Sökning: "Wiener filter"

Visar resultat 11 - 15 av 18 avhandlingar innehållade orden Wiener filter.

1. 11. Studies on identification of time-variant and time-varying nonlinear systems

   Författare :Anders Nordsjö; KTH; []
   Nyckelord :;

   Sammanfattning : This thesis addresses same aspects of nonlinear systemidentification. In par ticular, it is assumed that theconsidered systems can be described by the Wiener model whichconsists of a dynamit linear part followed by a nonbnear partor the Haxnmerstein model in which the order of these twoblocks is reversed. LÄS MER

3. 12. Modeling, Model Validation and Uncertainty Identification for Power System Analysis

   Författare :Tetiana Bogodorova; Luigi Vanfretti; Konstantin Turitsyn; Francisco Gonzalez-Longatt; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Power system modelling; model validation; parameter identification; uncertainty identification; Modelica; Electrical Engineering; Elektro- och systemteknik;

   Sammanfattning : It is widely accepted that correct system modeling and identification are among the most important issues power system operators face when managing instability and post-contingency scenarios. The latter is usually performed involving special computational tools that allow the operator to forecast, prevent system failure and take appropriate actions according to protocols for different contingency cases in the system. LÄS MER

4. 13. Asymptotic Analysis of Hedging Errors Induced by Discrete Time Hedging

   Författare :Mats Brodén; Matematisk statistik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Discrete time hedging; discretization error; L2 convergence; Non-linear Kalman filters; Calibration;

   Sammanfattning : The first part of this thesis deals with approximations of stochastic integrals and discrete time hedging of derivative contracts; two closely related subjects. Paper A considers the problem of approximating the value of a Wiener process. LÄS MER

5. 14. Spatio-temporal filtering of ultrasound image sequences

   Författare :Nina Eriksson-Bylund; Linköpings universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : A number of diseases result in reduced perfusion of the vital organs of the body. Measures of the blood flow in the small vessels (the perfusion) of these organs would contribute significantly to a clinical diagnosis. Myocardial contrast echocardiography is a rapidly developing technique for non-invasive ultrasound imaging of perfusion. LÄS MER

7. 15. Modeling and control of vibration in mechanical structures

   Författare :Peter Nauclér; Torsten Söderström; Uppsala universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Elektroteknik med inriktning mot reglerteknik; Electrical Engineering with specialization in Automatic Control;

   Sammanfattning : All mechanical systems exhibit vibrational response when exposed to external disturbances. In many engineering applications vibrations are undesirable and may even have harmful effects. Therefore, control of mechanical vibration is an important topic and extensive research has been going on in the field over the years. LÄS MER