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A transfer function approach to the realisation problem of nonlinear systemsHalas, Miroslav; Kotta, ÜlleInternational journal of control2012 / p. 320-331

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Accessibility conditions of MIMO nonlinear control systems on homogeneous time scalesBartosiewicz, Zbigniew; Kotta, Ülle; Tõnso, Maris; Wyrwas, MałgorzataMathematical control and related fields2016 / p. 217-250 https://doi.org/10.3934/mcrf.2016002

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Acessibility conditions for discrete time nonlinear multiinput multioutput systemsKotta, Ülle; Tõnso, Maris5th Junior European Meeting on Control & Information Technology : September 20-22, 2006, Tallinn, Estonia : book of abstracts2006 / p. 25

Adaptive controller for networked control systems subjected to random communication delaysSrinivasan, Seshadhri; Saravanakumar, G.; Subathra, B.; Kotta, ÜlleSoft computing applications : proceedings of the 7th International Workshop Soft Computing Applications (SOFA 2016). Vol. 12018 / p. 78-94 https://doi.org/10.1007/978-3-319-62521-8_8 Conference proceedings at Scopus Article at Scopus Article at WOS

Adaptive output feedback linearization for a class of NN-based ANARX modelsPetlenkov, Eduard; Nõmm, Sven; Kotta, Ülle5th Junior European Meeting on Control & Information Technology : September 20-22, 2006, Tallinn, Estonia : book of abstracts2006 / p. 10

Adaptive output feedback linearization for a class of NN-based ANARX modelsPetlenkov, Eduard; Nõmm, Sven; Kotta, ÜlleProceedings of the 6th IEEE International Conference on Control and Automation : Guangzhou, China, May 30 - June 1, 20072007 / p. 3173-3178 https://ieeexplore.ieee.org/document/4376947

Adjoint polynomial formulas for nonlinear state-space realizationBelikov, Juri; Kotta, Ülle; Tõnso, MarisIEEE transactions on automatic control2014 / p. 256-261

Advanced design of nonlinear discrete-time and delayed systems = Diskreetsete ja hilistumistega mittelineaarsete juhtimissüsteemide sünteesKaldmäe, Arvo2016 https://digi.lib.ttu.ee/i/?5215

Algebraic approach for analysis and control of a water tank systemBelikov, Juri; Kotta, Ülle; Tepljakov, AlekseiInformation technology and control2016 / p. 175-183 : ill http://dx.doi.org/10.5755/j01.itc.45.2.13212

Algebraic formalism of differential one-forms for nonlinear control systems on time scalesBartosiewicz, Zbigniew; Kotta, Ülle; Pawluszewicz, Ewa; Wyrwas, MałgorzataProceedings of the Estonian Academy of Sciences. Physics. Mathematics2007 / 3, p. 264-282

Algebraic formalism of differential p-forms and vector fields for nonlinear control systems on homogeneous time scalesBartosiewicz, Zbigniew; Kotta, Ülle; Pawluszewicz, Ewa; Tõnso, Maris; Wyrwas, MałgorzataProceedings of the Estonian Academy of Sciences2013 / p. 215-226

Any dynamical system is fully accessible through one singleactuator and related problemsKawano, Yu; Kotta, Ülle; Moog, ClaudeInternational journal of robust and nonlinear control2016 / p. 1748-1754 http://dx.doi.org/10.1002/rnc.3379

