Sökning: "Hankel norm"

Visar resultat 1 - 5 av 9 avhandlingar innehållade orden Hankel norm.

1. 1. Rank Reduction with Convex Constraints

   Författare :Christian Grussler; Institutionen för reglerteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; low-rank approximation; model reduction; non-convex optimization; Douglas-Rachford; matrix completion; overlapping norm; k-support norm; atomic norm;

   Sammanfattning : This thesis addresses problems which require low-rank solutions under convex constraints. In particular, the focus lies on model reduction of positive systems, as well as finite dimensional optimization problems that are convex, apart from a low-rank constraint. LÄS MER

3. 2. Modelling of packed bed distillation column

   Författare :Anders Karlström; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; experimental validation; quality control; distributed parameter; Hankel norm; modelling; Distillation; model reduction; heat transfer; inferential measurements; least squares; momentum;

   Sammanfattning : .... LÄS MER

4. 3. On Nuclear Norm Minimization in System Identification

   Författare :Niclas Blomberg; Bo Wahlberg; Cristian Rojas; Kristiaan Pelckmans; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrical Engineering; Elektro- och systemteknik;

   Sammanfattning : In system identification we model dynamical systems from measured data. This data-driven approach to modelling is useful since many real-world systems are difficult to model with physical principles. Hence, a need for system identification arises in many applications involving simulation, prediction, and model-based control. LÄS MER

5. 4. On Model Simplification in System Identification

   Författare :Bo Wahlberg; Linköpings universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Model simplification; System identification;

   Sammanfattning : This report deals with the connection between system identification and model reduction. We propose an identification algorithm that is based on the least squares identification method and either of the model reduction techniques: Frequency weighted truncated balanced realization or frequency weighted optimal Hankel-norm model reduction. LÄS MER

7. 5. On some sparsity related problems and the randomized Kaczmarz algorithm

   Författare :Liang Dai; Kristiaan Pelckmans; Uppsala universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrical Engineering with specialization in Signal Processing; Elektroteknik med inriktning mot signalbehandling;

   Sammanfattning : This thesis studies several problems related to recovery and estimation. Specifically, these problems are about sparsity and low-rankness, and the randomized Kaczmarz algorithm. This thesis includes four papers referred to as Paper A, Paper B, Paper C, and Paper D. LÄS MER