Sökning: "sampled-data"

Visar resultat 1 - 5 av 48 avhandlingar innehållade ordet sampled-data.

1. 1. Performance and robust frequency response for multirate sampled-data systems

   Författare :Olof Lindgärde; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; sampled-data; multirate sampling; frequency analysis; servo performance; robust stability; performance; intersample behavior;

   Sammanfattning : .... LÄS MER

3. 2. Frequency Analysis of Sampled-Data Systems Applied to a Lime Slaking Process

   Författare :Olof Lindgärde; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; periodic systems; intersample behavior; sampled-data system; lime slaking; multirate sampling; frequency analysis; tank reactor; product inhibited; modeling;

   Sammanfattning : Single-rate and multirate sampled-data (SD) systems as well as linear time periodic (LTP) systems with discrete jumps are analyzed in the frequency domain. The focus of the analysis is both on rejection of disturbances and on robust stability properties. LÄS MER

4. 3. Spectral Analysis of Nonuniformly Sampled Data and Applications

   Författare :Prabhu Babu; Peter Stoica; Fredrik Gustafsson; Uppsala universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Spectral analysis; array processing; nonuniform sampling; sparse parameter estimation; direction of arrival DOA estimation; covariance fitting; sinusoidal parameter estimation; maximum-likelihood; non-parametric approach; exoplanet detection; radial velocity technique; Sudoku; Electrical Engineering with specialization in Signal Processing; Elektroteknik med inriktning mot signalbehandling;

   Sammanfattning : Signal acquisition, signal reconstruction and analysis of spectrum of the signal are the three most important steps in signal processing and they are found in almost all of the modern day hardware. In most of the signal processing hardware, the signal of interest is sampled at uniform intervals satisfying some conditions like Nyquist rate. LÄS MER

5. 4. A unified framework for mixed continuous/discrete-time H_infinity -control

   Författare :Anna-Karin Christiansson; Bengt Lennartson; Pertti Mäkillä; Högskolan Väst; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; H_inf-control; output feedback; Riccati equation; mixed continuous discrete-time systems; sampled-data; lifting; reduced controller order; loop-shaping; weight functions; Automatic control; Reglerteknik; Manufacturing and materials engineering; Produktions- och materialteknik;

   Sammanfattning : .... LÄS MER

7. 5. On LQG-Optimal Event-Based Sampling

   Författare :Marcus Thelander Andrén; Institutionen för reglerteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Event-based control; LQG control; sampled-data control; Stochastic control; Event-based PID control; Event-based state estimation; stochastic triggering;

   Sammanfattning : Event-based control is a promising concept for the design of resource-efficient feedback systems, where events such as sampling, actuation, and data transmissions are triggered reactively based on monitored control performance rather than a periodic timer. In this thesis, we investigate how sampling and communication events should be triggered to fully exploit the potential of event-based control based on the classic linear–quadratic–Gaussian (LQG) framework. LÄS MER