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Input-Output Stabil...
Input-Output Stability Analysis of Networked Control Systems
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- Nygren, Johannes, 1984- (författare)
- Uppsala universitet,Reglerteknik,Avdelningen för systemteknik
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- Pelckmans, Kristiaan (preses)
- Uppsala universitet,Institutionen för informationsteknologi
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- Glad, Torkel, Prof. (opponent)
- Dept. of Electrical Engineering, Linköping University
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(creator_code:org_t)
- ISBN 9789155494520
- Uppsala : Acta Universitatis Upsaliensis, 2016
- Engelska 147 s.
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Abstract
Ämnesord
Stäng
- 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). This work puts a particular focus on handling systems with a single integrator. This framework is elaborated in different specific directions as motivated by practical realizations of NCSs, as well as through numerical examples. A novel proof of the discrete time multivariate circle criterion and the Tsypkin criterion for systems including a single integrator is presented, as well as a stability criterion for linear systems with a single integrator subject to variable sampling periods and sector-bounded nonlinear feedback. Four stability criteria for different classes of systems subject to packet loss and time-varying delay are given. Stability criteria for a closed loop system switching between a set of linear time-invariant systems (LTIs) are proved. This result is applied to a single-link NCS with feedback subject to packet loss. Finally, necessary and sufficient conditions for delay-independent stability of an LTI system subject to nonlinear feedback are derived.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Reglerteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Control Engineering (hsv//eng)
Nyckelord
- Networked control systems
- L2-stability
- quantization
- delay
- packet dropouts
- switching systems
- Elektroteknik med inriktning mot reglerteknik
- Electrical Engineering with specialization in Automatic Control
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