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Switched Control for Quantized Feedback Systems: Invariance and Limit Cycle Analysis
Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system. Politecn Milan, Milan, Italy.ORCID-id: 0000-0002-1364-8127
Politecn Milan, Milan, Italy.
Politecn Milan, Milan, Italy.
Politecn Milan, Milan, Italy.
2018 (Engelska)Ingår i: IEEE Transactions on Automatic Control, ISSN 0018-9286, E-ISSN 1558-2523, Vol. 63, nr 11, s. 3775-3786Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

We study feedback control for a discrete-time integrator with unitary delay in the presence of quantization both in the control action and in the measurement of the controlled variable. In some applications the quantization effects can be neglected, but when high precision is needed, they have to be explicitly accounted for in control design. In this paper, we propose a switched control solution for minimizing the effect of quantization of both the control and controlled variables for the considered system, that is quite common in the computing systems domain, for example, in thread scheduling, clock synchronization, and resource allocation. We show that the switched solution outperforms the one without switching, designed by neglecting quantization, and analyze necessary and sufficient conditions for the controlled system to exhibit periodic solutions in the presence of an additive constant disturbance affecting the control input. Simulation results provide evidence of the effectiveness of the approach.

Ort, förlag, år, upplaga, sidor
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC , 2018. Vol. 63, nr 11, s. 3775-3786
Nyckelord [en]
Computing system design, limit cycle, practical stability, quantized feedback control, switched control
Nationell ämneskategori
Datorsystem
Identifikatorer
URN: urn:nbn:se:mdh:diva-41301DOI: 10.1109/TAC.2018.2797246ISI: 000448499500011Scopus ID: 2-s2.0-85041005532OAI: oai:DiVA.org:mdh-41301DiVA, id: diva2:1261845
Tillgänglig från: 2018-11-08 Skapad: 2018-11-08 Senast uppdaterad: 2019-01-04Bibliografiskt granskad

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