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Computation of nonlinear eigenvalues based on the Ore determinant : preliminary resultsHalás, Miroslav; Kaldmäe, Arvo; Kotta, Ülle; Slacka, JurajProceedings of the Estonian Academy of Sciences2024 / p. 366 - 378 https://doi.org/10.3176/proc.2024.4.06 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

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Design of multirate nonlinear discrete control systemsAstrov, IgorBEC'96 : the 5th Biennial Baltic Electronics Conference, October 7-11, 1996, Tallinn, Estonia : proceedings1996 / p. 355-358

Discrete approximation of nonlinear controlLepp, RihoSelected papers of the Symposium on Operations Research (SOR96) , Braunschweig1997 / p. 468-473

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Extended observer forms for submersive discrete-time systemsSimha, Ashutosh; Kaparin, Vadim; Mullari, Tanel; Kotta, ÜlleIEEE Transactions on Automatic Control2023 / p. 2684 - 2688 https://doi.org/10.1109/TAC.2023.3336253 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

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Further results on identifiability of discrete-time nonlinear systemsNõmm, Sven; Moog, ClaudeAutomatica2016 / p. 69-74 : ill https://doi.org/10.1016/j.automatica.2016.01.054 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

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Input–output linearization of discrete-time systems by dynamic output feedbackKaldmäe, Arvo; Kotta, ÜlleEuropean journal of control2014 / p. 73-78 https://doi.org/10.1016/j.ejcon.2013.12.004 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Integrability for nonlinear time-delay systemsKaldmäe, Arvo; Califano, Claudia; Moog, ClaudeIEEE transactions on automatic control2016 / p. 1912-1917 https://doi.org/10.1109/TAC.2015.2482003 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Juhtimissüsteemide juhitavus ja tagasiside. Tagasiside. Mittelineaarsus.LamedusKotta, ÜlleKeeruka maailma võlu2015 / lk. 77-80 : ill https://www.ester.ee/record=b4488344*est

Kaoseraamat : [õpik]Lepik, Ülo; Engelbrecht, Jüri1999 https://www.ester.ee/record=b1268229*est

Kuidas segaduses korda luuaVõhandu, LeoKindlus ja kindlusetus muutuvas maailmas : interdistsiplinaarne teoreetiline konverents : 27.-28. märtsil 2002 Tallinnas2002 / lk. 58-65 https://artiklid.elnet.ee/record=b2112656*est

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Measurement feedback disturbance decoupling in discrete-event systemsKaldmäe, Arvo; Kotta, Ülle; Shumsky, Alexey; Zhirabok, AlexeyInternational journal of robust and nonlinear control2015 / p. 3330-3348 http://dx.doi.org/10.1002/rnc.3265

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Minimal realizations of nonlinear systemsKotta, Ülle; Moog, Claude; Tõnso, MarisAutomatica2018 / p. 207-212 https://doi.org/10.1016/j.automatica.2018.05.007 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Minimal realizations of nonlinear time-delay systemsKaldmäe, Arvo; Zbigniew, Bartosiewicz; Kotta, Ülle; Wyrwas, MalgorzataIEEE transactions on automatic control2023 / p. 6766 - 6772 https://doi.org/10.1109/TAC.2023.3240124 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

The minimal time-varying realization of a nonlinear time-invariant system?Kotta, Ülle; Moog, Claude H.; Tõnso, Maris9th IFAC Symposium on Nonlinear Control Systems 2013 : Toulouse, France, 4 - 6 September 20132013 / p. 518 - 523 https://doi.org/10.3182/20130904-3-FR-2041.00080 Conference Proceedings at Scopus Article at Scopus

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On accessibility conditions for state space nonlinear control systems on homogeneous time scalesBartosiewicz, Zbigniew; Kotta, Ülle; Mullari, Tanel; Tõnso, Maris; Wyrwas, MałgorzataSystems & control letters2016 / p. 8-13 https://doi.org/10.1016/j.sysconle.2016.09.018 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