A brief tutorial overview of disturbance observers for nonlinear systems : application to flatness-based controlKaldmäe, Arvo; Kotta, ÜlleProceedings of the Estonian Academy of Sciences2020 / p. 57-73 : ill https://doi.org/10.3176/proc.2020.1.07 http://www.kirj.ee/33035/?tpl=1061&c_tpl=1064 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Challenges and perspectives in control of ionic polymer-metal composite (IPMC) actuators : a surveyAabloo, Alvo; Belikov, Juri; Kaparin, Vadim; Kotta, ÜlleIEEE Access2021 / art. 9133056, p. 121059-121073 https://doi.org/10.1109/ACCESS.2020.3007020 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Comments on 'A new kind of nonlinear disturbance observer for nonlinear systemswith applications to cruise control of air-breathing hypersonic vehicles'Kaldmäe, Arvo; Kotta, ÜlleInternational journal of control2020 / p. 1725 https://doi.org/10.1080/00207179.2018.1529436 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Comments on "PBH tests for nonlinear systems"Sarafrazi, Mohammad Amin; Bartosiewicz, Zbigniew; Kotta, ÜlleAutomatica2020 / art. 108617 https://doi.org/10.1016/j.automatica.2019.108617 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Comparison of LPV and nonlinear system theory : a realization problemBelikov, Juri; Kotta, Ülle; Tõnso, MarisSystems & control letters2014 / p. 72-78

Computer algebra tools for modelling, analysis and synthesis for nonlinear control systems = Arvutialgebra vahendid mittelineaarsete juhtimissüsteemide modelleerimiseks, analüüsiks ja sünteesiksTõnso, Maris2010 https://www.ester.ee/record=b2552427*est

Construction of flat outputs of nonlinear discrete-time systems in a geometric and an algebraic frameworkKolar, Bernd; Kaldmäe, Arvo; Schöberl, Markus; Kotta, Ülle; Schlacher, KurtIFAC-PapersOnLine2016 / p. 796-801 https://doi.org/10.1016/j.ifacol.2016.10.263

Controller and controllability canonical forms for discrete-time nonlinear systemsKotta, ÜlleProceedings of the Estonian Academy of Sciences. Physics. Mathematics2005 / 1, p. 55-62

Decomposition of discrete-time nonlinear control systemsKotta, ÜlleProceedings of the Estonian Academy of Sciences. Physics. Mathematics2005 / 3, p. 154-161

Degree of Dieudonne determinant defines the order of nonlinear systemKotta, Ülle; Belikov, Juri; Halas, Miroslav; Leibak, AlarInternational journal of control2019 / p. 518-527 https://doi.org/10.1080/00207179.2017.1361042 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Discrete- time linear- analytic system linearization and decoupling via application of right inverse systemKotta, ÜlleEesti NSV Teaduste Akadeemia toimetised. Füüsika. Matemaatika = Известия Академии наук Эстонской ССР. Физика. Математика = Proceedings of Academy of Sciences of the Estonian SSR. Physics. Mathematics1988 / lk. 257-262 https://www.ester.ee/record=b1264310*est

Disturbance decoupling by measurement feedback : sensor locationKaldmäe, Arvo; Kotta, Ülle; Shumsky, Alexey; Zhirabok, AlexeyProceedings of the Estonian Academy of Sciences2016 / p. 317-329 : ill http://dx.doi.org/10.3176/proc.2016.4.05

Disturbance decoupling in nonlinear hybrid systemsKaldmäe, Arvo; Kotta, Ülle; Shumsky, Alexey; Zhirabok, AlexeyNonlinear analysis : hybrid systems2018 / p. 42-53 https://doi.org/10.1016/j.nahs.2017.11.001 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Disturbance decoupling in nonlinear hybrid systems [Electronic resource]Kaldmäe, Arvo; Kotta, Ülle; Shumsky, Alexey; Zhirabok, Alexey12th IEEE International Conference on Control and Automation : ICCA 2016 : Kathmandu, Nepal, 1-3 June 20162016 / p. 86-91 : ill. [USB] https://doi.org/10.1109/ICCA.2016.7505257

Disturbance decoupling of multi-input multi-output discrete-time nonlinear systems by static measurement feedbackKaldmäe, Arvo; Kotta, ÜlleProceedings of the Estonian Academy of Sciences2012 / p. 77-88 https://artiklid.elnet.ee/record=b2497319*est

Disturbance decoupling problem in finite automata : sensor location problemKaldmäe, Arvo; Kotta, Ülle; Shumsky, Alexey; Zhirabok, Alexey2016 IEEE Conference on Control Applications (CCA) : part of 2016 IEEE Multi-Conference on Systems and Control, September 19-22, 2016, Buenos Aires, Argentina2016 / p. 481-486 : ill https://doi.org/10.1109/CCA.2016.7587876

