Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"Linear quadratic control"”.
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Linear quadratic control for systems with structured uncertainty
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1991.
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Gradient Methods for Large-Scale and Distributed Linear Quadratic Control
This thesis considers methods for synthesis of linear quadratic controllers for large-scale, interconnected systems. Conventional methods that solve the linear quadratic control problem are only applicable to systems with moderate size, due to the rapid increase in both computational time and …
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Linear Control and Estimation Using Operator Factorization
… prediction and smoothing problems as well as the linear quadratic control problems can very generally be formulated as operator equations using basic linear algebra. The equations are of Fredholm type II and difficult to solve directly. It is shown how the operator can be factorized into two …
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Distributed Parameter Control of Thermal Fluids
We consider the problem of controlling a thermal convection flow by feedback. The system is governed by the Boussinesq approximation of the coupled set of Navier-Stokes and heat equations. The control is applied through Dirichlet boundary conditions. We concentrate on a two-dimensional mode and use …
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Low-Rank Distributed Control with Application to Wind Energy
… operation. Most of the research is focused on controlling a wind farm that is required to meet a power set-point. In this mode of operation, the wind turbines are able to vary their power production as long as the total power demand is met. The research investigates how this freedom can be used …
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Preconditioning of Karush--Kuhn--Tucker Systems arising in Optimal Control Problems
… construction of preconditioners for indefinite linear systems. The systems under investigation arise in the numerical solution of quadratic programming problems, for example in the form of Karush--Kuhn--Tucker (KKT) optimality conditions or in interior--point methods. Therefore, the system …
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Learning and decentralized control in linear switched systems
… are an important and widely studied area of control theory since their applications can be encountered in many different circumstances. Examples of such systems include robotics, power grids, networked systems, and macroeconomic models. In this dissertation, we focus on the controller …
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Optimal nonlinear control and estimation using global domain linearization
… teaches that intelligence rests on feedback control. Thus, there are discrete symbols and continuous sensory-motor signals. Sensorimotor dynamics are well-represented by nonlinear differential equations. A possible construction of symbols could be based on equilibria. Language is a symbol …
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Flexible Embedded Control Systems : Design and Implementation
Embedded control system design is a complex and error prone task, and there is a great need for better development tools. Today most real-time control systems are static systems, designed in an ad-hoc fashion. A more interactive way of working would give shorter development times, reduced costs for …