On flatness of discrete-time nonlinear systemsKaldmäe, Arvo; Kotta, Ülle9th IFAC Symposium on Nonlinear Control Systems 2013 : Toulouse, France, 4 - 6 September 20132013 / p. 588 - 593 https://doi.org/10.3182/20130904-3-FR-2041.00017 Conference Proceedings at Scopus Article at Scopus

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On integrability of observable space for discrete-time polynomial control systemsKawano, Yu; Kotta, ÜlleIEEE transactions on automatic control2015 / p. 1987-1991 http://dx.doi.org/10.1109/TAC.2014.2365685

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On submersivity assumption for nonlinear control systems on homogeneous time scalesKotta, Ülle; Rehák, Branislav; Wyrwas, MałgorzataProceedings of the Estonian Academy of Sciences2011 / 1, 25-37

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On the long-time behavior of soliton ensemblesSalupere, Andrus; Engelbrecht, Jüri; Peterson, PearuAbstract book : Second IMACS Conference on Nonlinear Evolution Equations and Wave Phenomena : Computation and Theory : April 9-12, 2001, Athens, USA2001 / ? p https://www.sciencedirect.com/science/article/abs/pii/S0378475402001787

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On-line identification and adaptive control of nonlinear systems using neural networksVassiljeva, Kristina; Rüstern, EnnuBEC 2004 : proceedings of the 9th Biennial Baltic Electronics Conference : October 3-6, 2004, Tallinn, Estonia2004 / p. 149-152 : ill

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Polynomial methods for nonlinear control systems = Polünoommeetodid mittelineaarsetes juhtimissüsteemidesBelikov, Juri2012 http://www.ester.ee/record=b2854462*est

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Predictive smart thermostat controller for heating, ventilation, and air-conditioning systemsSoudari, Mallikarjun; Kaparin, Vadim; Srinivasan, Seshadhri; Seshadhri, Subathra; Kotta, ÜlleProceedings of the Estonian Academy of Sciences2018 / p. 291-299 : ill http://www.kirj.ee/public/proceedings_pdf/2018/issue_3/proc-2018-3-291-299.pdf https://doi.org/10.3176/proc.2018.3.11 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Realizability of bilinear input-output differential equations in the classigal [i.e. classical] state-space formKotta, Ülle; Mullari, Tanel; Kotta, Palle; Zinober, Alan5th Junior European Meeting on Control & Information Technology : September 20-22, 2006, Tallinn, Estonia : book of abstracts2006 / p. 18

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Realization of nonlinear MIMO system on homogeneous time scalesBelikov, Juri; Kotta, Ülle; Tõnso, MarisEuropean journal of control2015 / p. 48-54 https://doi.org/10.1016/j.ejcon.2015.01.006 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Realization of time-delay systemsKaldmäe, Arvo; Kotta, ÜlleAutomatica2018 / p. 317-320 https://doi.org/10.1016/j.automatica.2018.01.001 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Realizations in feedforward forms of nonlinear input-output equations with time-delaysKaldmäe, Arvo; Kawano, Yu; Kotta, ÜlleInternational journal of robust and nonlinear control2020 / p. 7560-7573 https://doi.org/10.1002/rnc.5194 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Recognition of the surgeon's motions during endoscopic operation by statistics based algorithm and neural networks based ANARX modelsNõmm, Sven; Petlenkov, Eduard; Vain, Jüri; Belikov, Juri; Miyawaki, Fujio; Yoshimitsu, KitaroProceedings of the 17th World Congress The International Federation of Automatic Control : Seoul, Korea, July 6-11, 20082008 / p. 14773-14778 https://www.sciencedirect.com/science/article/pii/S1474667016413662

Reducibility condition for nonlinear discrete-time systems : behavioral approachBartosiewicz, Zbigniew; Kotta, Ülle; Pawłuszewicz, Ewa; Tõnso, Maris; Wyrwas, MałgorzataControl and Cybernetics2013 / p. 329-346 https://citeseerx.ist.psu.edu/document?repid=rep1&type=pdf&doi=d858f3fd9c2acd98e41f35a0bed4c0cb9efab59c Journal metrics at Scopus Article at Scopus