Eesti Vabariigi 2018. aasta teaduspreemia laureaadid TTÜstVähi, Kersti; Buldas, Ahto; Kotta, Ülle; Kurnitski, Jarek; Raudla, RingaMente et Manu2018 / lk. 26-27 : portr https://www.ttu.ee/ttu-uudised/ajaleht-mente-et-manu/mente-et-manu/ http://www.ester.ee/record=b1242496*est

Equivalence of linear control systems on time scalesBartosiewicz, Zbigniew; Kotta, Ülle; Pawluszewicz, EwaProceedings of the Estonian Academy of Sciences. Physics. Mathematics2006 / 1, p. 43-52

Equivalence of realizability conditions for nonlinear control systemsKotta, Ülle; Mullari, TanelProceedings of the Estonian Academy of Sciences. Physics. Mathematics2006 / 1, p. 24-42

Erratum : Linearization of discrete-time control system by state transformationMullari, Tanel; Kotta, ÜlleProceedings of the Estonian Academy of Sciences2021 / p. 307 https://doi.org/10.3176/proc.2021.1.09 https://kirj.ee/wp-content/plugins/kirj/pub/Erratum-proc-3-2021-307_20210822154030.pdf

Event-based control for differentially flat systems: application to autonomous underwater vehicleKaldmäe, Arvo; Kotta, Ülle; Meurer, Christian; Simha, AshutoshIFAC-PapersOnLine2019 / p. 180-185 https://doi.org/10.1016/j.ifacol.2019.11.775 Conference proceedings at Scopus Article at Scopus Article at WOS

Experimental validation of the Newton observer for a nonlinear flux-controlled AMB system operated with zero-bias fluxMystkowski, Arkadiusz; Kierdelewicz, A.; Kotta, Ülle; Kaparin, VadimInternational journal of control2020 / p. 2257-2266 : ill https://doi.org/10.1080/00207179.2018.1552025 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Extended observer form : simple existence conditionsKaparin, Vadim; Kotta, Ülle; Mullari, TanelInternational journal of control2013 / p. 794-803 : ill

Faulty plant reconfiguration based on disturbance decoupling methodsKaldmäe, Arvo; Kotta, Ülle; Jiang, Bin; Shumsky, Alexey Ye.; Zhirabok, Alexey N.Asian journal of control2016 / p. 858-867 : ill http://dx.doi.org/10.1002/asjc.1185

Feedback linearization and lattice theoryKotta, Ülle; Tõnso, Maris; Shumsky, Alexey Ye.; Zhirabok, Alexey N.Systems & control letters2013 / p. 248-255

Feedback linearization of an active magnetic bearing system operated with a zero-bias fluxMystkowski, Arkadiusz; Kaparin, Vadim; Kotta, Ülle; Pawluszewicz, Ewa; Tõnso, MarisInternational journal of applied mathematics and computer science2017 / p. 539-548 : ill https://doi.org/10.1515/amcs-2017-0038

Feedback linearization of discrete-time nonlinear control systems : computational aspectsMullari, Tanel; Kotta, ÜlleProceedings of the Estonian Academy of Sciences2020 / p. 11-26 https://doi.org/10.3176/proc.2020.1.03 http://kirj.ee/32996/?tpl=1061&c_tpl=1064 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Feedback linearization of possibly non-smooth systemsKaldmäe, Arvo; Kotta, Ülle; Shumsky, Alexey; Zhirabok, AlexeyProceedings of the Estonian Academy of Sciences2017 / p. 109-123 https://doi.org/10.3176/proc.2017.2.01 http://www.ester.ee/record=b2355998*est

Finite determination of accessibility and singular points of nonlinear systems: an algebraic approachSarafrazi, Mohammad Amin; Kotta, Ülle; Bartosiewicz, ZbigniewSystems & control letters2020 / art. 104600, p. 1−7 https://doi.org/10.1016/j.sysconle.2019.104600 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

