Sökning: "Observer"

Visar resultat 1 - 5 av 282 avhandlingar innehållade ordet Observer.

1. 1. Observer Design and Model Augmentation for Bias Compensation with Engine Applications

   Författare :Erik Höckerdal; Erik Frisk; Tomas McKelvey; Linköpings universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Estimation; observer; bias compensation; diesel engine; EKF; Automatic control; Reglerteknik;

   Sammanfattning : Control and diagnosis of complex systems demand accurate knowledge of certain quantities to be able to control the system efficiently and also to detect small errors. Physical sensors are expensive and some quantities are hard or even impossible to measure with physical sensors. This has made model-based estimation an attractive alternative. LÄS MER

3. 2. Online trajectory planning and observer based control

   Författare :David A. Anisi; Xiaoming Hu; Daizhan Cheng; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Computational Optimal Control; Receding Horizon Control; Mission Uncertainty; Safety; Task Completion; Consensus Problem; Simultaneous Arrival; Adaptive Grid Methods; Missile Guidance; Nonlinear Observer Design; Active Observers; Non--uniformly Observable Systems; Mobile Robotic Systems; Intrinsic Observers; Differential Geometric Methods; Euler-Lagrange Systems; Contraction Analysis.; Optimization; systems theory; Optimeringslära; systemteori;

   Sammanfattning : The main body of this thesis consists of four appended papers. The first two consider different aspects of the trajectory planning problem, while the last two deal with observer design for mobile robotic and Euler-Lagrange systems respectively. LÄS MER

4. 3. Induction Machine Speed Estimation - Observations on Observers

   Författare :Bo Peterson; Industriell elektroteknik och automation; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; control engineering; robotics; Automation; Elektronik och elektroteknik; Electronics and Electrical technology; estimation; sensorless control; observer; induction machine; Automatiska system; robotteknik; reglerteknik;

   Sammanfattning : This work focuses on observers estimating flux linkage and speed for induction machines, mainly in the low speed region. With speed estimation, sensorless control is possible, meaning that the speed of induction machines without mechanical speed sensors can be controlled. LÄS MER

5. 4. PoGOLite : The Polarised Gamma-ray Observer

   Författare :Cecilia Marini Bettolo; Mark Pearce; Christian Bohm; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; Fysik;

   Sammanfattning : PoGOLite is a balloon-borne experiment which will study polarised soft gamma-ray emission from astrophysical targets in the 25 keV – 80 keV energy range by applying well-type phoswich detector technology. Polarised gamma-rays are expected from a wide variety of sources including rotation-powered pulsars, accreting black holes and neutron stars, and jet-dominated active galaxies. LÄS MER

7. 5. Aux frontières de l’anthropocentrisme : la présence animale dans les romans de Michel Houellebecq

   Författare :Tony Thorström; Christina Kullberg; Roland Lysell; Uppsala universitet; []
   Nyckelord :HUMANIORA; HUMANITIES; Michel Houellebecq; Animals; Posthuman; Novel; Borders; Anthropocentrism; Subject; Metaphors; Descriptions; Observer; Science; History; Consumer; Product; Hierarchy; Romanska språk; Romance Languages;

   Sammanfattning : This dissertation sets out to explore the animal presence in the novels of contemporary French writer Michel Houellebecq. Focusing on this often overlooked aspect in the growing number of publications dedicated to Houellebecq’s literary production, this study argues that the presence of animals is central to understanding how his novels are structured around borders between not only animals and humans but also between humans themselves. LÄS MER