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- Olsson, Gustaf, et al.
(författare)
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A Model Library for Dynamic Simulation of Activated Sludge Systems
- 1985
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Ingår i: Instrumentation and Control of Water and Wastewater Treatment and Transport Systems : Proceedings of the 4th IAWPRC Workshop Held in Houston and Denver, U.S.A., 27 April – 4 May 1985 - Proceedings of the 4th IAWPRC Workshop Held in Houston and Denver, U.S.A., 27 April – 4 May 1985. - 9780080325910 ; , s. 721-728
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Bokkapitel (refereegranskat)abstract
- Research has been performed model the dynamics of different kinds of wastewater treatment systems. Plant models are built up from standard modules of subprocesses. Available model knowledge has been packaged into suitable software modules and a library of simulation models has been created. The paper describes this library and the kind of simulations that can be performed.
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- Olsson, Gustaf, et al.
(författare)
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An approach to air-fuel ratio control for automobile engines using self-tuning regulators
- 1981
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Ingår i: 20th IEEE Conference on Decision and Control including the Symposium on Adaptive Processes. ; , s. 1431-1437
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Konferensbidrag (refereegranskat)abstract
- A self-tuning algorithm is proposed for the control of the air-fuel ratio in internal combustion engines. Such a controller can overcome problems connected with unknown bias of the engine dynamics, slowly varying engine parameters and excess oxygen sensor characteristics. The simulation study has focused on near-steady-state situations and shows the feasibility of self-tuners in comparison with conventional PI controllers.
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- Olsson, Gustaf
(författare)
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Automatic Control in Wastewater Treatment Plants
- 1980
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Ingår i: La tribune du CEBEDEAU. - 0007-8115. ; 33:436, s. 121-130
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Tidskriftsartikel (refereegranskat)abstract
- Process dynamics and control in biological waste water treatment operations are considered. Particular emphasis has been put on the control of dissolved oxygen and its spatial distribution in activated sludge aerators. It is demonstrated how dissolved oxygen profiles can be used for the estimation of the biodegradable load. Aspects of the control of chemical precipitation are discussed as well.
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