Region of admissible values for discrete-time nonlinear control system linearized by output feedbackBelikov, Juri; Petlenkov, EduardProceedings of the 18th IFAC World Congress : Milano, Italy, August 28 - September 2, 20112011 / p. 209-214 https://www.sciencedirect.com/science/article/pii/S1474667016436128

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Remarks on the realization of time-varying systemsKotta, Ülle; Moog, Claude; Tõnso, MarisProceedings of the Estonian Academy of Sciences2018 / p. 208-216 http://www.kirj.ee/public/proceedings_pdf/2018/issue_3/proc-2018-3-207-216.pdf https://doi.org/10.3176/proc.2018.3.02 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Reordering derivatives of trace closures of regular languages [Online resource]Maarand, Hendrik; Uustalu, Tarmo30th International Conference on Concurrency Theory : (CONCUR 2019)2019 / art. 40 ; 40:1–40:16 https://doi.org/10.4230/LIPIcs.CONCUR.2019.40 Conference proceeding at Scopus Article at Scopus

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Simulation of two-rate hybrid control for nonlinear stochastic model of a diesel engine actuatorAstrov, IgorAdvances in electrical and computer engineering : journal of the Faculty of Electrical Engineering, Stefan Cel Mare University, Suceava, Romania2003 / 1(19), p. 72-83 https://aece.ro/abstractplus.php?year=2003&number=1&article=12

Single-experiment observability decomposition of discrete-time analytic systemsKawano, Yu; Kotta, ÜlleSystems & control letters2016 / p. 193-199 https://doi.org/10.1016/j.sysconle.2016.09.016 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Soliton ensembles and solitonic structuresEngelbrecht, Jüri; Salupere, AndrusApplicable analysis2012 / p. 237-250 : ill https://www.tandfonline.com/doi/full/10.1080/00036811.2011.608253

State feedback linearization of nonlinear control systems on homogeneous time scalesBartosiewicz, Zbigniew; Belikov, Juri; Kotta, Ülle; Wyrwas, MałgorzataNonlinear analysis: hybrid systems2019 / p. 69-85 https://doi.org/10.1016/j.nahs.2018.08.002 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

State-space control of nonlinear systems identified by ANARX and neural network based SANARX modelsVassiljeva, Kristina; Petlenkov, Eduard; Belikov, JuriThe 2010 International Joint Conference on Neural Networks (IJCNN) : 18-23 July 2010, Barcelona : proceedings2010 / p. 3816-3823 : ill https://ieeexplore.ieee.org/document/5596581

State-space realization of nonlinear control systems : unification and extension via pseudo-linear algebraBelikov, Juri; Kotta, Ülle; Tõnso, MarisKybernetika2012 / p. 1100-1113 https://www.researchgate.net/publication/269024076_State-space_realization_of_nonlinear_control_systems_Unification_and_extension_via_pseudo-linear_algebra

Static state feedback linearization of nonlinear control systems on homogeneous time scalesBartosiewicz, Zbigniew; Kotta, Ülle; Tõnso, Maris; Wyrwas, MałgorzataMathematics of control, signals, and systems2015 / p. 523-550 https://doi.org/10.1007/s00498-015-0150-5 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

A stochastic nonlinear excitation controller for transient stabilization in a power systemXu, Yan; Wen, Fushuan; Palu, Ivo; Yang, Zeng; Chen, Minghui; Zhao, Hongwei; Shang, Huiyu2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON), 7-9 October 2019 : conference proceedings2019 / 4 p. : ill https://doi.org/10.1109/RTUCON48111.2019.8982375

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Testing generic strong accessibility of nonlinear control systems via polynomial (quadratic) immersionCarravetta, Francesco; Sarafrazi, Mohammad Amin; Bartosiewicz, Zbigniew; Kotta, Ülle61st IEEE Conference on Decision and Control, CDC 2022, Cancun, 6 December - 9 December 2022, proceedings2022 / p. 1841-1846 https://doi.org/10.1109/CDC51059.2022.9992952 Conference Proceedings at Scopus Article at Scopus Article at WOS