A flapped paddle-fin for improving underwater propulsive efficiency of oscillatory actuationSimha, Ashutosh; Gkliva, Roza; Kotta, Ülle; Kruusmaa, MaarjaIEEE robotics and automation letters2020 / p. 3176-3181 https://doi.org/10.1109/LRA.2020.2975747 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Flatness based control of a HVAC systemKaldmäe, Arvo; Kotta, ÜlleInformation technology and control2017 / p. 499-507 : ill http://dx.doi.org/10.5755/j01.itc.46.4.17697

FLHex: a flapped-paddle hexapod for all-terrain amphibious locomotionBurzynski, Piotr; Simha, Ashutosh; Kotta, Ülle; Pawluszewicz, Ewa; Sastry, ShivakumarBulletin of the Polish Academy of Sciences Technical Sciences2021 / art. e139007, 9 p. : ill https://doi.org/10.24425/bpasts.2021.139007 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Forward and backward shifts of vector fields : towards the dual algebraic frameworkMullari, Tanel; Kotta, Ülle; Bartosiewicz, Zbigniew; Pawluszewicz, Ewa; Moog, ClaudeIEEE transactions on automatic control2017 / p. 3029-3033 https://doi.org/10.1109/TAC.2016.2608718

Functions' algebra in nonlinear control : computational aspects and softwareBelikov, Juri; Kaldmäe, Arvo; Kaparin, Vadim; Kotta, Ülle; Shumsky, Alexey Ye.; Tõnso, Maris; Zhirabok, AlexeyProceedings of the Estonian Academy of Sciences2017 / p. 89-107 https://doi.org/10.3176/proc.2017.1.06 http://www.ester.ee/record=b2355998*est

A geometric approach to position tracking control of a nonholonomic planar rigid body : case study of an underwater vehicleSimha, Ashutosh; Kotta, ÜlleProceedings of the Estonian Academy of Sciences2020 / p. 215-227 : ill https://doi.org/10.3176/proc.2020.3.05 https://kirj.ee/public/proceedings_pdf/2020/issue_3/proc-2020-3-215-227.pdf Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Global linearization approach to nonlinear control systems : a brief tutorial overviewBelikov, Juri; Kaldmäe, Arvo; Kotta, ÜlleProceedings of the Estonian Academy of Sciences2017 / p. 243-263 https://doi.org/10.3176/proc.2017.3.01 http://www.ester.ee/record=b2355998*est

Infoleht / [TTÜ] Küberneetika InstituutPenjam, Jaan; Kotta, Ülle; Kutser, Mati; Lemba, Maris; Tamm, Marje2001

Input-output decoupling of discrete-time nonlinear systems by dynamic measurement feedbackKaldmäe, Arvo; Kotta, ÜlleEuropean journal of control2017 / p. 31-38 : ill https://doi.org/10.1016/j.ejcon.2016.12.004

Input–output linearization of discrete-time systems by dynamic output feedbackKaldmäe, Arvo; Kotta, ÜlleEuropean journal of control2014 / p. 73-78

Institute of Cybernetics at TTU : activity report 1997-1999Kotta, Ülle2000

Institute of Cybernetics at TUT : activity report 2000-20032004 https://www.ester.ee/record=b1928118*est

Intrinsic conditions for extended observer forms for nonlinear systemsSimha, Ashutosh; Respondek, Witold; Kaldmäe, Arvo; Kaparin, Vadim; Kotta, Ülle2018 IEEE Conference on Decision and Control (CDC), 17-19 Dec. 2018, 17-19 Dec. 2018 : proceedings2018 / p. 1373-1378 https://doi.org/10.1109/CDC.2018.8619122 Conference Proceedings at Scopus Article at Scopus Article at WOS

Kahe doktorikraadi omanik Sven Nõmm : [intervjuu TTÜ ja Nantes'i Ülikooli doktoriga]Nõmm, Sven; Kotta, ÜlleTallinna Tehnikaülikooli aastaraamat 20042005 / lk. 123-124

