org,
  64. M.-B. Radac, R.-C. Roman, R.-E. Precup, E. M. Petriu, C.-A. Dragos, and S. Preitl, "Data-based tuning of linear controllers for MIMO twin rotor systems," in Proc. 2013 IEEE EUROCON, Zagreb, Croatia, pp. 1915-1920, 2013, https://ieeexplore.ieee.org,

Conference Papers

  1. R.-E. Precup, S. Preitl, C.-A. Bojan-Dragos, M.-B. Radac, A.-I. Szedlak-Stinean, E.-L. Hedrea, and R.-C. Roman, "Technical and Non-Technical Applications of Evolving Takagi-Sugeno-Kang Fuzzy Models," in Proc. of 4th International Conference on Electrical, Electronics and Computing Engineering IcETRAN 2017, Kladovo, Serbia, pp. 1-8, 2017, https://etran.rs,

Certificates

  1. 2023: A certificate that register to the Romanian Office of Copyright (Oficiul Român pentru Drepturile de Autor, ORDA) the work "Study of design and industrial implementation of a hybrid model-free fuzzy controller", no. RGII/INT/1838/02.05.2023 - RGII/IES/1838/08.05.2023, (The Certificate),
  2. 2023: A certificate that register to the Romanian Office of Copyright (Oficiul Român pentru Drepturile de Autor, ORDA) the work "Study of design and industrial implementation of a hybrid model-free adaptive fuzzy controller", no. RGII/INT/2607/23.06.2023 - RGII/IES/2607/20.07.2023 (The Certificate),
  3. 2023: A certificate that register to the Romanian Office of Copyright (Oficiul Român pentru Drepturile de Autor, ORDA) the work "Study of design and industrial implementation of a fuzzy controller with proportional-derivative indirect iterative learning", no. RGII/INT/3514/29.08.2023 - RGII/IES/3514/28.09.2023 (The Certificate),