Duala regulatorer
(1975) In MSc ThesesDepartment of Automatic Control
- Abstract
- Our task has been to compare the ability of three different regulators to control some single-input single-output systems with unknown parameters. The regulators were a minimal variance regulator, the Self-TUning REgulator STURE and an active suboptimally dual regulator. No simulations with the minimal variance regulator are shown since it turned out that it performs as STURE on systems with constant parameters and it does not work at all on systems with time-varying parameters (one time-delay). On systems with constant parameters STURE and the active sub-optimal regulator gave almost identical losses in stationarity (=the loss with a minimal variance regulator for known parameters), but it seems as if STURE converges quicker. These two... (More)
- Our task has been to compare the ability of three different regulators to control some single-input single-output systems with unknown parameters. The regulators were a minimal variance regulator, the Self-TUning REgulator STURE and an active suboptimally dual regulator. No simulations with the minimal variance regulator are shown since it turned out that it performs as STURE on systems with constant parameters and it does not work at all on systems with time-varying parameters (one time-delay). On systems with constant parameters STURE and the active sub-optimal regulator gave almost identical losses in stationarity (=the loss with a minimal variance regulator for known parameters), but it seems as if STURE converges quicker. These two regulators gave approximately the same loss also on systems with time-varying parameters except when the b-parameter, i.e. the gain, could change sign. In these cases the system became unstable when controlled by STURE, while the active suboptimal regulator managed to control. Our results seem to indicate that it is only if the gain may change sign that it pays to use a more complex regulator than STURE. (Less)
Please use this url to cite or link to this publication:
http://lup.lub.lu.se/student-papers/record/8850357
- author
- Abramowicz, Henrik and Stymne, Karl-Johan
- supervisor
- organization
- year
- 1975
- type
- H3 - Professional qualifications (4 Years - )
- subject
- publication/series
- MSc Theses
- report number
- TFRT-5159
- ISSN
- 0346-5500
- language
- Swedish
- id
- 8850357
- date added to LUP
- 2016-03-29 10:23:50
- date last changed
- 2016-03-29 10:23:50
@misc{8850357, abstract = {{Our task has been to compare the ability of three different regulators to control some single-input single-output systems with unknown parameters. The regulators were a minimal variance regulator, the Self-TUning REgulator STURE and an active suboptimally dual regulator. No simulations with the minimal variance regulator are shown since it turned out that it performs as STURE on systems with constant parameters and it does not work at all on systems with time-varying parameters (one time-delay). On systems with constant parameters STURE and the active sub-optimal regulator gave almost identical losses in stationarity (=the loss with a minimal variance regulator for known parameters), but it seems as if STURE converges quicker. These two regulators gave approximately the same loss also on systems with time-varying parameters except when the b-parameter, i.e. the gain, could change sign. In these cases the system became unstable when controlled by STURE, while the active suboptimal regulator managed to control. Our results seem to indicate that it is only if the gain may change sign that it pays to use a more complex regulator than STURE.}}, author = {{Abramowicz, Henrik and Stymne, Karl-Johan}}, issn = {{0346-5500}}, language = {{swe}}, note = {{Student Paper}}, series = {{MSc Theses}}, title = {{Duala regulatorer}}, year = {{1975}}, }