Learning based personalized energy management systems for residential buildingsSoudari, Mallikarjun; Srinivasan, Seshadhri; Balasubramanian, Subathra; Vain, Jüri; Kotta, ÜlleEnergy and buildings2016 / p. 953-968 : ill http://dx.doi.org/10.1016/j.enbuild.2016.05.059

Lineaarse mitmedimensionaalse dünaamilise süsteemi identifitseerimine sisend-väljundandmete põhjalKotta, Ülle350 aastat matemaatikat Tartu Ülikoolis = 350 лет математики в Тартуском университете : ettekannete teesid1982 / lk. 82-85 https://www.ester.ee/record=b1255795*est

A linear filtering framework for nonlinear systems based on extended output injectionSimha, Ashutosh; Kotta, ÜlleIFAC-PapersOnLine2019 / p. 274-279 https://doi.org/10.1016/j.ifacol.2019.11.791 Conference proceedings at Scopus Article at Scopus Article at WOS

Linearization by generalized input-output injections on homogeneous time scalesCiulkin, Monika; Pawluszewicz, Ewa; Kaparin, Vadim; Kotta, Ülle2016 21st International Conference on Methods and Models in Automation and
Robotics (MMAR 2016) : Miedzyzdroje, Poland, 29 August - 1 September 20162016 / p. 48-53 https://doi.org/10.1109/MMAR.2016.7575086

Linearization by input-output injections on homogeneous time scalesCiulkin, Monika; Kaparin, Vadim; Kotta, Ülle; Pawluszewicz, EwaProceedings of the Estonian Academy of Sciences2014 / p. 387-397 https://artiklid.elnet.ee/record=b2707375*est

Linearization of discrete-time control system by state transformationMullari, Tanel; Kotta, ÜlleProceedings of the Estonian Academy of Sciences2021 / p. 62–79 https://doi.org/10.3176/proc.2021.1.09 https://kirj.ee/wp-content/plugins/kirj/pub/proc-1-2021-62-79_20210630094644.pdf?v=a57b8491d1d8 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

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

Measurement feedback disturbance decoupling in discrete-time nonlinear systemsKaldmäe, Arvo; Kotta, Ülle; Shumsky, Alexey Ye.; Zhirabok, Alexey N.Automatica2013 / p. 2887-2891 : ill

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 / 7 p https://doi.org/10.1109/TAC.2023.3240124

Mittelineaarsed juhtimissusteemidKotta, ÜlleAastaraamat 2018 / Eesti Matemaatika Selts2022 / lk. 9-21 https://matemaatika.eu/aastaraamatud/aastaraamat-2018/

Model matching problem for discrete-time nonlinear systemsBelikov, Juri; Halas, Miroslav; Kotta, Ülle; Moog, ClaudeProceedings of the Estonian Academy of Sciences2015 / p. 457-472 : ill

Motor failure tolerant control system with self diagnostics for unmanned multirotorsAmbroziak, Leszek; Simha, Ashutosh; Pawluszewicz, Ewa; Kotta, Ülle2019 24th International Conference on Methods and Models in Automation and Robotics (MMAR)2019 / p. 422–427 : ill https://doi.org/10.1109/MMAR.2019.8864726

Nabla derivatives associated with nonlinear control systems on homogeneous time scalesBartosiewicz, Zbigniew; Kotta, Ülle; Mullari, Tanel; Tõnso, Maris; Pawluszewicz, Ewa; Wyrwas, MałgorzataNonlinear analysis : modelling and control2016 / p. 547-563 http://dx.doi.org/10.15388/NA.2016.4.8

Neural networks based ANARX structure for identification and model based controlPetlenkov, Eduard; Nõmm, Sven; Kotta, Ülle9th International Conference on Control, Automation, Robotics and Vision : 5-8 December, 2006, Singapore : [proceedings]2006 / p. 2284-2288 https://ieeexplore.ieee.org/document/4150221

Newton observer for a nonlinear flux-controlled AMB systemMystkowski, Arkadiusz; Kotta, Ülle; Kaparin, VadimProceedings of the Estonian Academy of Sciences2018 / p. 61-72 : ill https://doi.org/10.3176/proc.2018.1.03 http://www.ester.ee/record=b2355998*est Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

