Set-theoretic control of a wind turbine
| Autor: | Hure, Nikola |
|---|---|
| Přispěvatelé: | Vašak, Mario |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
skalabilnost
set-theoretic control methods discrete-time systems hybrid systems nonlinear systems constraints scalability invariant set operating envelope protection approximate constrained time-optimal control piecewise affine model identification one-step set computation one-step set appro-ximation clustering-based polyhedron over-approximation wind turbine unscented Kalman filter overspeed protection overload protection utility-scale wind turbine experiments aero-elastic simulations operating envelope protection Elektrotehnika udc:621.3(043.3) unscented Kalman filter aero-elastične simulacije vjetroagregata zaštita radne anvelope invariant set wind turbine ograničenja piecewise affine model identification aproksimacija jednokoračnog skupa clustering-based polyhedron overapproximation nadaproksimacija poliedra zasnovana na uskupljavanju eksperimentalna verifikacija na velikom vjetroagregatu one-step set approximation vjetroagregat scalability approximate constrained time-optimal control utility-scale wind turbine experiments identifikacija po dijelovima afinog modela metode upravljanja zasnovane na teoriji skupova izračun jednokoračnog skupa overspeed protection hybrid systems hibridni sustavi aero-elastic simulations vremenski diskretni sustavi overload protection nelinearni sustavi zaštita od preopterećenja one-step set computation nadbrzinska zaštita TECHNICAL SCIENCES. Electrical Engineering. Automation and Robotics discrete-time systems aproksimacija vremenski optimalnog upravljanja s ograničenjima Electrical engineering invarijantni skup nonlinear systems TEHNIČKE ZNANOSTI. Elektrotehnika. Automatizacija i robotika constraints nederivirajući Kalmanov filtar set-theoretic control methods |
| Popis: | This thesis discusses the set-theoretic methods for constrained control of high-order systems. Specifically, focus of the thesis is given on the operating envelope protection and constrained time-optimal control design in the algebra of polyhedral sets, whereas the utility-scale wind turbine is used to validate the proposed methods. Generally, set-theoretic control design for high-order systems suffers from the computational intractability which is related to the complexity of the specific operations between the sets. Algorithms that are proposed in this dissertation alleviate respective shortcomings. The developed set-theoretic methods are completely executed offline, whereas the computational cost for the on-line operation of the resulting control law is reduced to a minimum. Thus, a hard real-time claims can be posed, which is an important property for the technical systems with high safety requirements. Among the others, scientific contributions of the thesis include: approximate set-theoretic methods for application to high-order systems, method for the set-theoretic operating envelope protection design for a nonlinear process, real-time algorithm to derive a solution to the set of two-dimensional linear inequalities, algorithm for the wind turbine overspeed and the structure overload protection, method for the clustering-based identification of piecewise affine multiple-input multiple-output models and procedure for the wind turbine time-optimal controller design based on the identified piecewise affine model of the wind turbine. U disertaciji se razmatraju na skupovima zasnovane metode za upravljanje sustavima visokog reda s ograničenjima. Poseban naglasak disertacije je usmjeren na zaštitu radne anvelope i sintezu vremenski optimalnog upravljanje u algebri poliedarskih skupova, pri čemu je veliki vjetroagregat korišten za validaciju predloženih metoda. Generalno, sinteza sustava upravljanja zasnovana na teoriji skupova otežana je zbog računalne kompleksnosti metoda što je uzrokovano izvršavanjem određenih operacija među skupovima. Algoritmi koji su predloženi u ovoj disertaciji umanjuju spomenute probleme. Razvijene na skupovima zasnovane metode se u potpunosti izvode offline, pri čemu se potrebni računalni resursi za online obradu svode na minimum. Moguće je postaviti garancije za izvedivost algoritama u stvarnom vremenu što je od iznimne važnosti za tehničke sustave s visokim sigurnosnim zahtjevima. Međuostalim, znanstveni doprinosi disertacije uključuju: aproksimativne na skupovima zasnovane metode za primjenu na sustavima visokog reda, metoda za zaštitu radne anvelope nelinearnog procesa zasnovana na teoriji skupova, algoritam za pronalazak rješenja sustava dvodimenzionalnih linearnih nejednadžbi prikladan za izvođenje u stvarnom vremenu, algoritam za zaštitu vjetroagregata od prekoubrzanja i preopterećenja, metoda za identifikaciju po dijelovima afinog modela za sustave s više ulaza i više izlaza zasnovana na uskupljavanju i postupak za sintezu vremenski optimalnog regulatora vjetroagregata zasnovanog na identificiranom po dijelovima afinom modelu. |
| Databáze: | OpenAIRE |
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