Search for dissertations about: "feedback delay"

Showing result 1 - 5 of 86 swedish dissertations containing the words feedback delay.

2. 1. Quantized Feedback for Slow Fading Channels

   Author : Thanh Tùng Kim; Mikael Skoglund; Geir Øien; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fading channels; information rates; feedback communications; diversity methods; MIMO systems; power control; adaptive systems; quantization.; Telecommunication; Telekommunikation;

   Abstract : Two topics in fading channels with a strict delay constraint and a resolution-constrained feedback link are treated in this thesis. First, a multi-layer variable-rate single-antenna communication system with quantized feedback, where the expected rate is chosen as the performance measure, is studied under both short-term and long-term power constraints. READ MORE

4. 2. Hybrid observers for systems with intrinsic pulse-modulated feedback

   Author : Diana Yamalova; Alexander Medvedev; Xiaoming Hu; Uppsala universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; hybrid systems; impulsive systems; biomedical systems; Goodwin s oscillator; observers; time-delay; Elektroteknik med inriktning mot reglerteknik; Electrical Engineering with specialization in Automatic Control;

   Abstract : Dynamical processes resulting from the interaction of continuous and discrete dynamics are often encountered in living organisms. Time evolutions of such processes constitute continuous variables that are subject to instant changes at discrete points of time. READ MORE

5. 3. Input-Output Stability Analysis of Networked Control Systems

   Author : Johannes Nygren; Kristiaan Pelckmans; Torkel Glad; Uppsala universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Networked control systems; L2-stability; quantization; delay; packet dropouts; switching systems; Elektroteknik med inriktning mot reglerteknik; Electrical Engineering with specialization in Automatic Control;

   Abstract : The main focus of the thesis is to derive stability criteria for networked control system (NCS) models featuring imperfections such as time-varying and constant delays, quantization, packet dropouts, and non-uniform sampling intervals. The main method of proof is based on matrix algebra, as opposed to methods using Lyapunov functions or integral quadratic constraints (IQC). READ MORE

6. 4. Distributed Control of Electric Drive Systems via Ethernet

   Author : Lilantha Samaranayake; Chandur Sadarangani; Alexander Medvedev; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; adaptive sampling scheme; control delay; delay compensation; distributed control systems; Ethernet; Ethernet ready sensor actuator module; sampling period; Electrical engineering; Elektroteknik;

   Abstract : This thesis is on adapting standard Switched Ethernet for distributed control applications in electric drive systems. The critical issue of Ethernet here is to provide services to real-time applications. READ MORE

7. 5. Dialogue processes in computer-mediated communication : a study of letters in the COM system

   Author : Kerstin Severinson Eklundh; Linköpings universitet; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Dialogue; Discourse analysis; Feedback; Question strategies; Written communication; Computer-mediated communication; Message systems; COM system; INTERDISCIPLINARY RESEARCH AREAS; TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN;

   Abstract : This thesis concerns the basic communicative potentials of a new communications medium: computer-based communication systems. The computer medium has properties which makes it possible to carry out an interactive dialogue, although messages are written and there is a delay between successive contributions. READ MORE