| 1. |
- Almér, Stefan, et al.
(författare)
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Dynamic phasor analysis of a class of PWM systems
- 2015
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Ingår i: 2007 European Control Conference, ECC 2007. - : IEEE. - 9783952417386 ; , s. 1940-1947
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Konferensbidrag (refereegranskat)abstract
- The paper makes use of the so-called dynamic phasor model for stability and performance analysis of a class of PWM systems. The dynamic phasor model allows for the state to be represented in the frequency domain where a harmonic Lyapunov function is defined. The analysis covers both periodically switched systems and non-periodic systems where the switching is controlled by feedback.
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| 2. |
- Briat, C., et al.
(författare)
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The Conservation of Information, Towards an Axiomatized Modular Modeling Approach to Congestion Control
- 2015
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Ingår i: IEEE/ACM Transactions on Networking. - 1063-6692 .- 1558-2566. ; 23:3, s. 851-865
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Tidskriftsartikel (refereegranskat)abstract
- We derive a modular fluid-flow network congestion control model based on a law of fundamental nature in networks: the conservation of information. Network elements such as queues, users, and transmission channels and network performance indicators like sending/acknowledgment rates and delays are mathematically modeled by applying this law locally. Our contributions are twofold. First, we introduce a modular metamodel that is sufficiently generic to represent any network topology. The proposed model is composed of building blocks that implement mechanisms ignored by the existing ones, which can be recovered from exact reduction or approximation of this new model. Second, we provide a novel classification of previously proposed models in the literature and show that they are often not capable of capturing the transient behavior of the network precisely. Numerical results obtained from packet-level simulations demonstrate the accuracy of the proposed model.
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| 3. |
- Jönsson, Ulf T., et al.
(författare)
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Low dimensional stability criteria for large-scale interconnected systems
- 2015
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Ingår i: 2007 European Control Conference, ECC 2007. - : IEEE. - 9783952417386 ; , s. 2741-2747
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Konferensbidrag (refereegranskat)abstract
- A low complexity stability criterion for a class of large-scale systems is derived from a spectral characterization of the interconnection operator. The interconnection is modeled such that it is easy to account for delay and bandwidth constraints. The result is applied to a heterogeneous vehicle platoon and a class of circularly interconnected systems.
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| 4. |
- Megretski, A., et al.
(författare)
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Integral Quadratic Constraints
- 2018
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Ingår i: The Control Handbook. - : CRC Press. ; , s. 41-1-41-20, s. 1-20
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 5. |
- Möller, Anders, et al.
(författare)
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Stability of systems under interference feedback
- 2015
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Ingår i: 2009 European Control Conference, ECC 2009. - : IEEE. - 9783952417393 ; , s. 525-530
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Konferensbidrag (refereegranskat)abstract
- Distributed power control problems in wireless communications can be modeled as a highly nonlinear feedback system. The nonlinear coupling appear when a large number of mobile stations interact through interference and it is well known that this may lead to instabilities. In this paper a number of results on existence and uniqueness of solution and boundedness and convergence of the solution are derived for a higher order model class.
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