| 1. |
- Åström, Karl Johan, et al.
(författare)
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A simple non-linear drum boiler model
- 1975
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Ingår i: International Journal of Control. - : Informa UK Limited. - 0020-7179 .- 1366-5820. ; 22:5, s. 739-740
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Tidskriftsartikel (refereegranskat)abstract
- This note gives an improved version of a previously published model for a drum boiler.
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| 2. |
- Åström, Karl Johan, et al.
(författare)
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A simplified non-linear model of a drum boiler - turbine unit
- 1972
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Ingår i: International Journal of Control. - : Informa UK Limited. - 0020-7179 .- 1366-5820. ; 16:1, s. 145-169
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Tidskriftsartikel (refereegranskat)abstract
- In the analysis of power systems it is highly desirable to have models of the different power generators. In this paper we present, a model for a drum boiler whose purpose is to describe the gross behaviour of the boiler. The major control variables are fuel flow and control valve setting. The output variables are drum pressure and active output power. The model is verified by experiments on a 160 Mw boiler.
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| 3. |
- Bellman, R., et al.
(författare)
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On Structural Identifiability
- 1970
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Ingår i: Mathematical Biosciences. - 0025-5564. ; 7, s. 329-339
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Tidskriftsartikel (refereegranskat)abstract
- In this article we introduce a new concept, structural identifiability, which plays a central role in identification problems. The concept is useful when answering questions such as: To what extent is it possible to get insight into the internal structure of a system from input-output measurements? What experiments are necessary in order to determine the internal couplings uniquely? The definition of the concept of an identifiable structure is given. Criteria as well as certain identifiable structures are discussed. Particular emphasis is given to compartmental models.
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| 4. |
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| 5. |
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| 6. |
- Källström, Claes, et al.
(författare)
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Adaptive Autopilots for Large Tankers
- 1978
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Ingår i: 7th Triennial World Congress of the IFAC : A Link Between Science and Applications of Automatic Control, Helsinki, Finland, 12-16 June - A Link Between Science and Applications of Automatic Control, Helsinki, Finland, 12-16 June. - 1474-6670. ; 11:1, s. 477-484
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Konferensbidrag (refereegranskat)abstract
- The adaptive autopilots are based on velocity scheduling, a self-tuning regulator for steady state course keeping, a high gain turning regulator with variable structure, and a Kalman filter. Results from simulations and full-scale experiments on three different tankers are presented. The autopilots are shown to work excellently under different loads, speed and weather conditions.
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| 7. |
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| 8. |
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| 9. |
- Källström, Claes G., et al.
(författare)
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Adaptive Autopilots for Tankers
- 1979
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Ingår i: Automatica. - : Elsevier BV. - 0005-1098. ; 15:3, s. 241-254
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Tidskriftsartikel (refereegranskat)abstract
- Two adaptive autopilots for ships are designed, The autopilots are based on velocity scheduling, a self-tuning regulator for steady state course keeping, a high gain turning regulator with variable structure and a Kalman filter.Methods for design of the autopilots are discussed. Results from simulations and full-scale experiments with three different tankers are presented. The autopilots are shown to work excellently under different load, speed, and weather conditions.
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| 10. |
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