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On some continuous-...
On some continuous-time modeling and estimation problems for control and communication
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- Irshad, Yasir, 1977- (författare)
- Karlstads universitet,Institutionen för ingenjörsvetenskap och fysik (from 2013)
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- Mossberg, Magnus, Docent (preses)
- Karlstads universitet,Institutionen för ingenjörsvetenskap och fysik (from 2013)
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- Jansson, Magnus, Professor (opponent)
- School of Electrical Engineering, KTH
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(creator_code:org_t)
- ISBN 9789170634826
- Karlstad : Karlstads universitet, 2013
- Engelska 208 s.
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Serie: Karlstad University Studies, 1403-8099 ; 2013:8
- Relaterad länk:
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Abstract
Ämnesord
Stäng
- The scope of the thesis is to estimate the parameters of continuous-time models used within control and communication from sampled data with high accuracy and in a computationally efficient way.In the thesis, continuous-time models of systems controlled in a networked environment, errors-in-variables systems, stochastic closed-loop systems, and wireless channels are considered. The parameters of a transfer function based model for the process in a networked control system are estimated by a covariance function based approach relying upon the second order statistical properties of input and output signals. Some other approaches for estimating the parameters of continuous-time models for processes in networked environments are also considered. The multiple input multiple output errors-in-variables problem is solved by means of a covariance matching algorithm. An analysis of a covariance matching method for single input single output errors-in-variables system identification is also presented. The parameters of continuous-time autoregressive exogenous models are estimated from closed-loop filtered data, where the controllers in the closed-loop are of proportional and proportional integral type, and where the closed-loop also contains a time-delay. A stochastic differential equation is derived for Jakes's wireless channel model, describing the dynamics of a scattered electric field with the moving receiver incorporating a Doppler shift.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Signalbehandling (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Signal Processing (hsv//eng)
Nyckelord
- System Identification
- Parameter Estimation
- Continuous-time Stochastic Systems
- Networked Control Systems
- Errors-in-variables Systems
- Wireless Channel Modeling
- Closed-loop Identification
- Physics
- Fysik
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