TY - JOUR AU - Várlaki, Péter AU - Palkovics, László AU - Rövid, András TI - On modeling and identification of empirical partially intelligible white noise processes JF - ASIAN JOURNAL OF CONTROL J2 - ASIAN J CONTROL VL - 23 PY - 2021 IS - 3 SP - 1262 EP - 1279 PG - 18 SN - 1561-8625 DO - 10.1002/asjc.2470 UR - https://m2.mtmt.hu/api/publication/31654577 ID - 31654577 AB - The paper discusses the identification of the empirical, partially intelligible white noise processes generated by deterministic numerical algorithms. The introduced fuzzy-random complementary approach can identify the inner hidden correlational patterns of the empirical white noise process if the process has a real hidden structure of this kind. We have shown how the characteristics of autocorrelated white noise processes change as the order of autocorrelation increases. Based on this approach, the original empirical white noise process transformed by the autocorrelation operator can be considered to be random data series (randomlikeness), and at the same time, it has function-like characteristics (functionlikeness), as well. We approach the analysis of the mentioned complementarity by modeling the autocorrelation functions of the empirical white noise processes using tensor product (TP) model transformation. LA - English DB - MTMT ER - TY - CHAP AU - Bárdos, Ádám AU - Domina, Ádám AU - Tihanyi, Viktor Roland AU - Szalay, Zsolt AU - Palkovics, László ED - IEEE, , TI - Implementation and experimental evaluation of a MIMO drifting controller on a test vehicle T2 - 2020 IEEE Intelligent Vehicles Symposium (IV) PB - Institute of Electrical and Electronics Engineers (IEEE) CY - Piscataway (NJ) SN - 9781728166735 PY - 2020 SP - 1472 EP - 1478 PG - 7 DO - 10.1109/IV47402.2020.9304820 UR - https://m2.mtmt.hu/api/publication/31908664 ID - 31908664 AB - In the future, the presence of highly automated vehicles is expected to become more and more wide spread. In such systems, the whole driving task will be performed by the vehicle autonomously, thus, vehicles must be able to control their motion in various circumstances, even at stability limits. In this paper, the authors consider the control of a steady-state drifting maneuver, which means saturated rear tire forces. In a previous article, a MIMO linear quadratic regulator (LQR) controller was designed, and it showed good performance in simulation environment. The test results of a real vehicle implementation are presented here, which was the logical next step of the work. For the vehicle platform, a series production sports car was chosen. Modifications were made in order to enable by-wire control. After identifying the vehicle model parameters through measurements, the control algorithm was implemented on a rapid prototyping unit. Vehicle states were measured with a high precision dual antenna GNSS module with RTK correction. Additionally, other dynamic parameters from the vehicle CAN bus signals were also used. The main goal was to stabilize different drifting equilibria, which showed satisfying performance of the proposed controller in a real vehicle setup as well. LA - English DB - MTMT ER - TY - JOUR AU - Palkovics, László TI - Kiberbiztonság a járműiparban JF - SCIENTIA ET SECURITAS J2 - SCI SEC VL - 1 PY - 2020 IS - 1 SP - 2 EP - 6 PG - 5 SN - 2732-2688 DO - 10.1556/112.2020.00001 UR - https://m2.mtmt.hu/api/publication/31786758 ID - 31786758 AB - Jelen cikk célja a járműipar egyes területeit érintő kiberbiztonsági kockázatok vizsgálata. Fentiekkel összhangban a cikk első részében a járműipar kiberbiztonsági szempontból releváns területei kerülnek meghatározásra. Ezt követően megtörténik a 2018. évben rögzített járműipari kibertámadások kockázatalapú értékelő elemzése. LA - Hungarian DB - MTMT ER - TY - JOUR AU - Várlaki, Péter AU - Palkovics, László AU - Rövid, András TI - Empirical White Noise Processes and the Subjective Probabilistic Approaches JF - PERIODICA POLYTECHNICA TRANSPORTATION ENGINEERING J2 - PERIOD POLYTECH TRANSP ENG VL - 48 PY - 2020 IS - 1 SP - 19 EP - 30 PG - 12 SN - 0303-7800 DO - 10.3311/PPtr.15165 UR - https://m2.mtmt.hu/api/publication/30875471 ID - 30875471 LA - English DB - MTMT ER - TY - CHAP AU - Bárdos, Ádám AU - Domina, Ádám AU - Szalay, Zsolt AU - Tihanyi, Viktor Roland AU - Palkovics, László ED - Szakál, Anikó TI - MIMO controller design for stabilizing vehicle drifting T2 - IEEE Joint 19th International Symposium on Computational