Channel Signal-to-Noise Ratio Constrained Feedback Control: Performance and Robustness

Rojas, A.J. and Braslavsky, J.H. and Middleton, R.H. (2009) Channel Signal-to-Noise Ratio Constrained Feedback Control: Performance and Robustness. IET Control Theory and Applications, 2 (7). pp. 595-605. ISSN 1751-8644

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The limitations in performance and robustness imposed by explicitly considering a communication channel in a control loop have received increased attention in recent years. Previous results in the literature have stated these limitations in terms of a minimal transmission data rate necessary for stabilisation. In this paper a signal-to-noise ratio (SNR) approach is used to study two specific cases: (i) performance in terms of model matching and (ii) robustness against a multiplicative uncertainty in the plant model. The analysis performed leads to closed-form expressions that allow the quantification of the extra SNR required in both cases.

Item Type: Article
Additional Information: The original publication is available at
Keywords: Signal-to-noise ratio; SNR; Networks; Input-output stability; Performance; Robustness; Channel signal-to-noise ratio; Constrained feedback control; Communication channel; Control loop; Transmission data rate; Stabilisation; Model matching; Multiplicative uncertainty; Control system analysis; Feedback; Robust control; Telecommunication channels; Uncertain systems; Hamilton Institute.
Academic Unit: Faculty of Science and Engineering > Computer Science
Faculty of Science and Engineering > Research Institutes > Hamilton Institute
Item ID: 1880
Identification Number: /10.1049/iet-cta:20070246
Depositing User: Hamilton Editor
Date Deposited: 08 Mar 2010 13:22
Journal or Publication Title: IET Control Theory and Applications
Publisher: Institution of Engineering and Technology
Refereed: Yes

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