NLControl - a mathematica package for nonlinear control systemsKotta, Ülle; Tõnso, MarisIFAC-PapersOnLine2017 / p. 681-686 https://doi.org/10.1016/j.ifacol.2017.08.122

Non-commutative determinants in nonlinear control theory : preliminary ideasKotta, Ülle; Leibak, Alar; Halas, MiroslavICARCV 2008 : 10th International Conference on Control, Automation, Robotics & Vision : 17-20 December 2008, Hanoi, Vietnam2008 / p. 815-820

Nonlinear orientation controller for a compliant robotic fish based on asymmetric actuationMeurer, Christian; Simha, Ashutosh; Kotta, Ülle; Kruusmaa, Maarja2019 International Conference on Robotics and Automation : ICRA 2019, Palais des Congres de Montreal, Canada, 20-24 May, 20192019 / Art. 8793892 ; p. 4688-4694 https://doi.org/10.1109/ICRA.2019.8793892 Conference proceeding at Scopus Article at Scopus Article at WOS

Observable space of the nonlinear control system on a homogeneous time scaleKaparin, Vadim; Kotta, Ülle; Wyrwas, MałgorzataProceedings of the Estonian Academy of Sciences2014 / p. 11-25 https://artiklid.elnet.ee/record=b2665198*est

Observer-based residual generation for nonlinear discrete-time systemsKaldmäe, Arvo; Kotta, ÜlleProceedings of the Estonian Academy of Sciences2018 / p. 325-336 http://www.kirj.ee/public/proceedings_pdf/2018/issue_4/proc-2018-4-325-336.pdf https://doi.org/10.3176/proc.2018.4.01 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Oluline sündmus : [juuni algul kaitses Sven Nõmm Tallinna Tehnikaülikoolis loodusteaduste doktori kraadi, talle omistati ka Nantes'i ülikooli doktorikraad ühise kraadiõppe programmi raames]Kotta, ÜllePostimees2004 / lk. 12

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 http://dx.doi.org/10.1016/j.sysconle.2016.09.018

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

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

On the differentiation of a composite function with a generalized vector argument on homogeneous time scalesKaparin, Vadim; Kotta, ÜlleProceedings of the Estonian Academy of Sciences2017 / p. 309-322 : tab https://doi.org/10.3176/proc.2017.3.04 http://www.ester.ee/record=b2355998*est

On the finiteness of accessibility test for nonlinear discrete-time systemsSarafrazi, Mohammad Amin; Pawluszewicz, Ewa; Bartosiewicz, Zbigniew; Kotta, ÜlleInternational journal of control2021 / p. 2330-2336 https://doi.org/10.1080/00207179.2019.1706102 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

On the properties of forward and backward shifts of vector fieldsKaldmäe, Arvo; Kaparin, Vadim; Kotta, Ülle; Mullari, Tanel; Pawluszewicz, EwaProceedings of the Estonian Academy of Sciences2022 / p. 314-325 https://doi.org/10.3176/proc.2022.4.02 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

On the stopping criteria in nonlinear unknown input observability conditionSarafrazi, Mohammad Amin; Kotta, Ülle; Bartosiewicz, ZbigniewIEEE transactions on automatic control2022 / p. 4733-4737 https://doi.org/10.1109/TAC.2022.3160133 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

On the transformation of a nonlinear discrete-time input-output system into the strong row-reduced formBartosiewicz, Zbigniew; Belikov, Juri; Kotta, Ülle; Tõnso, Maris; Wyrwas, MałgorzataProceedings of the Estonian Academy of Sciences2016 / p. 220-236 http://dx.doi.org/10.3176/proc.2016.3.02

Polynomial accessibility condition for the multi-input multi-output nonlinear control systemKotta, Ülle; Tõnso, Maris; Kawano, YuProceedings of the Estonian Academy of Sciences2014 / p. 136-150 https://artiklid.elnet.ee/record=b2673962*est

