Sökning: "linear-quadratic model"

Visar resultat 1 - 5 av 32 avhandlingar innehållade orden linear-quadratic model.

  1. 1. Gradient Methods for Large-Scale and Distributed Linear Quadratic Control

    Detta är en avhandling från Department of Automatic Control, Lund Institute of Technology, Lund University

    Författare :Karl Mårtensson; [2012]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Large-Scale Control; Distributed Control; Linear Quadratic Gaussian Control; Gradient method; Controller Synthesis;

    Sammanfattning : 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 memory requirements as the system size increases. LÄS MER

  2. 2. Modelling late toxicity in hypofractionated radiation therapy

    Detta är en avhandling från Department of Automatic Control, Lund Institute of Technology, Lund University

    Författare :Niclas Pettersson; Göteborgs universitet.; Gothenburg University.; [2013]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Hypofractionation; normal tissue complication probability; modelling; linear-quadratic model; fractionation sensitivity; late toxicity; radiation-induced rib fracture; genitourinary toxicity; stereotactic body radiation therapy; high-dose-rate brachytherapy; multimodality radiation therapy; patient-reported outcomes; prostate cancer; nsclc;

    Sammanfattning : In hypofractionated radiation therapy (RT), the treatment is delivered by few fractions with high doses per fraction. This is in contrast to conventionally fractionated RT where the total dose is delivered in many fractions with low doses per fraction. LÄS MER

  3. 3. Tools for Control System Design Stratification of Matrix Pairs and Periodic Riccati Differential Equation Solvers

    Detta är en avhandling från Umeå : Print & Media, Umeå universitet

    Författare :Stefan Johansson; Umeå universitet.; [2009]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; control system design; stratification; controllability; observability; matrix pair; canonical forms; linear quadratic regulator; periodic systems; periodic Riccati differential equation; TECHNOLOGY Information technology Computer science; TEKNIKVETENSKAP Informationsteknik Datavetenskap; Numerical Analysis; numerisk analys;

    Sammanfattning : Modern control theory is today an interdisciplinary area of research. Just as much as this can be problematic, it also provides a rich research environment where practice and theory meet. This Thesis is conducted in the borderline between computing science (numerical analysis) and applied control theory. LÄS MER

  4. 4. Reinforcement Learning and Distributed Local Model Synthesis

    Detta är en avhandling från Linköping : Linköping University Electronic Press

    Författare :Tomas Landelius; Hans Knutsson; Charles W. Anderson; [1997]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : Reinforcement learning is a general and powerful way to formulate complex learning problems and acquire good system behaviour. The goal of a reinforcement learning system is to maximize a long term sum of instantaneous rewards provided by a teacher. LÄS MER

  5. 5. Minimax Approaches to Robust Model Predictive Control

    Detta är en avhandling från Linköping : Linköping University Electronic Press

    Författare :Johan Löfberg; Torkel Glad; Lennart Ljung; [2003]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MPX; Minimax algorithms;

    Sammanfattning : Controlling a system with control and state constraints is one of the most important problems in control theory, but also one of the most challenging. Another important but just as demanding topic is robustness against uncertainties in a controlled system. LÄS MER