| 1. |
- Lincoln, Bo, et al.
(författare)
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Efficient Pruning of Search Trees in LQR Control of Switched Linear Systems
- 2000
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Ingår i: Proceedings of the 39th IEEE Conference on Decision and Control, 2000.. - 0780366387 ; 2, s. 1828-1832
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- This paper considers off-line optimization of a switching sequence fora given finite set of linear control systems and joint optimization ofcontrol laws. A linear quadratic full information criterion isoptimized and dynamic programming is used to find the optimalswitching sequence and control laws. The main result is a method for efficient pruning of the search tree to avoid combinatoric explosion.A method to prove optimality of a found candidate switch sequence and corresponding control laws is presented.
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| 2. |
- Lincoln, Bo, et al.
(författare)
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LQR Optimization of Linear System Switching
- 2002
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Ingår i: IEEE Transactions on Automatic Control. - 0018-9286. ; 47:10, s. 1701-1705
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Tidskriftsartikel (refereegranskat)abstract
- This paper considers off-line optimization of a switching sequence fora given finite set of linear control systems, together with joint optimization ofcontrol laws. A linear quadratic full information criterion isoptimized and dynamic programming is used to find an optimalswitching sequence and control law. The main result is a method forefficient pruning of the search tree to avoid combinatoric explosion.A method to prove optimality of a found candidate switch sequence andcorresponding control laws is presented.
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| 3. |
- Lincoln, Bo, et al.
(författare)
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Optimal Control over Networks with Long Random Delays
- 2000
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Ingår i: Proceedings CD of the Fourteenth International Symposium on Mathematical Theory of Networks and Systems.
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- This paper studies the effects of stochastic time delays on automatic control systems which uses communication networks. We assume a linear process to be controlled and known delay probability distributions.The contribution of this paper is to extend the theory in(Nilsson 1998) to delays that may be longer than one sample period.Using a quadratic cost we find the optimal full-state-information controller. We also show that the standard Kalman filter is an optimal observer, and that the separation principle holds.
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| 4. |
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| 5. |
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| 6. |
- Alriksson, Peter, et al.
(författare)
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Automatic Gain Control In WCDMA Terminals
- 2004
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- This article gives a presentation of the Automatic Gain Control algorithm used in WCDMA (3rd generation mobile networks). The focus is on how the controller bandwidth influences settling times and modulation distortion. This will be investigated through simulation for two different channel cases.
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| 7. |
- Baison, John, et al.
(författare)
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Genome-Wide Association Study (GWAS) identified novel candidate loci affecting wood formation in Norway spruce
- 2019
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Ingår i: The Plant Journal. - : Wiley. - 0960-7412 .- 1365-313X. ; 100:1, s. 83-100
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Tidskriftsartikel (refereegranskat)abstract
- Norway spruce is a boreal forest tree species of significant ecological and economic importance. Hence there is a strong imperative to dissect the genetics underlying important wood quality traits in the species. We performed a functional Genome-Wide Association Study (GWAS) of 17 wood traits in Norway spruce using 178101 single-nucleotide polymorphisms (SNPs) generated from exome genotyping of 517 mother trees. The wood traits were defined using functional modelling of wood properties across annual growth rings.We applied a LASSO based association mapping method using a functional multi-locus mapping approach that utilizes latent traits, with a stability selection probability method as the hypothesis testing approach to determine significant Quantitative Trait Loci (QTLs). The analysis provided 52 significant SNPs from 39 candidate genes, including genes previously implicated in wood formation and tree growth in spruce and other species. Our study represents a multi-locus GWAS for complex wood traits in Norway spruce. The results advance our understanding of the genetics influencing wood traits and identifies candidate genes for future functional studies.
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| 8. |
- Baison, John, et al.
(författare)
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Genome-wide association study identified novel candidate loci affecting wood formation in Norway spruce
- 2019
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Ingår i: The Plant Journal. - : John Wiley & Sons. - 0960-7412 .- 1365-313X. ; 100:1, s. 83-100
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Tidskriftsartikel (refereegranskat)abstract
- Norway spruce is a boreal forest tree species of significant ecological and economic importance. Hence there is a strong imperative to dissect the genetics underlying important wood quality traits in the species. We performed a functional genome-wide association study (GWAS) of 17 wood traits in Norway spruce using 178 101 single nucleotide polymorphisms (SNPs) generated from exome genotyping of 517 mother trees. The wood traits were defined using functional modelling of wood properties across annual growth rings. We applied a Least Absolute Shrinkage and Selection Operator (LASSO-based) association mapping method using a functional multilocus mapping approach that utilizes latent traits, with a stability selection probability method as the hypothesis testing approach to determine a significant quantitative trait locus. The analysis provided 52 significant SNPs from 39 candidate genes, including genes previously implicated in wood formation and tree growth in spruce and other species. Our study represents a multilocus GWAS for complex wood traits in Norway spruce. The results advance our understanding of the genetics influencing wood traits and identifies candidate genes for future functional studies.
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| 9. |
- Bernhardsson, Bo, et al.
(författare)
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A Load Model Structure for Analysis and Control of Electric Distribution Network
- 1999
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Ingår i: IFAC Proceedings Volumes. ; 32:2, s. 6148-6153
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Tidskriftsartikel (refereegranskat)abstract
- Power electronics result in increased harmonic distortion, but can also be used for harmonic mitigation. This requires simple, low order models for nonlinear networks. The Harmonic Norton Equivalent is a load model structure that supports aggregation of nonlinear loads, and makes nonlinear network solving (i.e. simulation) a non-iterative procedure. It is a linearized description of the relation between voltage spectrum and current spectrum. A procedure for obtaining the Equivalents from measurements is presented and shows good agreement with the validation data.
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| 10. |
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