Popov form and the explicit equations of inverse systemsBartosiewicz, Zbigniew; Kotta, Ülle; Pawluszewicz, Ewa; Tõnso, Maris; Wyrwas, MałgorzataProceedings of the Estonian Academy of Sciences2018 / p. 432-355 : ill http://www.kirj.ee/public/proceedings_pdf/2018/issue_4/proc-2018-4-342-355.pdf https://doi.org/10.3176/proc.2018.4.04 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

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

Realisation of linear time-varying systemsKotta, Ülle; Tõnso, MarisInternational journal of control2017 / p. 1951-1956 https://doi.org/10.1080/00207179.2016.1230891

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

Realization and identification of discrete-time nonlinear systemsNõmm, Sven2004 https://www.ester.ee/record=b1910554*est

Realization of discrete-time nonlinear input-output equations : polynomial approachKotta, Ülle; Tõnso, MarisAutomatica2012 / p. 255-262 https://www.sciencedirect.com/science/article/pii/S0005109811005413

Realization of nonlinear input-output equations in controller canonical formKaldmäe, Arvo; Kotta, ÜlleKybernetika2018 / p. 736-747 https://doi.org/10.14736/kyb-2018-4-0736 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Realization of nonlinear input-output equations using polynomial approach : preliminary ideasKotta, Ülle; Tõnso, MarisInfo- ja kommunikatsioonitehnoloogia doktorikooli IKTDK kolmanda aastakonverentsi artiklite kogumik : 25.-26. aprill 2008, Voore külalistemaja2008 / p. 21-24

Realization of nonlinear MIMO system on homogeneous time scalesBelikov, Juri; Kotta, Ülle; Tõnso, MarisEuropean journal of control2015 / p. 48-54 http://dx.doi.org/10.1016/j.ejcon.2015.01.006

Realization of nonlinear time-delay input–output equationsKaldmäe, Arvo; Kotta, Ülle; Tõnso, MarisIEEE Control Systems Letters2018 / p. 369-374 https://doi.org/10.1109/LCSYS.2018.2838456 Journal metrics at Scopus Article at Scopus

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

Rekursiivsed juhtimissüsteemid : Eesti Teadusfondi projekt aastatel 1999-2002Kotta, Ülle; Nõmm, SvenEesti Teadusfondi Aastaraamat 2002/20032003 / lk. 23 : ill. (Tehnikateadused)

Relaxing realizability conditions for discrete-time nonlinear systemsKotta, Ülle; Schlahter, Kurt; Tõnso, MarisAutomatica2015 / p. 67-71 http://dx.doi.org/10.1016/j.automatica.2015.05.007

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

Removing the input derivatives in the generalized bilinear state equationsMullari, Tanel; Kotta, Ülle; Kotta, Palle; Tõnso, Maris; Zinober, AlanProceedings of the Estonian Academy of Sciences2009 / 2, p. 98-107 https://citeseerx.ist.psu.edu/document?repid=rep1&type=pdf&doi=b053956e3600449843044b1022ebefc6d5d19df8

Silmad kinni ja näpud püsti! Kellest saab doktorant? : [kavandatavaid seadusemuudatusi õppetoetuste ja õppelaenu osas kommenteerivad TTÜ kõnetehnoloogia doktorant Tanel Alumäe, infotehnoloogia doktorant Juhan-Peep Ernits ja Küberneetikainstituudi vanemteadur Ülle Kotta]Lill, Anne; Alumäe, Tanel; Ernits, Juhan-Peep; Kotta, ÜlleLinnaleht2004 / 3. dets., lk. A 7

Single-experiment observability decomposition of discrete-time analytic systemsKawano, Yu; Kotta, ÜlleSystems & control letters2016 / p. 193-199 http://dx.doi.org/10.1016/j.sysconle.2016.09.016

State estimation and control for small low-cost autonomous underwater vehicles = Meetodid olekute hindamiseks ja juhtimiseks soodsa hinnaga autonoomsetele allveerobotiteleMeurer, Christian2021 https://www.ester.ee/record=b5435482*est https://digikogu.taltech.ee/et/Item/717111f2-51e3-4176-b0b8-b369064b26a2 https://doi.org/10.23658/taltech.27/2021