Intelligence and Informatics and 7th IEEE International Conference on Recent Achievements in Mechatronics, Automation, Computer Sciences and Robotics : CINTI-MACRo 2019 PB - IEEE Hungary Section CY - New York, New York SN - 9781728156262 T3 - International Symposium on Computational Intelligence and Informatics, CINTI, ISSN 2380-8586 PY - 2019 SP - 187 EP - 192 PG - 6 DO - 10.1109/CINTI-MACRo49179.2019.9105286 UR - https://m2.mtmt.hu/api/publication/30944259 ID - 30944259 AB - The presence of highly automated vehicles and driver assistance systems is expected to grow in the future. In recent years, these systems offer assistance for the driver but, in the future, the human driver will be increasingly replaced by automated vehicle functions. In order to achieve this, the vehicle must be able to plan and safely follow a trajectory. In this paper, a MIMO linear quadratic regulator was designed for stabilizing the vehicle during steady-state drifting. The research can be utilized in different fields of applications. Namely, the driving capabilities of an automated vehicle must be at least as good as a human driver. Hence, these systems must be able to drive the car at friction limits. Furthermore, a better understanding of the dynamics of drifting and the equilibrium conditions can be used in motorsports. A three-state bicycle model has been implemented, supplemented with two different tire models. A brush tire model was used at front wheels. A combined slip brush tire model was used at rear wheels, considering lateral-longitudinal force coupling. During drift, the rear tires are saturated, the front tires are not. The complete vehicle model containing the tire models described by eight equations, the system of equations has been solved numerically for equilibrium points. The nonlinear vehicle model was Jacobian linearized in a parametric form. Based on the results, a MIMO LQ system was designed. The control inputs include the steering angle at front wheels and longitudinal drive force at rear wheels. Finally, the controller performance was demonstrated using the nonlinear model in MATLAB/Simulink environment. The proposed controller found able to regulate steady-state drifting with predefined sideslip angles and longitudinal velocities. LA - English DB - MTMT ER - TY - JOUR AU - Kőkuti, Zoltán AU - L, Völker-Pop AU - M, Brandstätter AU - Kokavecz, János AU - Ailer, Piroska Gyöngyi AU - Palkovics, László AU - Szabó, Gábor AU - Czirják, Attila TI - Exploring the nonlinear viscoelasticity of a high viscosity silicone oil with LAOS JF - APPLIED RHEOLOGY J2 - APPL RHEOL VL - 26 PY - 2016 IS - 1 PG - 9 SN - 1430-6395 DO - 10.3933/ApplRheol-26-14289 UR - https://m2.mtmt.hu/api/publication/3102442 ID - 3102442 N1 - WoS:hiba:000374917200006 2019-03-12 16:38 DOI azonosító nem egyezik LA - English DB - MTMT ER - TY - GEN AU - Czirják, Attila AU - Z, Kőkuti AU - G, Tóth-Molnár AU - Szabó, Gábor AU - Ailer, Piroska Gyöngyi AU - Palkovics, László TI - Simulation tests of the constitutive equation of a nonlinear viscoelastic fluid PY - 2015 UR - https://m2.mtmt.hu/api/publication/3105046 ID - 3105046 LA - English DB - MTMT ER - TY - JOUR AU - Gáspár, Péter AU - Szabó, Zoltán Béla AU - Palkovics, László AU - Bokor, József TI - Járműdinamikai rendszerek hierarchikus robusztus irányítása JF - JÖVŐ JÁRMŰVE: JÁRMŰIPARI INNOVÁCIÓ J2 - JÖVŐ JÁRMŰVE VL - 5 PY - 2014 IS - 1-2 SP - 65 EP - 68 PG - 4 SN - 1788-2699 UR - https://m2.mtmt.hu/api/publication/2853701 ID - 2853701 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Gáspár, Péter AU - Szabó, Zoltán Béla AU - Palkovics, László AU - Bokor, József TI - Járműdinamikai rendszerek hibatűrő és rekonfiguráló irányításának tervezése JF - JÖVŐ JÁRMŰVE: JÁRMŰIPARI INNOVÁCIÓ J2 - JÖVŐ JÁRMŰVE VL - 5 PY - 2014 IS - 1-2 SP - 61 EP - 64 PG - 4 SN - 1788-2699 UR - https://m2.mtmt.hu/api/publication/2853687 ID - 2853687 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Kőkuti, Zoltán AU - K, van Gruijthuijsen AU - M, Jenei AU - G, Toth-Molnar AU - Czirják, Attila AU - Kokavecz, János AU - Ailer, Piroska Gyöngyi AU - Palkovics, László AU - A C, Volker AU - Szabó, Gábor TI - High-frequency rheology of a high viscosity silicone oil using diffusing wave spectroscopy JF - APPLIED RHEOLOGY J2 - APPL RHEOL VL - 24 PY - 2014 IS - 6 PG - 7 SN - 1430-6395 DO - 10.3933/APPLRHEOL-24-63984 UR - https://m2.mtmt.hu/api/publication/2853407 ID - 2853407 LA - English DB - MTMT ER -