Decentralized design of interconnected H infinity feedback control systems with quantized signals

Zhai, G. ; Chen, N. ; Gui, W.

International Journal of Applied Mathematics and Computer Science, Tome 23 (2013) no. 2, pp. 317-325.

Résumé

In this paper, we consider the design of interconnected H infinity feedback control systems with quantized signals. We assume that a decentralized dynamic output feedback has been designed for an interconnected continuous-time LTI system so that the closed-loop system is stable and a desired H infinity disturbance attenuation level is achieved, and that the subsystem measurement outputs are quantized before they are passed to the local controllers. We propose a local-output-dependent strategy for updating the parameters of the quantizers, so that the overall closed-loop system is asymptotically stable and achieves the same H infinity disturbance attenuation level. Both the pre-designed controllers and the parameters of the quantizers are constructed in a decentralized manner, depending on local measurement outputs.

Détail

Keywords: interconnected systems, decentralized H infinity control, dynamic output feedback, quantizer, quantization, matrix inequality, LMI
Mots-clés : sprzężenie zwrotne dynamiczne, kwantyzer, kwantowanie, nierówność macierzowa, metoda LMI

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