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 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 linearizability : relationship between two methodsMullari, Tanel; Kotta, Ülle; Tõnso, MarisProceedings of the Estonian Academy of Sciences2011 / 2, p. 121-135 https://artiklid.elnet.ee/record=b2413961*est

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 http://dx.doi.org/10.1007/s00498-015-0150-5

Teadlane peab julgema eksida : [Ülle Kotta : TTÜ küberneetika instituudi teadur, kes 1996. aastal pälvis pika teadurikarjääri tunnustusena Eesti Vabariigi teaduspreemia]Helme, Kristi; Kotta, ÜlleMente et Manu2013 / lk. 6-8 : fot

A test for the generic strong-accessibility of meromorphic nonlinear systemsCarravetta, Francesco; Sarafrazi, Mohammad Amin; Bartosiewicz, Zbigniew; Kotta, ÜlleIEEE transactions on automatic control2020 / p. 867-873 https://doi.org/10.1109/TAC.2019.2921645 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

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 concepts of Lie derivative for discrete-time systemsMullari, Tanel; Kotta, Ülle; Bartosiewicz, Zbigniew; Pawluszewicz, EwaProceedings of the Estonian Academy of Sciences2012 / p. 253-265 : ill

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 strong Popov form of nonlinear input–output equationsBartosiewicz, Zbigniew; Pawluszewicz, Ewa; Wyrwas, Małgorzata; Kotta, Ülle; Tõnso, MarisProceedings of the Estonian Academy of Sciences2018 / p. 193–206 https://doi.org/10.3176/proc.2018.3.01 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Theorem on the differentiation of a composite function with a vector argumentKaparin, Vadim; Kotta, ÜlleProceedings of the Estonian Academy of Sciences2010 / 3, p. 195-200 https://artiklid.elnet.ee/record=b2163022*est

Tracking control of nonlinear pneumatic actuator systems using static state feedback linearization of the input-output mapWang, Jihong; Kotta, Ülle; Ke, JiaProceedings of the Estonian Academy of Sciences. Physics. Mathematics2007 / 1, p. 47-66 : ill

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

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 MIMO discrete-time systems into the extended observer formKaparin, Vadim; Kotta, ÜlleAsian journal of control2019 / p. 2208–2217 : ill https://doi.org/10.1002/asjc.1824 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

Täppisteaduste valdkonna aastapreemia tööde tsükli "Algebralised meetodid matemaatilises juhtimisteoorias" eest : Ülle Kotta. Algebralised meetodid matemaatilises juhtimisteooriasKotta, ÜlleEesti Vabariigi preemiad 2018 : teadus. F. J. Wiedemanni keeleauhind. Kultuur. Sport2018 / lk. 76-89 : portr

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

WebMathematica-based tools for discrete-time nonlinear control systemsTõnso, Maris; Rennik, Heli; Kotta, ÜlleProceedings of the Estonian Academy of Sciences2009 / 4, p. 224-240

Автоматизированное проектирование многомерных линейных систем управленияOit, Monika; Pajupuu, J.; Härmaorg, T.; Jaaksoo, Ülo; Kotta, Ülle; Nurges, ÜloVIII Всесоюзное совещание по проблемам управления : Таллин, октябрь 1980 : тезисы докладов. Книга 31980 / с. 597-600 https://www.ester.ee/record=b1275375*est

Идентификация многомерных линейных стационарных динамических систем : автореферат ... кандидата технических наук (05.13.01)Kotta, Ülle1980 https://www.ester.ee/record=b3545499*est

Управление дискретными обратимыми справа нелинейными системами : автореферат ... доктора физико-математических наукKotta, Ülle1992 https://www.ester.ee/record=b1164884*est

Частичная декомпозируемость многомерных системKotta, ÜlleEesti NSV Teaduste Akadeemia toimetised. Füüsika. Matemaatika = Известия Академии наук Эстонской ССР. Физика. Математика = Proceedings of Academy of Sciences of the Estonian SSR. Physics. Mathematics1987 / lk. 30-35 https://www.ester.ee/record=b1264310*est