The connection between different static state feedback linearizability conditions of discrete time nonlinear control systemsMullari, Tanel; Kotta, Ülle; Tõnso, MarisProceedings of the European Control Conference 2007, Kos, Greece, July 2-5, 20072007 / p. 4268−4275 http://ieeexplore.ieee.org/document/7068444/

The discrete control of two-rate nonlinear multivariable continuous-time systemsAstrov, Igor; Rüstern, EnnuProceedings of the Estonian Academy of Sciences. Physics. Mathematics1997 / 3, p. 197-208

Towards genetic algorithm based structure identification for minimal state-space representation and feedback control of nonlinear MIMO systemsVassiljeva, Kristina; Petlenkov, Eduard; Belikov, JuriInfo- ja kommunikatsioonitehnoloogia doktorikooli IKTDK neljanda aastakonverentsi artiklite kogumik : 26.-27. novembril 2010, Essu mõis2010 / lk. 11-14 : ill

Towards integrability for nonlinear time-delay systemsKaldmäe, Arvo; Moog, Claude H.; Califano, ClaudiaIFAC-Papers OnLine2015 / p. 900-905 https://doi.org/10.1016/j.ifacol.2015.09.305 Conference proceedings at Scopus Article at Scopus

Transfer functions of discrete-time nonlinear control systemsHalas, Miroslav; Kotta, ÜlleProceedings of the Estonian Academy of Sciences. Physics. Mathematics2007 / 4, p. 322-335

Transfer matrix and its Jacobson form for nonlinear systems on time scales : mathematica implementationBelikov, Juri; Kotta, Ülle; Leibak, AlarFull Papers : 18th International Conference on Process Control '11 : June 14-17, 2011, Tatransk Lomnica, Slovakia2011 / p. 141-146

Transformation of nonlinear discrete-time state equations into the observer form : extension to non-reversible caseMullari, Tanel; Kotta, ÜlleProceedings of the Estonian Academy of Sciences2021 / p. 235-247 https://doi.org/10.3176/proc.2021.3.03 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Transformation of nonlinear discrete-time state equations into the observer form : revisionMullari, Tanel; Kotta, ÜlleProceedings of the Estonian Academy of Sciences2023 / p. 1-5 https://doi.org/10.3176/proc.2023.1.01 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Transformation of nonlinear discrete-time system into the extended observer formKaparin, Vadim; Kotta, ÜlleInternational journal of control2018 / p. 848-858 https://doi.org/10.1080/00207179.2017.1294264 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Transformation of nonlinear state equations into observer form = Mittelineaarsete olekuvõrrandite olekutaastaja kujule teisendamineKaparin, Vadim2013 https://www.ester.ee/record=b2998616*est

Transformation of nonlinear state equations into the observer form : necessary and sufficient conditions in terms of one-formsKaparin, Vadim; Kotta, ÜlleKybernetika2015 / p. 36-58 http://dx.doi.org/10.14736/kyb-2015-1-0036

Transformation of the transfer matrix of the nonlinear system into the Jacobson formBelikov, Juri; Kotta, Ülle; Leibak, AlarProceedings of the 2010 IRAST International Congress on Computer Applications and Computational Science (CACS 2010) : 4-6 December 2010, Singapore2010 / p. 495-498

Translating a non-linearsystems theory model into accounting scienceKitzmann, HaraldКонтроллинг2006 / p. 20

Universal tool for solving different control problemsKotta, Ülle5th Junior European Meeting on Control & Information Technology : September 20-22, 2006, Tallinn, Estonia : book of abstracts2006 / p. 1

Weak reachability and controllability of discrete-time nonlinear systems: generic approach and singular pointsMullari, Tanel; Kotta, Ülle; Bartosiewicz, Zbigniew; Sarafrazi, Mohammad Amin; Moog, Claude; Pawluszewicz, EwaInternational journal of control2020 / p. 483-489 https://doi.org/10.1080/00207179.2018.1479076 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Исследование устойчивости нелинейной САУ второго порядкаTõnismägi, Svetlana; Täht, ToomasТеоретические и прикладные вопросы математики : тезисы докладов конференции, 26-27 сентября 1985 г. II1985 / с. 32 https://www.ester.ee/record=b1305194*est

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