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ISSN 2511-6312
Effective heat transport systems in aerospace are based on multiphase loop heat pipes (LHPs). For a precise thermal control of the electronics, electrical heaters are additionally used to control the operating temperature of the LHP. This work focusses on the dynamical modeling and model-based control design for LHP-based heat transport systems. The results of this work can be used for the optimization of current control parameters and the efficient control design for future LHP applications.
Umfang: XLIV, 210 S.
Preis: 58.00 €
Buchdetails
In diesem Werk werden erstmals zeitdiskrete und zeitkontinuierliche Methoden präsentiert und analysiert, um flexible Solltrajektoriendarstellungen in Adaptive-Dynamic-Programming-Ansätze zu integrieren. Zudem werden theoretische Bedingungen an den Systemzustand hergeleitet, die eine zentrale Anregungseigenschaft für die Konvergenz der Adaption sicherstellen. Reale Anwendungen der vorgestellten adaptiven optimalen Trajektorienfolgeregelungsmethoden offenbaren das Potenzial dieser Ansätze.
In this work, discrete-time and continuous-time methods that integrate flexible reference trajectory representations into Adaptive Dynamic Programming approaches are presented and analyzed for the first time. Moreover, theoretical conditions on the system state are derived that ensure the persistent excitation property, which is crucial for the convergence of the adaptation. Real-world applications of the presented adaptive optimal trajectory tracking control methods reveal their potential.
Umfang: xxi, 213 S., LVII
Preis: 58.00 €
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The research reported in this thesis focuses on the decision making aspect of human-machine cooperation and reveals new insights from theoretical modeling to experimental evaluations: Two mathematical behavior models of two emancipated cooperation partners in a cooperative decision making process are introduced. The model-based automation designs are experimentally evaluated and thereby demonstrate their benefits compared to state-of-the-art approaches.
Umfang: xvii, 171 S., XLIX
Preis: 54.00 €
Buchdetails
This work presents a real-time dynamic pricing framework for future electricity markets. Deduced by first-principles analysis of physical, economic, and communication constraints within the power system, the proposed feedback control mechanism ensures both closed-loop system stability and economic efficiency at any given time. The resulting price signals are able to incentivize competitive market participants to eliminate spatio-temporal shortages in power supply quickly and purposively.
Umfang: LXXXVIII, 185 S.
Preis: 53.00 €
Buchdetails
Die Elektrifizierung und Automatisierung von Fahrzeugen fördern Innovationen der gesamten Fahrzeugarchitektur. Werden radselektiv gelenkte und angetriebene Fahrzeuge betrachtet, können Herausforderungen urbaner Regionen begegnet werden. Um diese Entwicklungen mit dem alternativen Fahrzeugkonzept zu kombinieren, wird ein optimales Fahrwerk gestaltet. Die Topologie-Optimierung einer virtuellen Radaufhängung erfolgt im Zusammenspiel mit einer durchgängigen, optimalen Fahrzeugführungsregelung.
The electrification and automation of passenger vehicles promote innovations of the entire vehicle architecture. If wheel-selective steered and driven vehicles are considered, challenges of urban regions can be met. In order to combine these development priorities with the alternative vehicle concept, an optimal suspension is designed for the vehicle concept. The topology optimization of a virtual wheel suspension takes place in interaction with a continuous, optimal dynamics vehicle control.
Umfang: LXVII, 167 S.
Preis: 59.00 €
Buchdetails
Für einen sicheren und effizienten Betrieb von Batteriezellen werden zunehmend modellbasierte Methoden eingesetzt. Zur Modellierung der Batteriezellen haben sich fraktionale Modelle, die durch nicht-ganzzahlige Ableitungsordnungen gekennzeichnet sind, aufgrund der elektrochemischen Interpretierbarkeit etabliert. In der Arbeit werden Verfahren zur Parameter- und Ableitungsordnungsidentifikation fraktionaler Systeme ohne Einschränkung bezüglich der Anregung zu Identifikationsbeginn hergeleitet.
Model-based methods are increasingly being used for a safe and efficient operation of battery cells. For modeling battery cells, fractional models which are characterized by non-integer derivative orders have become established due to their electrochemical interpretability. In this work, methods for parameter and derivative order identification of fractional systems are derived without restriction with respect to the excitation at the begin of identification.
Umfang: LXIV, 167 S.
Preis: 46.00 €
Buchdetails
This work addresses the automated generation of physical-based models and model-based observers. We develop port-Hamiltonian methods, which for the first time allow a complete and consistent automation of these two processes for a large class of interconnected systems.
Umfang: VIII, 225 S.
Preis: 49.00 €
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Bei der konventionellen Drehmomentregelung von permanentmagneterregten Synchronmaschinen werden Solldrehmomente unter der Berücksichtigung von Leistungsverlusten durch statische Kennfelder in Sollströme überführt. Dieses Vorgehen ist dynamisch suboptimal, interdependent und stark maschinenabhängig. Diese Arbeit widmet sich der Frage: Wie kann ein Model Predictive Controller entworfen werden, durch welchen die Ziele Drehmomenterreichung und Verlustminimierung simultan optimiert werden?
In classical approaches for the torque control of Permanent Magnet Synchronous Machines the torque references are converted into current references by static lookup tables which consider power losses. This procedure is dynamically suboptimal, interdependent and strongly machine-dependent. This work addresses the question: How can a Model Predictive Controller be designed to simultaneously optimize the objectives torque reference tracking and power loss minimization?
Umfang: LXIII, 164 S.
Preis: 51.00 €
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This work introduces a new specification and verification approach for dynamic systems. The introduced approach is able to provide type II error free results by definition, i.e. there are no hidden faults in the verification result. The approach is based on Kaucher interval arithmetic to enclose the measurement in a bounded error sense. The developed methods are proven mathematically to provide a reliable verification for a wide class of safety critical systems.
Umfang: LVII, 143 S.
Preis: 51.00 €
Buchdetails
This work addresses inverse dynamic games, which generalize the inverse problem of optimal control, and where the aim is to identify cost functions based on observed optimal trajectories. The identified cost functions can describe individual behavior in cooperative systems, e.g. human behavior in human-machine haptic shared control scenarios.
Umfang: LXXVII, 173 S.
Preis: 55.00 €
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