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Mimimalvariansstrategier med begränsad styrsignal

Folkesson, Christer (1973) In MSc Theses
Department of Automatic Control
Abstract
This paper deals with different methods for minimum variance control of linear, timeinvariable and sampled single-input single-output systems. Furthermore the amplitude of the control signal will be constrained. The most natural method is to make use of a minimum variance strategy, which minimizes the variance of the output signal. But this only when no saturation is applied. Saturation of the input signal will give disturbance to the strategy causing a worse result. In one method for investigation, the control law minimizes a loss-function also including the input variance. This method, however, seldom gives a better result than the ordinary minimum variance strategy. But there are methods, in some cases giving great improvements. One of... (More)
This paper deals with different methods for minimum variance control of linear, timeinvariable and sampled single-input single-output systems. Furthermore the amplitude of the control signal will be constrained. The most natural method is to make use of a minimum variance strategy, which minimizes the variance of the output signal. But this only when no saturation is applied. Saturation of the input signal will give disturbance to the strategy causing a worse result. In one method for investigation, the control law minimizes a loss-function also including the input variance. This method, however, seldom gives a better result than the ordinary minimum variance strategy. But there are methods, in some cases giving great improvements. One of these performs a one-step-minimizing of the output signal variance, under the condition of control signal amplitude being less than the saturation level. The same good result is obtained with a self-tuning regulator, making it possible for the parameters of the system to be unknown, but still constant. This condition is often realistic. (Less)
Please use this url to cite or link to this publication:
author
Folkesson, Christer
supervisor
organization
year
type
H3 - Professional qualifications (4 Years - )
subject
publication/series
MSc Theses
report number
TFRT-5130
ISSN
0346-5500
language
Swedish
id
8850516
date added to LUP
2016-03-29 15:56:14
date last changed
2016-03-29 15:56:14
@misc{8850516,
  abstract     = {This paper deals with different methods for minimum variance control of linear, timeinvariable and sampled single-input single-output systems. Furthermore the amplitude of the control signal will be constrained. The most natural method is to make use of a minimum variance strategy, which minimizes the variance of the output signal. But this only when no saturation is applied. Saturation of the input signal will give disturbance to the strategy causing a worse result. In one method for investigation, the control law minimizes a loss-function also including the input variance. This method, however, seldom gives a better result than the ordinary minimum variance strategy. But there are methods, in some cases giving great improvements. One of these performs a one-step-minimizing of the output signal variance, under the condition of control signal amplitude being less than the saturation level. The same good result is obtained with a self-tuning regulator, making it possible for the parameters of the system to be unknown, but still constant. This condition is often realistic.},
  author       = {Folkesson, Christer},
  issn         = {0346-5500},
  language     = {swe},
  note         = {Student Paper},
  series       = {MSc Theses},
  title        = {Mimimalvariansstrategier med begränsad styrsignal},
  year         = {1973},
}